J
WI RI NG DI AGRAM S— —Y — YJ VEHI CLES
8W - 1 - 1
WIRING DIAGRAMS CONTENTS
page
pa ge
8W- 01 GE 8W-01 GENE NERA RAL L INFO I NFORMA RMATION— TION—WI WIRING RING DIAG DIA GRA RAMS MS . . . . . . . . . . . . . . . . . . . . . . 8W-01-1 8W-10 FU FUSE SE/FUS /FUSE E BLO BLOC CK . . . . . . . . . . . 8W-10-1 8W-11 PO POWE WER R DISTRIB DISTRIBUT UTION ION . . . . . . . . 8W-11-1 8W-15 GRO ROUN UND D DISTRIB DISTRIBUT UTION ION . . . . . . . 8W-15-1 8W-20 CHA HARG RGING ING SYS SYSTE TEM M . . . . . . . . . . 8W-20-1 8W-21 ST STA ART RTING ING SYST SYSTE EM . . . . . . . . . . . 8W-21-1 8W-30 FUE FUEL/IG L/IGNIT NITIO ION N . . . . . . . . . . . . . . 8W-30-1 8W-31 TRA TRANSMISSIO NSMISSION N CONTR CONTRO OLS . . . . 8W-31-1 8W-32 ANT NTI-LO I-LOC CK BRA BRAK KES . . . . . . . . . . 8W-32-1 8W-40 INST INSTRU RUMEN MENT T CLU CLUST STE ER . . . . . . . 8W-40-1 8W-41 HO HORN RN/CIG /CIGA AR LIGHTE LIGHTER R . . . . . . . . 8W-41-1
8W-42 AIR CONDITIO NDITIONING NING/HE /HEA ATE TER R .... 8W-44 INT I NTE ERIO RIOR R LIGHT LIGHTING ING . . . . . . . . . . 8W-47 AUDIO AUDIO SYS SYSTE TEM M .............. 8W-48 HE HEA ATE TED D REA REAR WINDO WI NDOW W ....... 8W-50 FRO FRONT LIG LIGHT HTING ING . . . . . . . . . . . . 8W-51 REA REAR LIGHT LIGHTING ING . . . . . . . . . . . . . 8W-52 TURN TURN SIGNA SIGNALS LS . . . . . . . . . . . . . . 8W-53 8W -53 WIPERS WIPERS . . . . . . . . . . . . . . . . . . . . 8W-70 SP SPLIC LICE E INFO INFORMA RMATIO TION N . . .. . . .. 8W-80 CONN NNE ECTO TOR R PIN OUTS OUTS . . . . . . . 8W-90 CONNE NNEC CTO TOR R LOCA LOCATION TIONS S ...... 8W-95 SP SPLIC LICE E LOC LOCATIO TIONS NS . . . . . . . . . . .
8W-42-1 8W-44-1 8W-47-1 8W-48-1 8W-50-1 8W-51-1 8W-52-1 8W-53-1 8W-70-1 8W-80-1 8W-90-1 8W-95-1
HOW TO USE THIS GROUP
SECTION IDENTIFICATION
The purpose of this group is to show the electrical circuits in a clear, simple fashion and to make troublesho bl eshoo oting easie easier. r. Components Components tha t wo work rk tog together ether are shown together. All electrical components used in a specific system are shown on one diagram. The feed for a s ys ys t em em is s h ow ow n a t t h e t op op of t h e p a ge ge . Al All wires, connectors, splices, and components are shown in the flow of current to the bottom of the page. Wiring which is not part of the circuit represented is referenced erenc ed to a nother page/ page/sec sectio tion, n, where the comple mplete te circ ircuit uit is show shown. n. In additi additio on, all swi switches tches,, components, and modules are shown in the at r est po sit i o n w i t h t h e d o o rs rs c l o s e d a n d t h e k e y r e m o v e d from the ignition. If a component is part of several different circuits, it is shown in the diagram for each. For example, the h e a dl dla m p s wi wit ch ch is t h e m a in in p a r t of t h e e xt xt e r io ior lighting, but it also affects the interior lighting and the chime warning system. It is important to realize that no attempt is m a d e o n t h e d i a g r a m s t o r e p re re s e n t c o m p o n e n t s and wiring as they appear on the vehicle. For e x a m pl p l e , a s h o rt rt p i ec e c e o f w i re r e i s t r e a te te d t h e same as a long one. In addition, switches and other components are shown as simply as possible, with regard to function only. T h e w ir ir i n g d ia ia g r a m s h ow ow ci r cu cu i t s for a l l w h e el el bases. If th ere is a dif diffferenc erencee in sys systems tems or compon e n t s b et et w ee ee n w h e el el -b -b a s es es , a n i de de n t if ifi er er i s p la la ce ce d next to the component.
S e ct ct i on on s i n G r ou ou p 8 W a r e or g a n iz iz ed ed b y s u b -s -s ys ys tems. The sec sections tions conta conta in circuit operation descriptions, tio ns, helpf helpful ul inf info ormat io ion, n, and syste system m diag diagrams. rams. The intention intentio n is to organize informat informat io ion n by system, consistently from year to year.
CONNECTOR LOCATIONS Section Sec tion 8W 8W--90 co conta nta ins Co Conn nn ec ector tor Lo Locatio cation n il illuslust r a t io ion s . T h e i ll llu s t r a t io ion s con t a in i n t h e con n e ct ct or or number and component identification. Connector Location charts in Section 8W-90 reference the illustration number for components and connectors. Sectio Sec tion n 8W 8W--80 show showss eac each h connecto nnectorr and the circuits invo involv lved ed wi with th that connecto nnector. r. The connecto nnectors rs a r e id en en t if i fie d u s in in g t h e n u m b er er on t h e D ia ia g ra ra m pages.
SPLICE LOCATIONS Splic Spl icee Lo Loccatio ation n chart s in Sec Sectio tion n 8W 8W--70 sho show w the entire splice, and provide references to other sections the splice serves. Section 8W-95 contains illustrations that show the general gene ral lo loccatio ation n of the spli splicces in eac each h harn ess. The illustrations show the splice by number, and provide a written location.
J
8W- 10 FUSE/ FUSE BLOCK— YJ YJ VEHI CLES
8W - 10 - 1
FUSE/FUSE BLOCK GENERAL INFORMATION This sectio section cove vers rs the Fuse Blo Blocck and all circui circuits ts involv invo lved ed with it. F or additi additio onal inf info ormat io ion n on sys sys-tem operation, refer to the appropriate section of the wiring wiri ng diag diagrams. rams.
DIAGRAM INDEX Component Page Circu ircuit it Bre rea ake kerr (F (Fus use e Block Block Ca Cavity 11) . . . . . . . . . . .8W-10-8 Comb mbin ina atio tion n Buz Buzzer . . . . . . . . . . . . . . . . . . . . . . .8W-10-6 Fuse 1 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . . .8W-10-9 Fuse 3 (PD (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-10-4 Fuse 3 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . . .8W-10-5 Fuse 4 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . .8W-10-6, 8 Fuse 4 (PD (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-10-8 Fuse 5 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . . .8W-10-6 Fuse 6 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . . .8W-10-5 Fuse 7 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . . .8W-10-8 Fuse 8 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . . .8W-10-4
Component Page Fuse 9 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . . .8W-10-6 Fuse 10 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . .8W-10-5 Fuse 12 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . .8W-10-9 Fuse 13 13 (PD (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-10-9 Fuse Blo Bloc ck . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-10-3 Gauge Pa Package . . . . . . . . . . . . . . . . . . . . . . . .8 .8W W-10-5, 7 Headlamp Switch . . . . . . . . . . . . . . . . . . . . . . . . .8W-10-4 Ign Ig nit itio ion n Sw Swit itc ch . . . . . . . . . . . . . . . . . . . . . . . .8W-10-6, 8 Ins In stru trum ment Clu lus ste terr . . . . . . . . . . . . . . . . . . . . . .8W .8W-10-5, -10-5, 7 Panel Lamp Dimmer Switch . . . . . . . . . . . . . . . . . .8W-10-5
J
8W-11 POWER DISTRIBUTION— YJ VEHICLES
8W - 11 - 1
POWER DISTRIBUTION GENERAL INFORMATION This section covers the Power Distribution Center (PDC) and all circuits involved with it. For additional informat ion on system operation refer to th e a ppropriate section of the wiring diagrams.
DIAGRAM INDEX Component Page A/C Compressor Clutch Relay . . . . . . . . . . . . . .8W-11-3, 10 ABS Pump Motor Relay . . . . . . . . . . . . . . . . . .8W-11-3, 9 ABS Control Module . . . . . . . . . . . . . . . . . . . . .8W-11-8, 9 ABS Power Relay . . . . . . . . . . . . . . . . . . . . . .8W-11-3, 8 Automatic Shut Down Relay . . . . . . . . . . . . . . . .8W-11-3, 6 Engine Starter Motor Relay . . . . . . . . . . . . . . . .8W-11-3, 4 Fuel Pump Relay . . . . . . . . . . . . . . . . . . . . . . .8W-11-3, 6 Fuse 1 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-11-8 Fuse 1 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-6 Fuse 2 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-7 Fuse 3 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-7 Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . .8W-11-4, 8, 10 Fuse 5 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-11-6 Fuse 5 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-7
Component Page Fuse 6 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-7 Fuse 7 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-7 Fuse 8 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-5 Fuse 9 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . .8W-11-10 Fuse 9 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-9 Fuse 10 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-8 Fuse 11 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-5 Fuse 12 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . .8W-11-8 Fuse 12 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-5 Headlamp Switch . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-7 Horn Relay . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-11-3, 5 Ignition Switch . . . . . . . . . . . . . . . . . . . . . .8W-11-4, 8, 10 Power Distribution Center . . . . . . . . . . . . . . . . . . .8W-11-2 Powertrain Control Module . . . . . . . . . . . . . .8W-11-4, 6, 10
8W-15 GROUND DISTRIBUTION— YJ VEHICLES
J
8W - 15 - 1
GROUND DISTRIBUTION GENERAL INFORMATION T h is s e ct i on i de n t ifi es t h e g r ou n d s , s p li ce s t h a t con n e ct t o t h os e g r ou n d s , a n d t h e com p on e n t s t h a t connect those grounds. For additional information on system operation, refer to t he appropriate section of the wiring diagrams. For an illustration of the physical locat ion of each ground, refer to group 8W-90.
DIAGRAM INDEX Component G101 . . . G102 . . . G103 . . . G104 . . . G105 . . . G106 . . . G107 . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
Page . .8W-15-2 . .8W-15-2 . .8W-15-2 . .8W-15-3 . .8W-15-3 . .8W-15-4 . .8W-15-4
Component G108 . . . S104 . . . S106 . . . S112 . . . S119 . . . S122 . . . S125 . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
Page . .8W-15-4 . .8W-15-2 . .8W-15-2 . .8W-15-3 . .8W-15-3 . .8W-15-3 . .8W-15-4
J
8W-20 CHARGING SYSTEM— YJ VEHICLES
8W - 20 - 1
CHARGING SYSTEM CHARGING SYSTEM The charging system is an integral part of the battery and starting systems. Because all these systems work in conjunction, diagnose and test them together. Circuit A11 connects to the generator output terminal and splices to fuse 2 and fuse 6 in the Power Dist r ib u t ion C en t e r (P D C). C ir cu it A0 con n e ct s t h e battery to the PDC. Circuit Z0 provides ground for the generator. Circuit Z0 attaches to the right side rear of the engine. When the ignition switch is in either the START or RUN position, it connects circuit A1 from fuse 4 in the PDC to circuit A21. Circuit A21 powers fuse 5 in t h e fu s e b lock . C ir cu i t G 50 fr om fu s e 5 s p li ce s t o p ow er t h e coil s id e of t h e Au t om a t ic S h u t D ow n (ASD) relay. Th e P owertr ain Cont rol Module (PCM) provides ground for the relay on circuit K51. Circuit K51 connects to cavity 51 of the PCM. When the PCM grounds the ASD relay, contacts inside the relay close and connect circuit A14 from fuse 1 in the PDC to circuit A142. Circuit A142 splices to the generator field terminal. T h e P C M h a s a n in t e r n a l v olt a ge r e gu la t or t h a t controls generator output. The PCM controls the generator field on circuit K20. Circuit K20 connects to PCM cavity 20.
When the engine operates and there is current in the generator field, the generator produces a B+ voltage. The generator supplies B+ voltage to the battery through the A11 and A0 circuits.
HELPFUL INFORMATION The ignition switch also connects circuit A1 with circuits A41, A22, and A31. • Circuit A21 also powers fuse 9 in the fuse block. G50 also powers the coil sides of th e fuel • Circuit pump relay and the torque convertor clutch (TCC) relay. • The ASD relay supplies battery voltage for the fuel injectors, ignition coil, and the heated oxygen sensor. K51 a lso provides ground for the coil side • Circuit of the fuel pump relay. •
DIAGRAM INDEX Component Battery . . . . . . . Fuse 2 (PDC) . . . Fuse 6 (PDC) . . . Generator . . . . . . Powertrain Control
.... ..... ..... ..... .... ... ... ... ... ... ... ... .. ... ... ... ... ... ... ... .. ...... ...... ...... ..... Module (PCM) . . . . . . . . . . . . .
Page .8W-20-2 .8W-20-2 .8W-20-2 .8W-20-2 .8W-20-2
J
8W-21 STARTING SYSTEM— YJ VEHICLES
8W - 21 - 1
STARTING SYSTEM STARTING SYSTEM AUTOMATIC TRANSMISSIONS C ir cu i t A 0 fr om t h e b a t t e r y i s d ou b le cr i m p ed a t t h e p os it i ve b a t t e r y p os t . O n e b r a n ch of ci r cu i t A0 (battery positive cable) connects to the engine starter motor. The other A0 branch supplies voltage to the bus bar in the Power Distribution Center (PDC). T h e P D C s u p plie s b a t t er y volt a ge t o t h e e n gin e start er motor solenoid on circuit T40 when the coil side of the engine starter motor relay energizes. Circuit A1 from the fuse 4 in the PDC supplies battery voltage to t he conta ct side of the start er motor relay. The ignition switch supplies battery voltage to the coi l s i d e o f t h e s t a r t e r m ot or r e la y on ci r cu i t A4 1 w h e n t h e k e y i s m ov ed t o t h e S TAR T p o si t ion a n d the Par k/Neutra l position switch is closed. Ground for the coil side of the starter motor relay is supplied by th e case grounded Par k/Neutra l position switch. Circuit T41 connects the coil side of the relay to the Park/Neutral position switch. Wh e n t h e s t a r t er m ot or r e la y e n er gi ze s a n d t h e contacts close, circuit T40 supplies battery voltage to the starter motor solenoid. Circuit A0 from the batt e r y s u p p li es v ol t a ge t o t h e s t a r t e r m ot or w h en t h e solenoid energizes. MANUAL T RANSMISSIONS C ir cu i t A 0 fr om t h e b a t t e r y i s d ou b le cr i m p ed a t t h e p os it i ve b a t t e r y p os t . O n e b r a n ch of ci r cu i t A0 (b a t t er y p os it ive ca b le ) con n e ct s t o t h e b a t t er y starter motor. The other A0 branch supplies voltage t o t h e b us b ar in t h e P ow er D is tr ib ut ion C en t er (PDC).
T h e P D C s u pp lie s b a t t er y volt a ge t o t h e e n gin e starter motor solenoid on circuit T40 when the coil side of the engine starter motor relay energizes. Circuit A1 from the fuse 4 in the PDC supplies battery voltage to t he conta ct side of the start er motor relay. The ignition switch supplies battery voltage to the coi l s i d e of t h e s t a r t e r m ot or r e la y on ci r cu i t A4 1 when the key is moved t o th e START position. Circuit T41 from the coil side of the relay connects t o a Z2 jumper wire in the back-up lamp switch. Circuit Z2 provides ground for the starter motor relay. Wh e n t h e s t a r t er m ot or r e la y e n er gize s a n d t h e contacts close, circuit T40 supplies battery voltage to the starter motor solenoid. Circuit A0 from the batt e r y s u p p li es v ol t a ge t o t h e s t a r t e r m ot or w h e n t h e solenoid energizes.
HELPFUL INFORMATION T h e P a r k /N e u t r a l s w it ch cl os e s w h e n t h e t r a n s m i ss ion i s i n e it h e r t h e P AR K or N E U T R AL p os itions. • Circuit T41 a lso connects to cavity 30 of th e Powertrain Control Module (PCM). This input tells the PCM the operator is starting the vehicle. •
DIAGRAM INDEX Component Engine Starter Motor . . . . . . . . . . . . . . . . . . . . Engine Starter Motor Relay . . . . . . . . . . . . . . . . Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . Park/Neutral Position Switch . . . . . . . . . . . . . . . Power Distribution Center (PDC) . . . . . . . . . . . . . Powertrain Control Module (PCM) . . . . . . . . . . . . Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . .
Page . .8W-21-2 . .8W-21-2 . .8W-21-2 . .8W-21-2 . .8W-21-2 . .8W-21-2 . .8W-21-2
J
8W-30 FUEL/IGNITION— YJ VEHICLES
8W - 30 - 1
FUEL/IGNITION INDEX page Automatic Shut Down (ASD) Relay . . . . . . . . . . . . . Battery Feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brake Switch Input . . . . . . . . . . . . . . . . . . . . . . . . . Camshaft Position Sensor . . . . . . . . . . . . . . . . . . . . Crankshaft Position Sensor . . . . . . . . . . . . . . . . . . . Data Link Connector . . . . . . . . . . . . . . . . . . . . . . . . Diagram Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . Engine Coolant Temperature Sensor . . . . . . . . . . . . Fuel Injectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel Pump Module . . . . . . . . . . . . . . . . . . . . . . . . . Fuel Pump Relay . . . . . . . . . . . . . . . . . . . . . . . . . . Heated Oxygen Sensor . . . . . . . . . . . . . . . . . . . . . .
1 2 5 3 3 5 5 3 2 2 2 3
IGNITION SWITCH Circuit A1 from fuse 4 in the Power Distribution Center (PDC), supplies battery voltage to the ignition switch. Depending upon position, the ignition switch powers circuits A21, A22, A31, and A41.
START POSITION In the START position, the ignition switch connects circuit A1 to circuit A41. Circuit A41 connects to the coil side of the starter motor relay. Also in the START position, the case grounded ign i t ion s w it ch p r ov id e s g r ou n d for t h e b r a k e l a m p switch and parking brake lamp switch on circuit G11. START OR RUN POSITION I n t h e S TAR T a n d R U N p os it ion , t h e ig n it ion switch connects circuit A1 with circuit A21. The A21 ci r cu i t con n e ct s t o f u s es 5 a n d 9 i n t h e fu s e b lock . Fuse 9 powers circuit G5. Fuse 5 powers circuit G50. Circuit G5 powers the buzzer module. Circuit G5 a ls o s plice s t o p ow er t h e d a yt im e r u n n in g la m p s module (Cana da only), A/C compr essor clutch relay, heated rear window relay, and the gauges and indicator lamps in the instrument cluster. •
RUN (ONLY) POSITION When the ignition switch is in the RUN position, it connects circuit A1 to circuit A22. Circuit A22 powers fuses 1, 12, and 13 in the fuse block. F u s e 1 p ow er s t h e r e a r w ip e r s y s t em on ci r cu i t V23. Fuse 12 feeds the blower motor and air conditioning system on circuit C1. Fuse 13 feeds circuit F15 which powers t he ABS m od u le a n d con n e ct s t o t h e coi l s id e of t h e AB S power relay. •
•
•
page Idle Air Control (IAC) Motor . . . . . . . . . . . . . . . . . . . Ignition Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intake Air Temperature Sensor . . . . . . . . . . . . . . . . Malfunction Indicator Lamp (MIL) . . . . . . . . . . . . . . . Manifold Absolute Pressure Sensor . . . . . . . . . . . . . Park/Neutral Position Switch . . . . . . . . . . . . . . . . . . Power (Device) Ground . . . . . . . . . . . . . . . . . . . . . . Power Steering Pressure Switch . . . . . . . . . . . . . . . Tachometer Signal . . . . . . . . . . . . . . . . . . . . . . . . . Throttle Position Sensor . . . . . . . . . . . . . . . . . . . . . Vehicle Speed Sensor . . . . . . . . . . . . . . . . . . . . . . .
2 2 1 4 5 4 4 5 4 5 4 3
ACCESSORY OR RUN POSITION In the ACCESSORY or RUN position, the ignition switch connects circuit A1 to circuit A31. Circuit A31 con n e ct s t o a b u s b a r i n t h e fu s e b l ock t h a t fe ed s fuses 4 and 7 along with the circuit breaker in cavity 11. Fuse 4 powers circuit L5 which feeds the turn signal flasher. F u s e 7 p ow er s ci r cu i t F 3 0. C ir cu i t F 3 0 s u p p li es power to the radio, radio relay, and the cigar lighter. The circuit breaker in cavity 11 powers the V6 circuits which feed the wiper switch and wiper motor. •
•
•
AUTOMATIC SHUT DOWN (ASD) RELAY When the ignition switch is in either the START or RUN position, it connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) to circuit A21. Circuit A21 powers fuse 5 in the fuse block. Circuit G50 from fuse 5 splices to power the coil side of the Automatic Shut Down (ASD) relay. The Powertrain Control Module (PCM) provides ground for the relay on circuit K51. Circuit K51 connects to cavity 51 of the PCM. When t he PCM grounds the ASD r elay, contacts inside the relay close and connect circuit A14 from fuse 1 in the PDC to circuit A142. Circuit A142 splices to the generator field terminal, fuel injectors, ignition coil, a nd heat ed oxygen sensor. Circuit A142 a lso connects to cavity 57 of the PCM. C ir cu i t A 14 fr om fu s e 1 i n t h e P D C s u p p li es b a t tery voltage to the contact side of th e ASD r elay.
HELPFUL INFORMATION Al on g w it h s u p p ly in g v ol t a ge t o t h e AS D r e la y contacts, circuit A14 supplies voltage to the conta ct side of the fuel pump relay. C ir cu i t G 50 a l so s u p p li es b a t t e r y v ol t a ge t o t h e coil side of the fuel pump relay. Circuit A14 also connects to cavity 3 of the PCM. •
•
•
8W - 30 - 2
8W-30 FUEL/IGNITION— YJ VEHICLES
BATTERY FEED Circuit A14 from fuse 1 in the Power Distribution Center (PDC) supplies battery voltage to cavity 3 of the Powertrain Control Module (PCM).
HELPFUL INFORMATION Circuit A14 also supplies power to the contact sides of t h e Au t o m a t ic S h u t D ow n (AS D ) r e la y a n d fu e l pump relay.
FUEL INJECTORS When the Automatic Shut Down (ASD) relay contacts close, they connect circuits A14 and A142. Circuit A142 supplies voltage to the fuel injectors. Each injector has a separate ground circuit controlled by the Powertrain Control Module (PCM). Circuit K11 provides ground for injector number on e . T h e K 11 ci r cu i t con n e ct s t o ca v it y 1 6 of t h e PCM. Circuit K12 pr ovides ground for injector number t w o. T h e K 12 ci r cu i t con n e ct s t o ca v it y 1 5 of t h e PCM. Circuit K13 pr ovides ground for injector number t h r e e . T h e K 13 ci r cu i t con n e ct s t o ca v it y 1 4 of t h e PCM. Circuit K14 pr ovides ground for injector number fou r . T h e K 14 ci r cu i t con n e ct s t o ca v it y 1 3 of t h e PCM. On the 4.0L engine, circuit K15 provides ground for injector number five. The K15 circuit connects to cavity 38 of the PCM. Al so on t h e 4 .0 L e n gi n e, cir cu it K 16 p r ovi de s ground for injector number six. The K16 circuit connects to cavity 58 of the PCM.
HELPFUL INFORMATION Circuit A142 splices to supply voltage to the fuel injectors, ignition coil, PCM, generator, a nd heated oxygen sensor. For information about fuel injector operation, refer to Group 14. •
•
IGNITION COIL When the Automatic Shut Down (ASD) relay contacts close, they connect circuits A14 and A142. Circu i t A1 42 s p li ce s t o s u p p ly v ol t a ge t o t h e i gn i t ion coil. Th e Powertra in Contr ol Module (PCM) controls the ground path for the ignition coil on circuit K19. Circuit K19 connects t o cavity 19 of th e PCM.
HELPFUL INFORMATION Circuit A142 splices to supply voltage t o t he fuel injectors, ignition coil, PCM, generator, a nd heated oxygen sensor.
FUEL PUMP RELAY When the ignition switch is in either the START or RUN position, it connects circuit A1 from fuse 4 in
J
the Power Distribution Center (PDC) to circuit A21. Circuit A21 powers fuse 5 in the fuse block. Circuit G50 from fuse 5 splices to power the coil side of the fu e l p u m p r e la y. T h e P ow er t r a i n C on t r o l M od u l e (PCM) provides ground for the relay on circuit K51. Circuit K51 connects to cavity 51 of the PCM. When the PCM grounds the fuel pump relay, contacts inside the relay close and connect circuit A14 from fuse 1 in the PDC to circuit A141. Circuit A141 supplies voltage to the fuel pump motor (part of the in-tank fuel pump module).
HELPFUL INFORMATION Circuit A14 is double crimped at the fuel pump rel a y a n d s u p p li es v ol t a ge t o t h e con t a c t s id e s o f t h e fuel pump relay and ASD relay. C ir cu i t G 50 a l so s u p p li es b a t t e r y v ol t a ge t o t h e coil side of the ASD relay. Circuit A14 also connects to cavity 3 of the PCM. •
•
•
FUEL PUMP MODULE FUEL PUMP MOTOR When the fuel pump relay conta cts close, circuit A141 feeds the fuel pump motor. Circuit Z2 provides ground for the fuel pump motor. FUEL LEVEL SENSOR The fuel level sensor is a variable resistor. Circuit G4 connects the fuel level sensor to the fuel gauge in the instrument cluster. Circuit G5 from fuse 9 in the fuse block supplies voltage to the fuel gauge. The fuel level sensor draws voltage from circuit G5 through the fuel gauge on circuit G4. C ir cu i t Z2 p r ov id es t h e g r ou n d p a t h for t h e fu e l level sensor.
HELPFUL INFORMATION As cu r r e n t flow s t h r ou gh t h e coils in t h e fu e l gauge, it creates a magnetic field. One of the coils in t h e g a u ge r e ce iv es fi xe d cu r r e n t . T h e ot h e r coi l i s connected to the level sensor. The magnetic field controls the position of th e fuel gauge pointer. The fuel level sensor conta ins a variable resistor. As the position of the float arm on the fuel level sens or ch a n g e s, t h e r e s is t or ch a n g e s t h e cu r r e n t fl ow t h r o u gh s e con d coi l i n t h e fu e l g a u ge . A c h a n g e i n cu r r e n t flow a lt e r s t h e m a gn e t ic fi eld in t h e fu e l gauge, which changes the pointer position.
IDLE AIR CONTROL (IAC) MOTOR T h e P ow er t r a i n C on t r o l M od u l e (P C M) op e r a t es the idle a ir control motor through 4 circuits - K39, K40, K59, and K60. Each circuit connects to separate cavities in the PCM connector. Circuit K39 connects t o cavity 39 of th e PCM. • Circuit K40 connects t o cavity 40 of th e PCM. • Circuit K59 connects t o cavity 59 of th e PCM. •
8W-30 FUEL/IGNITION— YJ VEHICLES
J
•
Circuit K60 connects to cavity 60 of the PCM.
VEHICLE SPEED SENSOR C ir cu i t K 7 s u p p li es 8 v ol t s fr om t h e P ow er t r a i n Control Module (PCM) to the vehicle speed sensor. The K7 circuit connects to cavity 7 of the PCM. Circuit G7 from the vehicle speed sensor provides an input signal to the PCM. The G7 circuit connects to cavity 47 of the PCM. The PCM provides a ground for the vehicle speed sensor signal (circuit G7) through circuit K4. Circuit K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION C ir cu i t G 7 s p li ce s t o t h e s p ee d om e t e r, a n d D a ytime Running Lamp module (DRL). Circuit K7 splices to supply 8 volts to the camshaft position sensor and crankshaft position sensor. Circuit K4 splices to supply ground for the signals from the following: Heated oxygen sensor Camshaft position sensor Crankshaft position sensor Throttle position sensor Manifold absolute pressure sensor Engine coolant temperature sensor I n t a k e a i r t e m p er a t u r e s e n sor •
•
• • • •
8W - 30 - 3
CAMSHAFT POSITION SENSOR The Powertrain Control Module (PCM) supplies 8 volts to the camshaft position sensor (in distributor) on circuit K7. Circuit K7 connects to cavity 7 of the PCM. The PCM receives the camshaft position sensor signal on circuit K44. Circuit K44 connects to cavity 44 of the PCM. The PCM provides a ground for the camshaft position sensor signal (circuit K44) t hrough circuit K4. Circuit K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION Circuit K7 splices to supply 8 volts to the crankshaft position sensor and the vehicle speed sensor. Circuit K4 splices to supply ground for the signals from th e following: Heated oxygen sensor Crankshaft position sensor I n t a k e a i r t e m p er a t u r e s e n sor Throttle position sensor Manifold absolute pressure sensor Engine coolant temperature sensor Vehicle speed sensor •
• • • • • • •
• • •
HEATED OXYGEN SENSOR When the Automatic Shut Down (ASD) relay contacts close, they connect circuits A14 and A142. Circu i t A1 42 s p li ce s t o s u p p ly v ol t a ge t o t h e h e a t e d oxygen sensor. Circuit K41 delivers the signal from the heated oxyge n s en s or t o t h e P ow er t r a in C on t r ol M od u le (PCM). Circuit K41 connects to cavity 41 of the PCM. The PCM provides a ground for the heated oxygen sensor signa l (circuit K41) th rough circuit K4. Circuit K4 connects to cavity 4 of the PCM connector. Circuit Z1 provides a ground for the heater circuit in the sensor. Circuit Z1 terminates at the rear of the engine.
CRANKSHAFT POSITION SENSOR The Powertrain Control Module (PCM) supplies 8 volts to the crankshaft position sensor on circuit K7. Circuit K7 connects to cavity 7 of the PCM. The PCM receives the crank shaft position sensor signal on circuit K24. Circuit K24 connects to cavity 24 of the PCM. The PCM provides a ground for the crankshaft position sensor (circuit K24) through circuit K4. Circuit K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION Circuit K7 splices to supply 8 volts to the crankshaft position sensor and the vehicle speed sensor. Circuit K4 splices to supply ground for the signals from th e following: Heated oxygen sensor Camshaft position sensor I n t a k e a i r t e m p er a t u r e s e n sor Throttle position sensor Manifold absolute pressure sensor Engine coolant temperature sensor Vehicle speed sensor •
• •
HELPFUL INFORMATION Al on g w it h s u p p ly in g v ol t a ge t o t h e AS D r e la y contacts, circuit A14 supplies voltage to the contact side of the fuel pump relay. Circuit A142 splices to supply voltage to the fuel injectors, ignition coil, and heated oxygen sensor. Circuit K4 splices to supply ground for the signals from the following: Camshaft position sensor Crankshaft position sensor I n t a k e a i r t e m p er a t u r e s e n sor Throttle position sensor Manifold absolute pressure sensor Engine coolant temperature sensor Vehicle speed sensor •
•
• • • • • • •
• • • • •
ENGINE COOLANT TEMPERATURE SENSOR The engine coolant temperatur e sensor provides a n i n p u t t o t h e P ow er t r a i n C on t r o l M od u le (P C M ) on circuit K2. From circuit K2, the engine coolant temperature sensor draws up to 5 volts from the PCM. The sensor is a variable resistor. As coolant temperature changes, the resistance in the sensor changes, ca u s in g a ch a n ge in cu r r e n t d r a w. T h e K 2 cir cu it connects to cavity 2 of the PCM.
8W - 30 - 4
8W-30 FUEL/IGNITION— YJ VEHICLES
The PCM provides a ground for the engine coolant temperature sensor signal (circuit K2) through circuit K4. Circuit K4 connects to cavity 4 of the PCM connector.
HELPFUL INFORMATION Circuit K4 splices to supply ground for the signals from the following: Heated oxygen sensor Camshaft position sensor Crankshaft position sensor I n t a k e a i r t e m p er a t u r e s e n sor Throttle position sensor Manifold absolute pressure sensor Vehicle speed sensor •
J
Circuit K4 splices to supply ground for the signals from th e following: • Heated oxygen sensor • Camshaft position sensor • Crankshaft position sensor • I n t a k e a i r t e m p er a t u r e s e n sor • Throttle position sensor • Engine coolant temperature sensor • Vehicle speed sensor
• • • • • •
THROTTLE POSITION SENSOR From the Powertrain Control Module (PCM), circuit K6 supplies 5 volts to the Throttle Position Sens or (T P S ). C ir cu i t K 6 con n e ct s t o ca v it y 6 of t h e PCM. C ir cu i t K 22 d e li ve r s t h e T P S s ig n a l t o t h e P C M . Circuit K22 connects t o cavity 22 of th e PCM. T h e P C M p r ov id e s a g r ou n d for t h e t h r o t t le p os ition sensor signal (circuit K22) t hrough circuit K4. Circuit K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION Refer to Group 14 for throttle position sensor operation. Circuit K6 splices to supply 5 volts to the Manifold Absolute Pressure (MAP) sensor. Circuit K4 splices to supply ground for the signals from the following: Heated oxygen sensor Camshaft position sensor Crankshaft position sensor I n t a k e a i r t e m p er a t u r e s e n sor Manifold absolute pressure sensor Engine coolant temperature sensor Vehicle speed sensor • • • • • • •
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
INTAKE AIR TEMPERATURE SENSOR The intake air temperature sensor provides an input to the Powertrain Control Module (PCM) on circu i t K 21 . C ir cu i t K 21 con n e ct s t o ca v it y 2 1 of t h e PCM. From circuit K21, the intake air temperature sens or d r a ws v ol ta g e f r om t h e P C M. T h e s en s or is a variable resistor. As intake air temperature changes, t h e r es is t an ce in t h e s en s or ch a n ge s, ca u sin g a change in current draw. The PCM provides a ground for the intake air temperatur e sensor signal (circuit K21) t hrough circuit K4. Circuit K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION Circuit K4 splices to supply ground for the signals from the following: Heated oxygen sensor Camshaft position sensor Crankshaft position sensor Throttle position sensor Manifold absolute pressure sensor Engine coolant temperature sensor Vehicle speed sensor • • • • • • •
PARK/NEUTRAL POSITION SWITCH When closed, t he case-grounded park/neutral position switch provides a ground path on circuit T41 for the coil side of the start er motor relay. Circuit A41 from the ignition switch provides battery voltage t o the coil side of the relay. Circuit T41 splices to cavity 30 of th e Powertrain C on t r o l M od u le (P C M). T h e p a r k /n e u t r a l p os it i on switch provides an input to the (PCM).
From the Powertrain Control Module (PCM), circu i t K 6 s u p p li es 5 v ol t s t o t h e M a n ifol d A bs ol u t e Pressure (MAP) sensor. Circuit K6 connects to cavity 6 of the PCM. C ir cu i t K 1 d e l iv er s t h e M AP s ig n a l t o t h e P C M. Circuit K1 connects to cavity 1 of the PCM. T h e P C M p r ov id e s a g r ou n d for t h e M AP s e n sor signal (circuit K1) thr ough circuit K4. Circuit K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION In the START position, the ignition switch connects circuit A1 from the Power Distribution Center (PDC) to circuit A41. Fuse 4 in the fuse block protects circuits A1 and A41. T h e P a r k /N e u tr a l p os it ion s wi tch a n d b a ck -u p lamp switch are molded together.
HELPFUL INFORMATION Refer to Group 14 for MAP sensor operation. Circuit K6 splices to supply 5 volts to the throttle position sensor.
T h e P ow er t r a i n C on t r o l M od u le (P C M ) s u p p li es voltage to the power steering pressure switch on circuit K10. Circuit Z1 provides ground for the switch. When the switch closes, voltage flows through the
•
•
POWER STEERING PRESSURE SWITCH
J
8W-30 FUEL/IGNITION— YJ VEHICLES
switch to ground on circuit Z1. The switch closes duri n g p e r i od s of h i gh p ow er s t e er i n g p u m p l oa d a n d l ow e n gi n e s p ee d ; s u ch a s p a r k in g m a n e u v er s . C ir cuit K10 connects to cavity 10 of the PCM.
TACHOMETER SIGNAL The Powertrain Control Module (PCM) supplies the signal for the tachometer on circuit G21. Circuit G21 connects to cavity 43 of the PCM.
MALFUNCTION INDICATOR LAMP (MIL) T h e P ow er t r a i n C on t r o l M od u le (P C M) p r ov id e s ground for the instrument cluster malfunction indicat or l a m p o n ci r cu i t G 3. T h e M IL d is p la y s t h e m e s sage CHECK ENGINE when illuminated. Circuit G5 provides voltage for the lamp.
DATA LINK CONNECTOR C ir cu i t G 50 s u p p li es b a t t e r y v ol t a ge t o t h e d a t a link connector. Circuit G50 originates at fuse 5 in the fuse block. Circuit G50 is double crimped at the data link connector and connects to cavity 9 of the Powertrain Control Module (PCM). Circuit A21 from the ignition switch powers fuse 5 when the switch is in the START or RUN positions. In the START or RUN position the ignition switch connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) with circuit A21. Circuit D20 connects t o cavity 45 of the PCM. Circuit D20 is the SCI receive circuit for the PCM. Circuit D21 connects t o cavity 25 of the PCM. Circuit D21 is the SCI transmit circuit for the PCM. Circuit Z11 provides ground for the data link connector. Circuit Z11 splices t o circuit Z1 which term inates at the right rear of the engine. Circuit Z11 also connects to cavity 5 of the PCM.
HELPFUL INFORMATION C ir cu it Z1 a ls o s u p p li es a g r ou n d for t h e P C M high current drivers. If the system loses ground for the Z1 and Z11 circuits at the right rear of the engine, the vehicle will n ot op e r a t e. C h eck t h e con n e ct i on a t t h e g a n ge d ground circuit eyelet. •
•
BRAKE SWITCH INPUT Circuit V40 provides the brake switch input to the Powertra in Cont rol Module (PCM). Circuit V40 connects to cavity 29 of the PCM.
8W - 30 - 5
POWER (DEVICE) GROUND Circuit Z11 connects to cavities 11 and 12 of th e Powertra in Control Module (PCM). The Z1 circuit provides ground for PCM internal drivers that operate high current devices like th e injectors a nd ignition coil. Internal to the PCM, the power (device) ground circuit connects to the PCM sensor return circuit (from circuit K4).
HELPFUL INFORMATION The grounding point for circuit Z1 is the right rear of t he engine. I f t h e s ys t e m l os e s g r ou n d for t h e Z1 ci r cu i t s a t t h e r e a r of t h e e n gi n e, t h e v eh i cl e w i ll n ot op e r a t e. Check the connection at the ganged-ground circuit eyelet. •
•
DIAGRAM INDEX Component Page Automatic Shut Down Relay . . . . . . . . . . . . . . .8W-30-6, 14 Camshaft Position Sensor . . . . . . . . . . . . . . . .8W-30-10, 16 Crankshaft Position Sensor . . . . . . . . . . . . . . .8W-30-10, 16 Data Link Connector . . . . . . . . . . . . . . . . . . .8W-30-11, 17 Daytime Running Lamps (DRL) Module . . . . . . .8W-30-11, 17 Engine Coolant Temperature Sensor . . . . . . . . . .8W-30-9, 18 Fuel Pump Relay . . . . . . . . . . . . . . . . . . . . . . . .8W-30-20 Fuel Tank Level Unit . . . . . . . . . . . . . . . . . . . . . .8W-30-21 Fuse 1 (PDC) . . . . . . . . . . . . . . . . . . . . . . . .8W-30-6, 14 Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . .8W-30-6, 14 Fuse 5 (Fuse Block) . . . . . . . . . . . . . . . . .8W-30-6, 14, 20 Heated Oxygen Sensor . . . . . . . . . . . . . . . . . .8W-30-7, 15 Idle Air Control Motor . . . . . . . . . . . . . . . . . .8W-30-12, 18 Ignition Switch . . . . . . . . . . . . . . . . . . . . .8W-30-6, 14, 20 Ignition Coil . . . . . . . . . . . . . . . . . . . . . . . .8W-30-12, 18 Injectors (4.0L) . . . . . . . . . . . . . . . . . . . . . . . . .8W-30-13 Injectors (2.5L) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-30-8 Instrument Cluster . . . . . . . . . . . . . . . . . . . .8W-30-11, 17 Intake Air Temperature Sensor . . . . . . . . . . . . .8W-30-9, 18 MAP Sensor . . . . . . . . . . . . . . . . . . . . . . . . .8W-30-9, 18 Power Steering Pressure Switch . . . . . . . . . . . . . .8W-30-12 Powertrain Control Module . . . . . . . . . . . . .8W-30-6 thru 21 Throttle Position Sensor . . . . . . . . . . . . . . . . .8W-30-9, 18 Vehicle Speed Sensor . . . . . . . . . . . . . . . . . .8W-30-11, 17
J
8W- 31 TRANSM ISSION CONTROLS— YJ VEHI CLES
8W - 31 - 1
TRANSMISSION CONTROLS TORQUE CONVERTER CLUTCH (TCC) SOLENOID AND RELAY The TCC solenoid is only used on three-speed automatic tra nsmissions. The Powertrain Control Module (PCM) operates the TCC solenoid by energizing the TCC relay. Circuit G50 from fuse 5 in the Power Distribution Center (PDC) supplies voltage to the coil side of the TCC relay. When the PCM provides a ground path on circuit K54, the relay contacts close. When the relay contacts close, they connect circuit A14 from fuse 1 in the PDC with circuit T22. Circuit T 22 s u p p li es b a t t e r y v ol t a ge t o t h e ca s e g r ou n d e d TCC solenoid. Circuit K54 connects to PCM cavity 54 .
HELPFUL INFORMATION In the RUN or START position, the ignition switch connects circuit A1 from fuse 4 in the PDC to circuit A21. Circuit A21 powers fuse 5 in the fuse block. Circuit G50 also connects to the engine data link connector, Automatic Sh ut Down (ASD) relay, and fuel pump relay. •
• •
UPSHIFT LAMP On vehicles equipped with a manual transmission, t h e P C M g r ou n d s t h e u p -s h ift l a m p on ci r cu i t K 5 4. Circuit K54 connects to cavity 54 of the PCM.
DIAGRAM INDEX Component Fuse 1 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . Fuse 5 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . Instrument Cluster . . . . . . . . . . . . . . . . . . . . . . . Powertrain Control Module (PCM) . . . . . . . . . . . . . TCC Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . TCC Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . .
Page .8W-31-2 .8W-31-2 .8W-31-2 .8W-31-2 .8W-31-2 .8W-31-2 .8W-31-2 .8W-31-2
J
8W-32 ANTI-LOCK BRAKES— YJ VEHICLES
8W - 32 - 1
ANTI-LOCK BRAKES GENERAL INFORMATION
ACCELERATION SWITCH
Three fuses supply power for the Anti-Lock Brake S ys t e m ( AB S ); fu s e s 9 a n d 1 0 i n t h e P D C a n d fu s e 13 in the fuse block. Fuses 9 and 10 in the Power Distribution Center (PDC) ar e connected directly t o battery voltage and are HOT all times. Fuse 13 is HOT when the ignition switch is the RUN position. In the RUN position, the ignition switch connects circuit A1 from fuse 4 in the PDC with circuit A22. Circuit A22 connects to a bus bar in the fuse block. The bus bar feeds circuit F15 through fuse 13. Fuse 13 is a 2 amp fuse. C ir cu it F 1 5 s pl ice s t o t h e coil s id e of t h e AB S power relay and cavity 53 of the ABS control module. C ir cu i t Z1 p r ov id e s g r ou n d for t h e AB S con t r o l module. Circuit Z1 connects t o cavities 1 and 19 of the ABS control module. Refer to group 5, Bra kes for operational descriptions of ABS system components.
During four-wheel drive operation, the acceleration switch provides deceleration data to the ABS control module. Refer to Group 5, Brakes for additional information. Circuits B21, B22, and B23 connect the acceleration sensor to the ABS control module. Circuits B21 and B22 provide switch states while circuit B23 provides ground. At the ABS control module circuit B21 conn ects to cavity 25, circuit B22 conn ects to cavity 43 and circuit B23 connects t o cavity 26.
WHEEL SPEED SENSORS T h e a l l w h e e l a n t i -l ock s ys t e m u s e s fou r w h e el speed sensors; one for each wheel. Each sensor conv er t s w h e el s p ee d i n t o a n e le ct r i ca l s ig n a l t h a t i t t r a n sm it s t o t h e AB S con t r ol m od u le. A p a ir of twisted wires connect to each sensor to provide signals to the ABS control module. Circuits B6 and B7 provide signals to ABS control module from the right front wheel speed sensor. Circuit B6, which provides the LOW signal, connects to cavity 29 of the ABS control module. Circuit B7 conn e ct s t o c a vi t y 4 7 of t h e m od u le a n d p r ov id e s t h e HIGH signal. Circuits B8 and B9 provide signals to ABS control module from the left front wheel speed sensor. Circuit B8, which provides the LOW signal, connects to cavity 30 of the ABS control module. Circuit B9 conn e ct s t o c a vi t y 4 8 of t h e m od u le a n d p r ov id e s t h e HIGH signal. Circuits B1 and B2 provide signals to ABS control module from the right rear wheel speed sensor. Circuit B1 which provides the LOW signal, connects t o cavity 27 of the ABS control module. Circuit B2 conn e ct s t o c a vi t y 4 5 of t h e m od u le a n d p r ov id e s t h e HIGH signal. Circuits B4 and B3 provide signals to ABS control module from the left rear wheel speed sensor. Circuit B3, which provides the LOW signal, connects to cavity 28 of th e ABS cont rol module. Circuit B4 connects to cavity 46 of the module and provides the HIGH signal.
ABS POWER RELAY The ABS power relay is located in the Power Dist r ib u t ion C en t e r (P D C). Wh e n t h e AB S m od u le grounds the ABS power relay on circuit B20, the relay switches t o connect circuit B15 and circuit A20 fr om P D C fu s e 1 0. C ir cu i t F 1 5 fr om fu s e 1 3 i n t h e fuse block splices to feed the coil side of t he ABS power relay. Circuit B20 connects to cavity 34 of the ABS control module. Circuit B15 is double crimped at the ABS power relay. One branch of circuit B15 supplies power to the coi l s i d e o f t h e AB S p u m p m ot or r e la y. T h e ot h e r branch of circuit B15 splices to cavities 3 and 33 of the ABS control module and to the hydraulic control unit.
ABS PUMP MOTOR RELAY The ABS pump motor relay in the Power Distribution Center (PDC) supplies voltage to the ABS pump motor. When the ABS power relay energizes, circuit B 15 s u p p li es b a t t e r y v ol t a ge t o t h e coi l s i d e of t h e ABS pump motor relay. The ABS control module provides ground for the relay on circuit B116. Circuit B116 connects to cavity 15 of t he ABS control module. When the ABS pump motor energizes, it connects circuit A10 from PDC fuse 9 to circuit B25. Circuit B25 supplies battery voltage to the pump motor. Circuit Z12 provides ground for the pump motor.
PUMP MOTOR SPEED SENSOR The input from the pump motor speed sensor tells the ABS control module that the pump is operating. Circuit B17 and B16 from the control module connect to the speed sensor.
BRAKE PEDAL TRAVEL SENSOR T h e b r a k e p e da l t r a v el s e n sor p r ov id e s t h e AB S control module with data regarding brake pedal posit i on . T h e s e n s or i s a v a r ia b le r e s is t or t h a t t h e A BS
8W - 32 - 2
8W-32 ANTI-LOCK BRAKES— YJ VEHICLES
module provides voltage t o a nd receives input from. Circuit B210 from cavity 41 of the ABS control module provides voltage to the sensor. Circuit B258 carr i es t h e s ig n a l f r om t h e s e n sor t o c a vi t y 1 6 o f t h e ABS module.
BRAKE SWITCH INPUT Circuit L50 from the stop lamp provides the brake s w it ch i n pu t t o t h e AB S con t r o l m o du l e. W h en t h e brake pedal is pressed, the stop lamp switch closes to s u p p ly b a t t e r y v ol t a ge fr om ci r cu i t F 3 2 t o ci r cu i t L 50 . C ir cu i t L 50 con n e ct s t o ca v it y 3 2 of t h e AB S con t r o l m o d u le . C ir cu i t F 3 2 or i gi n a t e s a t fu s e 3 i n the fuse block. Circuit A6 from Power Distribution Center (PDC) fuse 3 supplies voltage t o t he fuse block for circuit F32.
HYDRAULIC CONTROL UNIT When the ABS power relay energizes, two branches of circuit B15 splice to supply voltage to the isolation a n d d e ca y s ol en oi ds i n t h e h y dr a u l ic con t r o l u n i t . T h e h y dr a u l ic con t r o l u n i t con t a i n s t h r e e s e pa r a t e i sol a t ion s ol en oi ds a n d t h r e e s e pa r a t e d e ca y s ol enoids. The ABS control module activates the decay and isolation solenoids by providing separate ground paths for each. T h e A BS m od u le p r ov id e s a g r ou n d p a t h for t h e rear isolation solenoid on circuit B251. Circuit B251 connects to cavity 54 of the ABS control module. For the right front isolation solenoid, the ABS module provides a ground path on circuit B249. Circuit B249 connects to cavity 38 of the ABS control module. On circuit B245, t he ABS module provides ground for the left front isolation solenoid. Circuit B245 connects to cavity 20 of the ABS control module. T h e A BS m od u le p r ov id e s a g r ou n d p a t h for t h e rear decay solenoid on circuit B254. Circuit B254 connects to cavity 36 of the ABS control module. For the right front decay solenoid, the ABS module provides a ground path on circuit B248. Circuit B248 connects to cavity 21 of the ABS control module. On circuit B243, t he ABS module provides ground for th e left decay solenoid. Circuit B243 conn ects to cavity 2 of the ABS control module.
ABS WARNING LAMP C ir cu i t G 5 p r ov id e s p ow er for t h e AB S w a r n i n g lamp at the instrument cluster. Ground for the ABS warning lamp is provided by either the ABS control module or by the ABS power relay when the relay is not energized. The ABS control module illuminates the lamp by providing ground on circuit G19. C ir cu it G 19 s pl ice s t o con n e ct t o cir cu it B 15 t h r o u gh a d iod e . W h en t h e A B S p o we r r e la y i s n o t
J
energized, it connects circuit B15 to circuit Z12. The g r ou n d p a t h for t h e w a r n i n g la m p i s t h r o u gh t h e d iode t o circuit B15, t hrough the ABS power relay to ground on circuit Z12. T h e d iod e b et w ee n ci r cu i t G 19 a n d B 15 p r e ve n t s voltage from flowing t o th e ABS contr ol module when the ABS power relay switches to supply power on circuit B15.
DATA LINK CONNECTOR Circuit D11 from cavity 23 of the ABS control module receives data from the DRB scan tool through the data link connector. The ABS control m odule t ransm i t s d a t a t o t h e s ca n t ool t h r ou g h t h e con n e ct or on circuit D12. Circuit D12 originates at cavity 42 of the ABS control module. Through the data link connector, circuit Z12 pr ovides ground for the DRB scan tool. Circuit Z12 terminates at the right rear of the dash panel. Circuit A4 from fuse 8 in the Power Distribution Center (PDC) supplies power to fuse 16 in the PDC. F u s e 1 6 p ow er s ci r cu i t M 1 w h ich s u p p li es b a t t e r y voltage to the scan tool through the diagnostic connector.
HELPFUL INFORMATION Check fuses 4, 9 and 10 in the PDC Check fuse 13 in the fuse block • •
DIAGRAM INDEX Component Page ABS Power Relay . . . . . . . . . . . . . . . . . . . . . . . .8W-32-4 ABS Pump Motor/Sensor . . . . . . . . . . . . . . . . . . .8W-32-5 ABS Warning Lamp . . . . . . . . . . . . . . . . . . . . . . .8W-32-4 ABS Control Module . . . . . . . . . . . . . . . . . .8W-32-3 thru 7 ABS Pump Motor Relay . . . . . . . . . . . . . . . . . . . .8W-32-5 Brake Pedal Travel Sensor . . . . . . . . . . . . . . . . . . .8W-32-6 Data Link Connector . . . . . . . . . . . . . . . . . . . . . .8W-32-6 Fuse 1 Fuse Block . . . . . . . . . . . . . . . . . . . . . . . .8W-32-4 Fuse 3 Fuse Block . . . . . . . . . . . . . . . . . . . . . . . .8W-32-6 Fuse 3 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-32-6 Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-32-4 Fuse 8 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-32-6 Fuse 10 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-32-4 Fuse 12 Fuse Block . . . . . . . . . . . . . . . . . . . . . . .8W-32-4 Fuse 12 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-32-6 Fuse 13 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-32-4 Hydraulic Actuation Unit . . . . . . . . . . . . . . . . . . . .8W-32-3 Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . .8W-32-4 Powertrain Control Module (PCM) . . . . . . . . . . . . . .8W-32-6 Stop Lamp Switch . . . . . . . . . . . . . . . . . . . . . . . .8W-32-6 Wheel Speed Sensors . . . . . . . . . . . . . . . . . . . . . .8W-32-7
J
8W-40 INSTRUM ENT CLUSTER— YJ VEHICLES
8W - 40 - 1
INSTRUMENT CLUSTER INSTRUMENT CLUSTER T h e in s t r u m en t clu s t er con t a in s t h e g a u ge s a n d w a r n in g l am p s. All ga u g es h a ve m a gn e t ic m ove ments. When the ignition switch is in either the START or RUN position, circuit A1 from fuse 4 in the Power Distribution Center (PDC) connects to circuit A21. Circuit A21 powers fuse 9 in the fuse block. Fuse 9 powers circuit G5. One branch of circuit G5 connects directly to the combination buzzer. The other branch of circuit G5 splices to power the gauges, speedomet e r, t a ch om e t er , volt m e t er, in d ica t or la m p s, a n d w a r n i n g l a m p s i n t h e i n st r u m e n t cl u st e r. W h en t h e p a r k i n g l a m p s o r h e a d l a m p s a r e O N , t h e headlamp switch connects circuit F33 to circuit L7. Circuit L7 splices t o the dimmer switch. Circuit E1 fr om t h e d im m e r s w it ch p ow er s fu s e 1 0 i n t h e fu s e block when the parking lamps or headlamps are ON. Circuit E2 from fuse 10 in the fuse block feeds the illumination lamps in the instrument cluster. Circuit Z1 provides ground the instrument cluster illumination lamps, gauges and warning lamps.
HELPFUL INFORMATION C ir cu i t G 5 a l so p ow er s t h e h e a t e d r e a r w in d ow, A/C compressor clutch relay. On Cana dian vehicles, cir cu it G 5 p ow er s t h e D ayt im e R un n in g L am ps (DRL) module. Circuit F33 originates at fuse 8 in the fuse block. Circuit A6 from fuse 3 in the PDC powers fuse 8 in the fuse block. •
•
ENGINE COOLANT TEMPERATURE GAUGE Circuit G20 connects t he engine coolant temperature gauge to the engine coolant temperature sensor. The sensor is a variable resistor and case grounded to the engine. Circuit G5 connects to the instrument cluster and supplies voltage for the gauge. The gauge uses two coils. The first coil ha s fixed current flowing through it to maintain magnetic field s t r e n gt h . C ir cu i t Z1 p r ov id e s g r ou n d for t h e fi xe d cu r r e n t coi l. T h e cu r r e n t l ev el p a s s in g t h r o u gh t h e second coil is controlled by the variable resistor in the engine coolant temperatur e sender. The chan ging current varies the magnetic field in the second coil. R efe r t o g r ou p 8 E , I n s t r u m e n t P a n e l a n d G a u ge s for gauge operation. FUEL GAUGE Circuit G4 connects the fuel level sensor to the fuel gauge in the instrument cluster. Circuit G5 supplies voltage to the fuel gauge. The fuel level sensor draws voltage from circuit G5 through the fuel gauge on circuit G4.
The gauge u ses t wo coils. The first coil has fixed current flowing through it to maintain magnetic field s t r e n gt h . C ir cu i t Z1 p r ov id e s g r ou n d for t h e fi xe d cu r r e n t coi l. T h e cu r r e n t l ev el p a s s in g t h r o u gh t h e second coil is controlled by the variable resistor in the fuel level sensor. The changing current varies the magnetic field in the second coil. C ir cu i t Z2 p r ov id e s t h e g r ou n d p a t h for t h e fu e l level sensor. R efe r t o g r ou p 8 E , I n s t r u m e n t P a n e l a n d G a u g es for gauge operation.
OIL PRESSURE GAUGE T h e c a s e g r ou n d e d oi l p r e s su r e s e n di n g u n i t i s a variable resistor. The sending unit connects to the oil pressure gauge on circuit G60. Circuit G5 connects to the instrument cluster and s u p p li es b a t t e r y v ol t a ge t o t h e oi l p r e s s u r e g a u ge . The gauge uses two coils. The first coil has fixed curr e n t fl ow in g t h r o u gh i t t o m a i n t a in m a g n e t ic fi el d s t r e n gt h . C ir cu i t Z1 p r ov id e s g r ou n d for t h e fi xe d cu r r e n t coi l. T h e cu r r e n t l ev el p a s s in g t h r o u gh t h e second coil is controlled by the variable resistor in the oil pressure sending unit. The changing current varies the magnetic field in the second coil. R efe r t o g r ou p 8 E , I n s t r u m e n t P a n e l a n d G a u g es for gauge operation. TACHOMETER T h e P ow er t r a i n C on t r o l M od u le (P C M ) p r ov id e s the tachometer signal to the electronic tachometer on circuit G21. Circuit G21 originates at cavity 43 of the PCM. Circuit Z1 provides ground for the tachometer’s internal logic circuits. SPEEDOMETER The electronic speedometer and odometer receive a signal from the vehicle speed sensor on circuit G7. C ir cu i t G 5 c on n e ct s t o t h e i n st r u m e n t cl u st e r a n d supplies battery voltage to the speedometer. Circuit Z1 provides ground for the speedometer internal logic circuits. C ir cu i t G 7 s p li ce s t o con n e ct t o t h e P ow er t r a i n Control Module (PCM) and if equipped, the Daytime Running Lamps (DRL) m odule. FOUR-WHEEL DRIVE (4WD) INDICATOR LAMP When the 4WD switch closes, circuit Z1 provides ground for the 4WD indicator lamp in th e instrum ent panel. Circuit G5 connects to the instrument cluster a n d s u p p li es b a t t e r y v ol t a ge t o t h e 4 WD i n di ca t or lamp. Circuit G1 connects the indicator lamp to the 4WD switch.
8W - 40 - 2
8W-40 INSTRUM ENT CLUSTER— YJ VEHICLES
MALFUNCTION INDICATOR (CHECK ENGINE) LAMP T h e P ow er t r a i n C on t r o l M od u le (P C M) p r ov id e s ground for the malfunction indicator (Check Engine) lamp on circuit G3. Circuit G3 connects to cavity 32 of t h e P C M . C ir cu i t G 5 con n e ct s t o t h e i n s t r u m en t cluster and supplies battery voltage for the malfunction indicator lamp. When illuminated, the malfunct i on i n di ca t or l a m p d is p la y s t h e m e s sa g e C H E C K ENGINE. For informat ion regarding diagnostic trouble code access u sing th e malfunction indicator lamp, r efer to Group 14, Fuel Systems. UP-SHIFT LAMP On vehicles equipped with a manual transmission, t h e P ow er t r a in C on t r ol M od u le (P C M) p r ovid es ground for the Up-Shift lamp on circuit K54. Circuit G5 provides battery voltage for the lamp. ABS WARNING LAMP C ir cu i t G 5 p r ov id e s p ow er for t h e AB S w a r n i n g lamp at the instrument cluster. Ground for the ABS warning lamp is provided by either the ABS control module or by the ABS power relay when the relay is not energized. The ABS control module illuminates the lamp by providing ground on circuit G19. C ir cu it G 19 s pl ice s t o con n e ct t o cir cu it B 15 t h r o u gh a d iod e . W h en t h e A B S p o we r r e la y i s n o t energized, it connects circuit B15 to circuit Z12. The gr ou n d p a th for t h e w a rn in g la m p is p r ovid ed t h r o u gh t h e d iod e t o c ir cu i t B 15 , t h r ou g h t h e AB S power relay to ground on circuit Z12. T h e d iod e b et w e en ci r cu i t G 19 a n d B 15 p r e ve n t s voltage from flowing t o th e ABS contr ol module when the ABS power relay switches to supply power on circuit B15. BRAKE WARNING LAMP Circuit G5 pr ovides bat tery voltage for the brake w a r n i n g l a m p . C ir cu i t G 11 ca n p r ov id e g r ou n d for the lamp in 3 ways. The first ground path is through the ignition switch when the key is in the START position. T h e s econ d g rou n d p a t h for t h e b r a ke w a r n in g l a m p on ci r cu i t G 11 i s t h r ou g h t h e ca s e g r ou n d e d brake warning switch. When the switch closes it provides a ground. T h e t h i r d g r ou n d p a t h on ci r cu i t G 11 i s t h r ou g h t h e ca s e gr ou n ded p a rk b ra k e s wit ch . Wh en t h e switch closes it provides ground.
J
HIGH BEAM INDICATOR LAMP Circuit G34 supplies power for the high-beam indicator lamp when the operator either flashes the optical horn (high beams) or selects high beam operation. Circuit Z1 provides the ground path for the lamp. C ir cu i t L 3 fr om t h e h e a d la m p s w it ch p ow er s t h e high beam circuits of the headlamps. On vehicles not equipped with Daytime Running Lamps (DRL), circuit G34 double crimps to circuit L3 at the bulkhead connector. On vehicles equipped with DRL, circuit L3 splices to the DRL module. The DRL module powers circuit G34. TURN SIGNAL INDICATOR LAMPS Circuit L61 supplies battery voltage to the left turn signal indicator lamp. The right t urn signal indicator lamp receives battery voltage from circuit L60. The turn signal/hazard flasher switch powers circuits L60 and L61. Circuit Z1 provides ground for the lamps.
HELPFUL INFORMATION If the warning lamps, gauges and indicator lamps don’t operate, check fuse 4 in t he PDC a nd fuse 9 in the fuse block. If the illuminat ion lamps don’t operat e, check fuse • 10 in the fuse block. •
DIAGRAM INDEX Component Page 4WD Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-40-9 ABS Control Module . . . . . . . . . . . . . . . . . . . . . .8W-40-5 Brake Warning Switch . . . . . . . . . . . . . . . . . . . . .8W-40-5 Combination Buzzer . . . . . . . . . . . . . . . . . . . . .8W-40-7, 8 Daytime Running Lamp (DRL) Module . . . . . . . . .8W-40-4, 6 Engine Coolant Temperature Sensor . . . . . . . . . . .8W-40-7, 8 Engine Oil Pressure Sensor . . . . . . . . . . . . . . . . . .8W-40-9 Fuse 3 (PDC) . . . . . . . . . . . . . . . . . . . . . . .8W-40-3, 7, 8 Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . .8W-40-4, 7, 8 Fuse 7 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-40-6 Fuse 8 (Fuse Block) . . . . . . . . . . . . . . . . . . .8W-40-3, 7, 8 Fuse 9 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-40-8 Fuse 10 (Fuse Block) . . . . . . . . . . . . . . . . .8W-40-3, 7, 10 Gauge Package . . . . . . . . . . . . . . . . . . . . . .8W-40-7, 8, 9 Headlamp Switch . . . . . . . . . . . . . . . . . . .8W-40-3, 6, 7, 8 Headlamp Dimmer Switch . . . . . . . . . . . . . . . . . . .8W-40-6 Ignition Switch . . . . . . . . . . . . . . . . . . . . . .8W-40-4, 5, 8 Instrument Cluster . . . . . . . . . . . . . . . . . . .8W-40-3 thru 9 Panel Lamp Dimmer Switch . . . . . . . . . . . . . .8W-40-3, 7, 8 Park Brake Switch . . . . . . . . . . . . . . . . . . . . . . . .8W-40-5 Powertrain Control Module . . . . . . . . . . . . . . . . .8W-40-4, 5
J
8W-41 HORN/CIGAR LIGHTER— YJ VEHICLES
8W - 41 - 1
HORN/CIGAR LIGHTER HORN
CIGAR LIGHTER
The horn system uses a switch and horn relay. The horn switch is in the center of the steering wheel. Circuit A4 from fuse 8 in the Power Distribution C en t e r (P D C ) fe ed s ci r cu i t F 3 1 t h r o u gh fu s e 1 5 i n the PDC. Circuit F31 is HOT at all times and powers the coil and contact sides of the horn relay. W h en t h e ca s e g r ou n d e d h or n s w it ch i s p r e s s ed , circuit X3 provides ground for the coil side of the relay and the contacts close. When the contacts close, circuit X2 supplies voltage t o th e horn. Circuit Z1 provides ground for the horn.
In the ACCESSORY or RUN position, the ignition switch supplies voltage to fuse 7 in the fuse block on circuit A31. Fuse 7 feeds circuit F30 which connects t o t h e ci ga r l ig h t er . W h e n t h e l ig h t er i s d ep r e ss e d, the conta cts inside of the lighter element close a nd voltage flows to gr oun d on circuit Z1.
HELPFUL INFORMATION The horn switch is grounded to th e steering wheel. C ir cu i t F 3 1 i s d o u bl e c r im p e d a t t h e coi l s i d e o f the horn relay. Check fuse 8 in the PDC and fuse 15 in the fuse block.
DIAGRAM INDEX
HELPFUL INFORMATION In the ACCESSORY or RUN position, the ignition switch connects circuit A1 from fuse 4 in the PDC with circuit A31. Circuit F30 also powers the radio and radio relay. •
•
• •
•
Component Page Cigar Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-41-3 Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-41-3 Fuse 8 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-41-2 Fuse 11 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-41-2 Fuse 7 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-41-3 Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-41-2 Horn Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-41-2 Horn Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-41-2 Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . .8W-41-3
J
8W-42 AIR CONDITIONING/HEATER—YJ VEHICLES
8W - 42 - 1
AIR CONDITIONING/HEATER CONTENTS
page
page
HEATER AND AIR CONDITIONING . . . . . . . . . . . 2
HEATER SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL INFORMATION This section of the wiring diagrams is divided into two sub-sections; Heater, and A/C-Heater. When referring to the circuit descriptions or wiring diagrams, ensure that you use the correct sub-section.
HEATER SYSTEM
HEATER In the RUN position, the ignition switch connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) to circuit A22. Circuit A22 powers a bus bar in the fuse block that supplies voltage to circuit C1 through fuse 12. A heater-off switch in circuit C1 opens when the heater controls are in the VENT position. When the heater-off switch closes, circuit C1 supplies battery voltage to the blower motor switch. The switch sets b low er m ot or s p ee d t o H I G H , M E DI U M , L O W or OFF. The switch connects t o th e blower motor resistor b lock i n t h e L OW a n d M E DI U M p os it i on s a n d d irectly to t he blower motor in the HIGH position. The resistor block contains two resistors connected in ser i es . C ir cu i t C 7 con n e ct s t h e r e s is t or b lock t o t h e blower motor. From the blower motor resistor block, circuit C7 is double crimped at the HIGH terminal of the blower motor switch. Circuit C7 continues to the blower motor from the blower motor switch. When the blower motor switch is in the LOW position, it supplies voltage t o t he resistor block on circuit C4. From circuit C4, voltage passes through both resistors in the resistor block to the blower motor on circuit C7.
I n t h e M E D IU M p os it i on , t h e b low er m ot or s u p plies voltage to the resistor block on circuit C5. From circuit C5 voltage flows through one resistor to the blower motor on circuit C7. In the HIGH position, the blower motor switch connects directly to the blower motor on circuit C7. Voltage does not pass through the resistor block. Circuit Z1 provides ground for the blower motor.
HELPFUL INFORMATION Check fuse 4 in the PDC. Check fuse 12 in the fuse block. • •
DIAGRAM INDEX Component Blower Motor . . . . . . . . . . . . . . . . . . . . . . . . . . Blower Motor Resistor . . . . . . . . . . . . . . . . . . . . Blower Motor Switch . . . . . . . . . . . . . . . . . . . . . Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . Fuse 12 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . Heater Switch . . . . . . . . . . . . . . . . . . . . . . . . . . Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . .
Page .8W-42-3 .8W-42-3 .8W-42-3 .8W-42-3 .8W-42-3 .8W-42-3 .8W-42-3
8W - 42 - 2
8W-42 AIR CONDITIONING/HEATER—YJ VEHICLES
J
AIR CONDITIONING AND HEATER
GENERAL INFORMATION On vehicles built with the 2.5L engine, the electrical system has provisions for dealer installed air conditioning. The provisions consist of two connectors which include circuitry for: Circuit C1 - Ignition feed • Circuit C21 - Blower motor switch • Circuit C91 - A/C request signal • Circuit C20 - A/C select signal • Circuit C13 - Ground for coil side of A/C compres• sor clutch relay Circuit G5 - Battery voltage for coil side of A/C • compressor clutch relay
A/C COMPRESSOR When the ignition switch is in the RUN position it connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) to circuit A22. Circuit A22 supp li es b a t t e r y v ol t a ge t o fu s e 1 2 i n t h e fu s e b lock . Fuse 12 powers circuit C1. C ir cu it C 1 s u pp lie s b a t t er y volt a ge t o t h e A/C blower switch. Circuit C21 connects the A/C blower switch to t he A/C low pressure switch. When the operator selects A/C operation, the A/C blower switch provides the A/C request signal to cavity 27 of th e Powertrain Control Module (PCM) on circuit C91. At the same time, the blower switch supplies voltage th rough the A/C thermostat to circuit C21. Circuit C21 su pplies voltage t o t he A/C low press u r e s wit ch . Wh e n t h e A/C low p r es su r e s wit ch cl os e s, ci r cu i t C 20 p r ov id e s b a t t e r y v ol t a ge t o t h e contact side of th e A/C compressor clutch relay a nd p r ov id e s t h e A/C s e le ct s ig n a l t o t h e P C M. C ir cu i t C20 is double crimped at the contact side of the relay. The C20 circuit branch from t he relay supplies the A/C select input to cavity 28 of the PCM. After receiving the A/C request signal, the PCM energizes t he A/C compr essor clutch relay by providing ground for the coil side of the relay on circuit C13. Circuit C13 connects t o cavity 34 of th e PCM. Circuit G5 from fuse 9 in the fuse block supplies voltage to the coil side of the relay. In the START or RUN positions the ignition switch connects circuit A1 from fuse 4 in the PDC with circuit A21. Circuit A21 connects to the fuse block bus bar that powers circuit C5 through fuse 9. Wh e n t h e P C M e n er gi ze s t h e A/C com p r es sor cl u t ch r e la y, t h e r e la y s w it ch e s fr om i t s n or m a l ly grounded position to connect circuit C20 to circuit C3. Circuit C3 su pplies voltage to the case grounded A/C compressor clutch.
HELPFUL INFORMATION Circuit G5 is double crimped at the coil side of the A/C compressor clutch relay. The G5 branch from the relay continues to the back-up lamp switch. Circuit Z1 provides ground for the A/C compressor clu t ch r ela y w hen t h e r ela y is in it s n or m a lly grounded position. •
•
A/C-HEATER BLOWER MOTOR When the ignition switch is in the RUN position it connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) to circuit A22. Circuit A22 supp li es b a t t e r y v ol t a ge t o fu s e 1 2 i n t h e fu s e b lock . Fuse 12 powers circuit C1. C ir cu it C 1 s u pp lie s b a t t er y v ol ta ge t o t h e A/C blower switch. In th e LOW position, the A/C blower switch su pplies voltage to th e low speed brush of the blower motor. In the MEDIUM position, the switch s u p p li es v ol t a ge t o t h e m e d iu m s p ee d b u s h of t h e blower motor. In the HIGH position, the switch supp li es v ol t a ge t o t h e h i gh s p ee d b r u s h of t h e b low er motor. The blower motor has a field jumper. The ground ci r cu i t for t h e b low er m ot or con n e ct s t o t h e ci ga r light er. Circuit Z1 provides groun d for t he blower motor and the cigar lighter.
HELPFUL INFORMATION Check fuse 4 in the PDC. Check fuse 12 in the fuse block. • •
DIAGRAM INDEX Component Page A/C Compressor Clutch . . . . . . . . . . . . . . . . . . . . .8W-42-4 A/C Compressor Clutch Relay . . . . . . . . . . . . . . . .8W-42-4 A/C Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . .8W-42-5 Blower Motor . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-42-5 Blower Motor Switch . . . . . . . . . . . . . . . . . . . . . .8W-42-5 Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . .8W-42-4, 6 Fuse 7 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-42-6 Fuse 9 (Fuse Block) . . . . . . . . . . . . . . . . . . . . .8W-42-4, 6 Fuse 12 (Fuse Block) . . . . . . . . . . . . . . . . . . . .8W-42-4, 6 Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . .8W-42-4, 6 Powertrain Control Module . . . . . . . . . . . . . . . . .8W-42-4, 6
J
8W- 44 I NTERI OR LI GHTI NG— YJ YJ VEHI CLES
8W - 44 - 1
INTERIOR LIGHTING INDEX page Accessory Access ory Lamp Lamp and and Heater Heater Contr Control ol Panel Panel Lamp Lamp . Comb Co mbina inati tion on Buzz Buzzer er . . . . . . . . . . . . . . . . . . . . . . . Courte Cou rtesy sy Lamps Lamps and Dome Dome Lamps Lamps . . . . . . . . . . . . Diag Di agra ram m Inde Index x ...........................
. . . .
1 1 1 2
GENERAL INFORMATION Circuit M1 supplies power to the underhood lamp, d om om e l a m p , r i gh gh t cou r t e s y l a m p a n d l ef eft cou r t e s y la m p . F u s e 1 2 in t h e P ow ow er er D is is t r ib ib u t io ion C en en t e r (PDC) protects circuit M1. Circuit A4 from fuse 8 in the PDC supplies voltage to fuse 12 and circuit M1. Fuse 12 is referred referred to as the Igni Ignitio tion n Of Offf Draw (IOD) fuse.
COURTESY LAMPS AND DOME LAMPS C ir ir cu cu i t M 1 s u p p li li es es b a t t e r y v ol ol t a ge ge t o t h e d om om e lamps and the right and left courtesy lamps. Circuit M2 provides ground for the lamps through either the ca s e g r ou ou n d e d d oo oor ja m b s w it it ch ch e s or t h r o u gh gh t h e dimmer switch to circuit Z1. I n t h e O N p os os it it i on on , t h e d im im m e r s w it it ch ch con n e ct ct s ci r cu cu i t M 2 t o g r ou ou n d on ci r cu cu i t Z1 . W h en en a d oo oor opens, the case grounded door jamb switch closes and provides ground for the lamps on circuit M2.
HELPFUL INFORMATION Circuit M1 also supplies voltage for radio memory, underhood lamp and the ABS data link connector. •
UNDERHOOD LAMP Circuit M1 supplies battery voltage for the underhood hoo d lamp. A mercury mercury swi switch tch in seri series es a fter the lamp connects the lamp to ground on circuit Z1. When the hood is raised, mercury inside the switch moves to a position where it connects circuit M1 to circuit Z1, illuminating the lamp. The underhood lamp is wired in parallel with other components on circuit M1.
ACCESSORY LAMP AND HEATER CONTROL PANEL LAMP C ir ir cu cu i t E 1 fr om om t h e d im im m e r s w it it ch ch s u p p li li es es b a t t e r y v ol ol t a ge ge t o f u s e 1 0 i n t h e fu s e b lo lock w h e n t h e dimmer switch is in the LOW or ON position. Fuse 1 0 p r ot ot e ct ct s ci r cu cu i t E 2 w h ic ich s u p p li li es es p ow ow er er t o t h e h e a t e r con t r o l p a n e l l a m p a n d t h e a cc cce ss ss or or y l a m p . Circuit Z1 provides ground for each lamp.
TRANSMISSION RANGE LAMP C ir ir cu cu i t E 1 fr om om t h e d im im m e r s w it it ch ch s u p p li li es es b a t t e r y v ol ol t a ge ge t o f u s e 1 0 i n t h e fu s e b lo lock w h e n t h e
pa ge Genera Gene rall Infor Informa mati tion on . . . . . . . . . . . . . . . . . . . . . . . . 1 Tra rans nsmi miss ssio ion n Range Range Lamp Lamp . . . . . . . . . . . . . . . . . . . 1 Unde Un derh rhoo ood d Lamp Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . 1
dimmer switch is in the LOW or ON positions. Fuse 1 0 p r ot ot e ct ct s ci r cu cu i t E 2 w h ic ich s u p p li li es es p ow ow er er t o t h e tran smiss smissio ion n range lamp. The lamp is case case grounded.
COMBINATION BUZZER The combination buzzer module sounds an audible warning tone. The tone sounds for seat belt warning and when the key is in the ignition switch while the drivers door is open. The tone also sounds when the ignition switch is in the ON position while the drivers side seat belt is not buckled. Refer to Group 8U for buzzer operation. Fuses 3 and 9 in the fuse block protect the combination buzzer. Fuse 3 powers circuit F32 which conn e ct ct s t o t h e b u zz zz er er . C ir ir cu cu i t A 6 f r om om fu s e 3 i n t h e Powerr Dis Powe Distributio tribution n Center (PDC) supplies supplies po power wer to the fuse block for circuit F32. Circui Ci rcuitt G5 from from fuse 9 also provi provides des voltage voltage to t he com b in in a t i on on b u zz zz er er w h e n t h e i gn gn i t io ion s w it it ch ch i s i n the START or RUN position. The ignition switch conn e ct ct s ci r cu cu i t A 1 fr om om fu s e 4 i n t h e P D C t o c ir ir cu cu i t A21. Circuit A21 connects to the fuse block. When the keykey-in in swi switch tch clo loses, ses, it connects circ ircuit uit G26 to circuit G16. Circuit G16 connects to the drivers side door jamb switch. When the drivers side door i s op en en a n d t h e k ey e y -i -i n s wi wit ch ch is clos ed e d , t h e ca s e g r ou ou n d ed ed d oo oor ja m b s wi w it ch ch clos es es a n d s u pp p p li li e s ground for the buzzer. Circuit G26 from the combination buzzer connects to the key-in switch. Circui Ci rcuitt G13 fo form the buzz buzzer er po powers wers th e seat bel beltt w a r n i n g l a m p i n t h e i n st st r u m e n t cl u st st e r. r. C ir ir cu cu i t Z1 a t t h e in s t r u m en en t clu s t er er p r ov ovi de de s gr ou ou n d for t h e lamp. C ir ir cu cu i t G 10 10 fr om om t h e b u zz zz er er con n e ct ct s t o t h e s e a t belt switch. When the seat belt is unlatched, the seat belt switch clo loses ses provi providing ding ground on circuit circuit Z1. C ir ir cu cu i t Z1 a l so so g r ou ou n d s t h e com b in in a t i on on b u zz zz er er module.
HELPFUL INFORMATION Circuit F32 also powers the stop lamp switch. Circuit G5 also provides power for the instrument cluster gauges and warning lamps, heated rear window relay and A/C compressor clutch relay. On Cana• •
8W - 44 - 2
8W- 44 I NTERI OR LI GHTI NG— YJ YJ VEHI CLES
d ia ia n v eh eh i cl cl es es , ci r cu cu i t G 5 a l so so p ow ow er er s t h e D a yt yt i m e Running Lamps (DRL DRL)) m odule.
J
DIAGRAM INDEX Component Page Com ombi bin natio tion n Buz Buzzer . . . . . . . . . . . . . . . . . . . . . . .8W-44-5 Court rte esy Lam Lamps . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-4 Dome La Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-4 Door Jamb Sw Switc itch hes . . . . . . . . . . . . . . . . . . . . . .8W-44-4 Fuse 3 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . . .8W-44-5 .8W-44-5 Fuse 3 (PD (PDC) . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-3, 5 Fuse 4 (PD (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-5 Fuse 8 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . . .8W-44-3 Fuse 8 (PD (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-4 Fuse 9 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . . .8W-44-5 Fuse 10 (Fuse Blo Bloc ck) . . . . . . . . . . . . . . . . . . . . . .8W-44-3 Fuse 12 12 (PD (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-4 Headlamp Switch . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-3 Ign Ig nit itio ion n Sw Swit itc ch . . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-5 Illu Ill umin ina atio tion n Lam Lamps . . . . . . . . . . . . . . . . . . . . . . .8W-44-3 Key-I -In n Sw Swit itc ch . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-5 .8W-44-5 Pane nell La Lamp mp Dimm Dimme er Switc witch h . . . . . . . . . . . . . . . .8 .8W W-44-3, 4 Seat Belt Sw Switc itch h . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-5 Underhood Lamp . . . . . . . . . . . . . . . . . . . . . . . . .8W-44-4
J
8W-47 AUDIO SYSTEM— YJ VEHICLES
8W - 47 - 1
RADIO RADIO MEMORY Circuit M1 from the Ignition Off Draw (IOD) fuse i n t h e P ow er D is t r ib u t ion C en t e r (P D C ) s u p p li es p ow er for t h e r a d io m e m or y. T h e I OD fu s e is r e moved during vehicle shipping to prevent excessive battery draw. Circuit A4 from fuse 8 in the PDC supplies voltage to the IOD fuse in cavity 12. Circuit A4 is HOT a t all times.
RADIO ILLUMINATION Circuit E2 supplies battery voltage to the radio illu m in a t ion la m p s w h en t h e h e a dla m p s or p a r k in g lamps are ON and the dimmer switch is in the LOW or ON positions. Circuit E22 supplies bat tery voltage for the radio clock and station frequency display. Circuit E22 originates at the radio illumination relay and is fed by e it h e r ci r cu i t F 3 0 or ci r cu i t E 2 d e pe n d in g on t h e switch position inside the relay. When the headlamps and parking lamps are OFF, the radio illumination relay is in its normal At-Rest position. In the At Rest position, the relay connects circuit F30 from fuse 7 in the fuse block to circuit E22. When the headlamps or parking lamps are ON, circu i t L 7 fr om t h e h e a d la m p s w it ch s u p p li es b a t t e r y voltage t o th e coil side of th e r adio illumin ation relay. Circuit Z1 provides ground for the coil side of the relay. When voltage is present on circuit L7, the radio illumination relay switches from its at rest position to connect circuit E2 to circuit E22.
HELPFUL INFORMATION Circuit A31 supplies voltage to the fuse block for ci r cu i t F 3 0 w h e n t h e i gn i t ion s w it ch i s i n t h e A CCESSORY or RUN positions. In these positions the ignition switch connects circuit A1 from fuse 4 in the PDC to circuit A31. Circuit A31 powers a bus bar in the fuse block that feeds circuit F30 through fuse 7. Circuit A6 from fuse 3 in the PDC supplies power to t he fuse block for fuse 8. Fu se 8 protects circuit F33. When the headlamps or parking lamps are ON, •
•
the headlamp switch connects circuit F33 to circuit L 7. Wh e n t h e a d ju s t a bl e d i m me r s wit ch is in t h e LOW to ON positions, it connects circuit L7 to circuit E1. Circuit E1 powers fuse 10 in the fuse block. Fuse 10 in the fuse block protects circuit E2.
SPEAKERS Circuit X53 feeds the speaker on the left side of the instrument panel. Circuit X55 is the return from the speaker to the radio. C ir cu it X5 4 fe ed s t h e r igh t in s tr u m en t p a ne l speaker. Circuit X56 is the return from th e speaker t o t h e r a d i o. T h e s p e a k e r fe ed a n d r e t u r n ci r cu i t s a r e d ou b le cr im p ed a t t h e fr on t s p ea k e rs a n d con t in u e t o t h e connector for the rear speakers. If the vehicle is not equipped with the rear speaker sound bar, a jumper is installed in the harness to simulate rear speaker load. Circuit X51 feeds the left rear speaker. Circuit X57 is the return from the speaker to the radio. C ir cu i t X5 2 fe ed s t h e r i gh t r e a r s p ea k e r. C ir cu i t X58 is the return from the speaker to the radio.
DIAGRAM INDEX Component Page Fuse 3 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-47-3 Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-47-2 Fuse 7 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-47-2 Fuse 8 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-47-3 Fuse 8 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-47-2 Fuse 10 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . .8W-47-3 Fuse 12 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-47-2 Headlamp Switch . . . . . . . . . . . . . . . . . . . . . . . . .8W-47-3 Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . .8W-47-2 Left Front Speaker . . . . . . . . . . . . . . . . . . . . . . . .8W-47-4 Left Rear Speaker . . . . . . . . . . . . . . . . . . . . . . . .8W-47-5 Panel Lamp Dimmer Switch . . . . . . . . . . . . . . . . . .8W-47-3 Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-47-2, 3, 4 Radio Illumination Relay . . . . . . . . . . . . . . . . . . . .8W-47-2 Right Front Speaker . . . . . . . . . . . . . . . . . . . . . . .8W-47-4 Right Rear Speaker . . . . . . . . . . . . . . . . . . . . . . .8W-47-5
J
8W-48 HEATED REAR WINDOW— YJ VEHICLES
8W - 48 - 1
HEATED REAR WINDOW HEATED REAR WINDOW T h e h e a t e d r e a r w in d ow r e la y s u p p li es p ow er t o heated rear window grid. When the operator presses t h e h e a t e d r e a r w in d ow s w it ch , t h e con t a c t s i n si de the switch momentarily close and circuit C16 conn e ct s t h e r e la y t i m er t o g r ou n d on ci r cu i t Z1 . T h i s ca u s e s t h e r e la y t o c h a n g e s t a t e a n d com p le t e a ci r cu i t t o e n e r g iz e t h e coi l s id e of t h e r e la y a n d s t a r t t h e r e la y t i m er . C ir cu i t G 5 f r om fu s e 9 i n t h e fu s e block supplies voltage to the coil side of t he relay. Circuit Z1 provides ground for the relay. When the heated rear window relay energizes, the contacts inside the relay close and connect circuit F32 to circuit C15. Fuse 3 in the fuse block protects circuit F32. C ir cu i t C 15 i s d o u bl e c r im p e d a t t h e h e a t e d r e a r window relay. One branch of circuit C15 powers the i n di ca t o r l a m p i n t h e h e a t e d r e a r w in d ow s w it ch . T h e ot h e r b r a n ch of c ir cu i t C 15 p ow er s t h e h e a t e d rear window grid. Circuit Z1 provides ground for the heated rear window grid. At the rear window grid, circuits C15 and Z1 pass through lift gate support struts.
HELPFUL INFORMATION When the ignition switch is in the START or RUN positions, it connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) to circuit A21. Circuit A21 supplies battery voltage t o t he fuse block b u s b a r t h a t p ow er s ci r cu i t G 5 t h r o u gh t h e fu s e i n cavity 9. Circuit A6 from PDC fuse 3 supplies battery voltage to the fuse block bus bar that feeds fuse 3 and circuit F32. Check fuse 3 in the PDC and fuse 3 in the fuse block. Check for broken grid lines on the window. Check for a broken bus bar or disconnected leads at the rear window. Check for a good ground. •
•
• •
•
DIAGRAM INDEX Component Fuse 3 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . Fuse 6 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . Fuse 9 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . Heated Rear Window Relay . . . . . . . . . . . . . . . . . Heated Rear Window Grid . . . . . . . . . . . . . . . . . . Heated Rear Window Switch . . . . . . . . . . . . . . . .
Page .8W-48-2 .8W-48-2 .8W-48-2 .8W-48-2 .8W-48-2 .8W-48-3 .8W-48-3
J
8W-50 FRONT LIGHTING— YJ VEHICLES
8W - 50 - 1
FRONT LIGHTING INDEX page
page
Daytime Running Lamp (DRL) Module—Canadian Vehicles Only . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Diagram Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Parking Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
HEADLAMPS T h e h e a dla m p s wi tch h a s t h r e e p os it ion s : O N , PARK (parking lamps) and OFF. Two circuits, L2 and L 20 , c on n e ct t h e h e a d la m p s w it ch t o t h e h e a d la m p dimmer/optical horn switch. The dimmer switch feeds t h e l ow a n d h i gh b ea m s of t h e h e a d la m p s .
HEADLAMP SWITCH IN OFF OR PARKING LAMP POSITION Circuit A3 from fuse 7 in the Power Distribution C en t e r (P D C ) s u p p li es b a t t e r y v ol t a ge t o t h e h e a d l a m p s w it ch . T h e h e a d l a m p s w it ch h a s a n i n t er n a l ci r cu i t b r e a k er t h a t con n e ct s ci r cu i t A3 t o ci r cu i t L 20 . T h e s w it ch con n e ct s ci r cu i t A3 t o ci r cu i t L 2 when the headlamps are ON. Circuit L20 connects to the dimmer switch. Circuit L20 powers the high beams of the head lamps on circu it L 3 w h en t h e op er a t or fla s h es t h e h e a dla m p s with the turn signal stalk. HEADLAMP SWITCH IN ON POSITION When the headlamp switch is in the ON position, the A3 circuit from t he PDC connects t o circuit L2. Circuit L2 connects to circuit L4 through the dimmer switch. Circuit L4 powers the low beam of the headlamps. W h en t h e op e r a t or s el ect s h i gh b ea m op e r a t ion w it h t h e t u r n s ig n a l s t a l k , t h e d im m e r s w it ch con nects circuit L20 t o circuit L3. Circuit L3 supplies battery voltage to the high beams. HEADLAMP GROUND Although circuit Z1 provides ground for both the right and left headlamps, it h as different termination points for each. For the right headlamp, the Z1 circuit terminates at the radiator right support. For the l eft h e a d la m p , t h e Z1 ci r cu i t t e r m in a t e s a t t h e l eft radiator support. HELPFUL INFORMATION Check fuse 7 in the PDC. T he h ea d la m p s wit ch h a s a n in t er n a l cir cu it breaker. F or t h e l eft fr on t p a r k in g l a m p , t u r n s ig n a l, s id e mark er lamp, headlamp, and fog lamp, circuit Z1 terminates at the left radiator support. • •
•
For the right front parking lamp, turn signal, side marker lamp, headlamp, an d fog lamp, circuit Z1 terminates at the right radiator support. •
PARKING LAMPS Circuit A6 from fuse 3 in the Power Distribution Center (PDC) connects to the fuse block bus bar that powers circuit F33. Fuse 8 in the fuse block protects ci r cu i t F 3 3 . C i r cu i t F 3 3 con n e ct s t o t h e h e a d la m p switch. T h e h e a dla m p s wit ch h a s t h r e e p os it ion s : O N , P AR K (p a r k in g la m p s) a n d O F F, p lu s a d im m er switch. When th e h eadlamp switch is in t he PARK or ON position, the switch connects circuit F33 to circu it L 7. F r om t h e h ea d la m p s wit ch , cir cu it L 7 branches to power the front parking lamps, rear tail lamps, and side marker lamps. Circuit L7 also powers the park lamp relay, if equipped with fog lamps.
GROUND CIRCUIT F or t h e l eft fr on t p a r k i n g l a m p , t u r n s ig n a l, s id e marker lamp, headlamp, an d fog lamp, circuit Z1 terminates at the left radiator support. For the right front parking lamp, turn signal, side marker lamp, headlamp, an d fog lamp, circuit Z1 terminates at the right radiator support. •
•
HELPFUL INFORMATION Check fuse 3 in the PDC. Check fuse 8 in the fuse block. Circuit L7 also feeds the radio, if equipped. • • •
FOG LAMPS T h e fog la m p s a r e con t r olle d b y t h e fog la m p s w it ch a n d t w o r e l a ys . T h e fog l a m p s op e r a t e on l y when the headlamp switch is in the ON position, and the operator has selected low-beam operation. When t h e h e a d la m p s a r e i n h i gh -b ea m op e r a t ion , t h e fog lamps will not operate. When the headlamps or parking lamps are ON, circu i t L 7 f r om t h e h e a d la m p s w it ch s u p p li es b a t t e r y voltage to the coil side of the park lamp relay. When the operator presses the fog lamp switch, it provides ground for the coil side of the park lamp relay. This energizes the relay.
8W - 50 - 2
8W-50 FRONT LIGHTING— YJ VEHICLES
J
When the park lamp relay energizes, the relay contacts close and connect circuit F81 from fuse 6 in the fuse block to circuit L36. Circuit L36 connects to the contact side of th e high beam relay. The conta cts in t h e h igh b ea m r e la y a r e n or m a lly clos ed . B a t t er y v ol t a ge fl ow s t h r ou g h h i gh b ea m r e la y t o t h e fog lamps on circuit L39. Circuit L39 also splices to the lamp in the fog lamp switch. Circuit L3 from the dimmer switch provides power for the high beams of the headlamps and connects to Circuit G34. Circuit G34 powers the coil side of the high beam relay. Circuit Z1 provides ground for the coil. When the operator selects high beam operation or flashes t he optical horn, circuit G34 energizes the h ig h b ea m r e la y. Wh e n e n er giz ed , t h e n or m a lly closed contacts in the relay open, shutting off battery voltage to the fog lamps on circuit L39.
module provides power for the high beam indicator lamp in the instrument cluster. Circuit L4 feeds th e low beams of the headlamps. W h en t h e h e a d la m p s w it ch i s i n t h e O F F p os it i on , the DRL module powers the left and right headlamps on circuit L4. When the headlamps are ON, the dimmer switch powers the low beams on circuit L4. Circuit L3 feeds the high beams of the headlamps. When the operator flashes the high beams with the turn signal stalk, the DRL senses voltage on circuit L 3. W h en i t s e n se s v ol t a ge on ci r cu i t L 3, t h e D R L module stops su pplying power to th e low beams on circuit L4. Circuit Z1 provides ground for the DRL module. C ir cu i t Z1 t e r m in a t e s a t t h e r a d i a t or l eft s id e s u p port.
HELPFUL INFORMATION Circuit A6 from fuse 3 in the PDC supplies voltage to the fuse block for fuses in cavities 3 and 6. Fuse 6 in the fuse block protects circuit F81 which powers the contact side of the park lamp relay. In the high beam position, the dimmer switch connects circuit L20 from the headlamp switch to circuit L3. The headlamp switch connects circuit A3 from fuse 7 in the PDC with circuit L20. Circuits A3 and L20 are HOT at all times.
DIAGRAM INDEX
•
•
DAYTIME RUNNING LAMP (DRL) MODULE— CANADIAN VEHICLES ONLY On Canadian vehicles, the low-beam headlamps operate when the ignition switch is in the RUN position and the headlamp switch is OFF. When the ignition switch is in the START or RUN positions, circuit A1 from fuse 4 in the Power Distribution Center (PDC) conn ects to circuit A21. Circuit A21 supplies voltage to circuit G5 through fuse 9 in the fuse block. Circuit G5 splices to supply bat tery voltage to the DRL module. Circuit L20 from the headlamp switch connects to the DRL module. Circuit L20 is HOT at all times. The DRL module receives the vehicle speed sensor i n pu t fr om ci r cu i t G 7. C ir cu i t G 34 fr om t h e D R L
Component Page Daytime Running Lamp (DRL) Module . . . .8W-50-3, 7, 9, 11 Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-50-9 Fog Lamp Switch . . . . . . . . . . . . . . . . . . . . . . . .8W-50-9 Fuse 3 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-50-3 Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . .8W-50-10 Fuse 6 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-50-8 Fuse 7 (PDC) . . . . . . . . . . . . . . . . . . . . . . . .8W-50-3, 10 Fuse 8 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-50-3 Fuse 9 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . .8W-50-10 Headlamp Switch . . . . . . . . . . . . . . . . . . . .8W-50-3, 8, 10 Headlamp Dimmer Switch . . . . . . . . . . . . . . . . .8W-50-3, 8 High Beam Relay . . . . . . . . . . . . . . . . . . . . . . . . .8W-50-9 Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . .8W-50-10 Instrument Cluster . . . . . . . . . . . . . . . . . .8W-50-3 thru 10 Left Headlamp . . . . . . . . . . . . . . . . . . . . . . . . .8W-50-4, 6 Left Park, Turn Signal Lamp . . . . . . . . . . . . . . .8W-50-4, 6 Left Side Marker Lamp . . . . . . . . . . . . . . . . . . .8W-50-4, 6 Park Lamp Relay . . . . . . . . . . . . . . . . . . . . . . . . .8W-50-8 Powertrain Control Module . . . . . . . . . . . . . . . . . .8W-50-11 Right Headlamp . . . . . . . . . . . . . . . . . . . . . . . .8W-50-5, 7 Right Park, Turn Signal Lamp . . . . . . . . . . . . . .8W-50-5, 7 Right Side Marker Lamp . . . . . . . . . . . . . . . . . .8W-50-5, 7
J
8W-51 REAR LIGHTING— YJ VEHICLES
8W - 51 - 1
REAR LIGHTING TAIL LAMPS AND LICENSE PLATE LAMPS Circuit A6 in the Power Distribution Center (PDC) con n e ct s t o a b u s b a r in t h e fu s e b lock . T h e f u se block bus bar powers circuit F33. Circuit F33 conn e ct s t o t h e h e a dla m p s wit ch . F u s e 3 i n t h e P D C protects circuit A3. Fuse 8 in the fuse block protects circuit F33. T h e h e a dla m p s wi tch h a s t h r e e p os it ion s : O N , P AR K (p a r k in g la m p s) a n d O F F, p lu s a d im m e r switch. When th e headlamp switch is in the PARK or ON position, the switch connects circuit F33 to circu it L 7. F r om t h e h ea d la m p s wit ch , cir cu it L 7 branches to power the front parking lamps and rear t a il a n d l ice n se p la t e la m p s. T h e la m p s a r e ca s e grounded.
HELPFUL INFORMATION If the vehicle is equipped with factory installed fog lamps, circuit L7 splices to feed the park lamp relay. J u m p e r h a r n e s s es con n e ct t h e t a i l, s t op , t u r n s ig nal lamp to the body harness. Check fuse 3 in the PDC. Check fuse 8 in the fuse block. Circuit L7 also feeds the radio, if equipped. •
•
• • •
STOP LAMPS AND CHMSL LAMPS Circuit A6 from fuse 3 in the Power Distribution Center (PDC) supplies voltage to the fuse block bus bar. The bus bar powers circuit F32 through fuse 3 in the fuse block. Circuit F32 connects t o th e stop lamp switch. When the operator depresses the brake pedal, the stop lamp switch closes, and connects circuit F32 to cir cu it L 50 . C ir cu it L 50 con n e ct s t o t h e C H MS L lamps and turn signal/hazard flasher. Circuit Z1 provides ground for the CHMSL lamps. The turn signal/ h a z a r d fl a sh e r s u p p li es cu r r e n t t o t h e L 62 a n d L 63 circuits. Circuit L62 powers the right stop lamp. Circu i t L 63 p ow er s t h e l eft s t op l a m p. T h e s t o p l a m p s are case grounded.
HELPFUL INFORMATION Circuits L50 and Z1 pass through contacts in the rear door before reaching the CHMSL lamps. Check fuse 3 in the PDC. •
•
Check fuse 3 in the fuse block. for continuity across the stop lamp switch • Check when it is closed. vehicle is equipped with anti-lock brakes, • If th e circuit L50 connects to the ABS module. •
BACK-UP LAMPS In the START or RUN position, the ignition switch connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) to circuit A21. Circuit A21 feeds a b u s b a r i n t h e f u s e b lock t h a t p ow er s ci r cu i t G 5 through fuse 9. Circuit G5 splices to su pply power to t he back-up lamp switch. On automatic transmission vehicles, the back-up lamp switch is part of an assembly that includes the PARK/NEUTRAL position switch. Wh e n t h e op er a t or p u t s t h e t r a n s m is sion in R everse, the back-up lamp switch connects circuit G5 to cir cu it L 1. C ir cu it L 1 fe ed s t h e ca s e gr ou n de d back-up lamps.
HELPFUL INFORMATION Check fuse 4 in the PDC. Check fuse 9 in the fuse block. C h eck for con t in u it y a cr os s t h e b a ck -u p la m p switch when it is closed. • • •
DIAGRAM INDEX Component ABS Control Module . . . . . . . . . . . . . . . . . . . . . Back-Up Lamps . . . . . . . . . . . . . . . . . . . . . . . . . Back-Up Lamp Switch . . . . . . . . . . . . . . . . . . . . Center High Mounted Stop Lamps (CHMSL) . . . . . . Fuse 3 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . Fuse 3 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . Fuse 9 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . Fuse 8 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . Headlamp Switch . . . . . . . . . . . . . . . . . . . . . . . . Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . Powertrain Control Module . . . . . . . . . . . . . . . . . Stop Lamp Switch . . . . . . . . . . . . . . . . . . . . . . . Tail, Stop, and Turn Signal Lamps . . . . . . . . . . . .
Page .8W-51-3 .8W-51-4 .8W-51-2 .8W-51-3 .8W-51-2 .8W-51-2 .8W-51-2 .8W-51-2 .8W-51-2 .8W-51-2 .8W-51-2 .8W-51-3 .8W-51-3 .8W-51-4
J
8W-52 TURN SIGNALS— YJ VEHICLES
8W - 52 - 1
TURN SIGNALS TURN SIGNALS In the ACCESSORY or RUN position, the ignition switch connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) to circuit A31. Circuit A31 feeds circuit L5 through fuse 4 in the fuse block. Circuit L5 powers the turn signal flasher. Circuit L6 from the flasher connects to the turn signal/hazard flasher switch which supplies current to the turn s ig n a ls . T h e s w it ch con n e ct s t o t h e t u r n s ig n a l a n d s id e m a r k er l am p s on cir cu it s L 60 , L 61 , L 62 a n d L63.
RIGHT TURN SIGNAL When the operator selects the right turn signal, the t u r n s ig n a l/h a z a r d fl a sh e r s w it ch con n e ct s p ow er from circuit L6 to circuits L60 and L62. Circuit L62 fe ed s t h e r i gh t r e a r t u r n s ig n a l/h a z a r d fl a sh e r /s t op lamp. Circuit L60 feeds the right front t urn signal/hazard flasher lamp and side marker lamp. Circuit L60 also splices to power the turn signal indicator lamp on the instrument cluster. LEFT TURN SIGNAL When the operator selects the left turn signal, the t u r n s ig n a l/h a z a r d fl a sh e r s w it ch con n e ct s p ow er from circuit L6 to circuits L61 and L63. Circuit L63 fe ed s t h e l eft r e a r t u r n s ig n a l/h a z a r d fl a sh e r /s t op lamp. Circuit L61 feeds t he left front turn signal/hazard flasher lamp and side marker lamp. Circuit L61 also splices to power the turn signal indicator lamp on the instrument cluster. GROUND CIRCUIT Circuit Z1 provides a ground for the left front park a n d t u r n s ign a l l a m p , s id e m a r k e r la m p a n d h e a d lamp. The grounding point for circuit Z1 is the radiator left support. C ir cu i t Z1 p r ov id e s a g r ou n d for t h e r i gh t fr on t p a r k a n d t u r n s ig n a l la m p , s id e m a r k e r la m p a n d head lamp. The grounding point for circuit Z1 is the radiator right support. HELPFUL INFORMATION Check fuse 4 in the PDC. Check fuse 4 in the fuse block. • •
HAZARD FLASHERS C ir cu i t L 9 fr om fu s e 5 i n t h e P ow er D is t r i bu t i on Center (PDC) supplies power to th e h azard flasher. Circuit L19 from th e flasher connects to t he tur n signal/hazard flasher switch.
W h en t h e op e r a t or p r e ss e s t h e h a z a r d fl a s h er b u t t on , t h e t u r n s ig n a l/h a z a r d fl a sh e r s w it ch con n e ct s circuit L19 to circuits L60, L61, L62, and L63. Circuit L62 powers th e r ight rear turn signal/stop/haza r d la m p. C ir cu it L 63 p ow er s t h e le ft r ea r t u r n signal/stop/hazard lamp. Circuit L60 powers the right fr on t i n di ca t or l a m p. C ir cu i t L 61 p ow er s t h e l eft front lamp. Circuit L60 also splices to feed the instrument cluster right indicator lamp. Circuit L61 splices to feed the instrument cluster left indicator lamp.
GROUND CIRCUIT T h e r e a r t u r n s ig n a l/s t op /h a z a r d l a m p s a r e ca s e grounded. Circuit Z1 provides a ground for the left front park a n d t u r n s ign a l l a m p , s id e m a r k e r la m p a n d h e a d lamp. The grounding point for circuit Z1 is the radiator left support. Circuit Z1 provides a ground for the right left park a n d t u r n s ign a l l a m p , s id e m a r k e r la m p a n d h e a d lamp. The grounding point for circuit Z1 is the radiator right support. HELPFUL INFORMATION C h eck fu s e 5 i n t h e P D C.
DIAGRAM INDEX Component Page ABS Control Module . . . . . . . . . . . . . . . . . . . . . .8W-52-2 Fuse 3 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-52-2 Fuse 3 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-52-2 Fuse 4 (Fuse Block) . . . . . . . . . . . . . . . . . . . . . . .8W-52-2 Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-52-2 Fuse 5 (PDC) . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-52-2 Hazard Flasher . . . . . . . . . . . . . . . . . . . . . . . . . .8W-52-2 Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . .8W-52-2 Instrument Cluster Turn Signal Lamps . . . . . . . . . . .8W-52-3 Stop Lamp Switch . . . . . . . . . . . . . . . . . . . . . . . .8W-52-2 Turn Signal Flasher . . . . . . . . . . . . . . . . . . . . . . .8W-52-2 Turn Signal/Hazard Flasher Switch . . . . . . . . . . . . . .8W-52-3
J
8W-53 WIPERS— YJ VEHICLES
8W - 53 - 1
WIPERS INDEX page
page
Diagram Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Rear Wiper System . . . . . . . . . . . . . . . . . . . . . . . . . 1
Wipers—Intermittent . . . . . . . . . . . . . . . . . . . . . . . . 1 Wipers—Standard . . . . . . . . . . . . . . . . . . . . . . . . . . 1
WIPERS— STANDARD
W h en t h e op e r a t or m ov es t h e w ip e r s w it ch t o t h e L OW p os it i on , b a t t e r y v ol t a ge p a s s es t h r o u gh t h e switch to circuit V3. Circuit V3 feeds the wiper motor low s pe ed b r u sh e s. I f t h e op er a t or s ele ct s w ip er HIGH speed operation, the wiper switch passes current to circuit V4. Circuit V4 feeds th e wiper motor high speed brushes. The DELAY portion of the wiper switch contains a variable resistor. The variable resistor connects to t h e in t e r mit t e n t w ip er m od u le t h r ou g h t h e w ip er switch harness. The amount of delay selected by the operator determines the voltage drop through the resistor and the voltage level received by the intermittent wiper module. After the intermittent wiper control module determines the amount of delay selected, it cycles the wipers by per iodically ener gizing circuit V3. Circuit V3 powers the wiper motor low speed brushes. As t h e w in d sh ie ld w ip er m ot or t u r n s , t h e p a r k switch, internal to the motor, moves from its DOWN position to the UP position. When the wiper switch is turned OFF, the V5 circuit prevents the wipers from stopping in any position but park. The windshield washer uses a pump motor located inside the windshield washer fluid r eservoir. When t h e w a sh e r s wi tch is p r es s ed , p ow er i s s u pp lie d through the wiper switch to the pump motor on circuit V10. Circuit Z1 provides ground for the pump motor.
A circuit breaker in t he fuse block powers th e sta ndard wiper system. The standard wiper system operates at either LOW or HIGH speeds. In the ACCESSORY or RUN position, the ignition switch connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) with circuit A31. Circuit A31 supplies voltage to circuit V6 through the circuit breaker in cavity 11 of the fuse block. Circuit V6 is double crimped at the circuit breaker and supplies power to the wiper switch and the park s wi tch in t h e w ip er m ot or. C ir cu it Z1 p r ovi de s ground for the wiper motor and switch. When the operator moves the wiper switch to the L OW p os it i on , b a t t e r y v ol t a ge p a s s es t h r o u gh t h e switch to circuit V3. Circuit V3 feeds the wiper motor low s p ee d b r u sh e s. I f t h e op er a t or s ele ct s w ip er HIGH speed operation, the wiper switch passes current to circuit V4. Circuit V4 feeds th e wiper motor high speed brushes. As t h e w in d sh i eld w ip er m ot or t u r n s , t h e p a r k switch, internal to the motor, moves from its DOWN position to the UP position. When the wiper switch is turned OFF, the V5 circuit prevents the wipers from stopping in any position but park. The windshield washer uses a pump motor located inside the windshield washer fluid reservoir. When t h e w a sh e r s wit ch is p r es se d, p ow er is s u pp lie d through the wiper switch to the pump motor on circuit V10. Circuit Z1 provide ground for the pump motor.
WIPERS— INTERMITTENT A circuit breaker in the fuse block powers t he intermittent wiper system. The wiper system operates at either LOW, HIGH, or DELAY speeds. In the ACCESSORY or RUN position, the ignition switch connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) with circuit A31. Circuit A31 supplies voltage to circuit V6 through the circuit breaker in cavity 11 of the fuse block. Circuit V6 is double crimped at the circuit breaker and supplies power to the wiper switch and the park s wi tch in t h e w ip er m ot or. C ir cu it Z1 p r ovi de s ground for the wiper motor and switch.
REAR WIPER SYSTEM In the RUN position, the ignition switch connects circuit A1 from fuse 4 in the Power Distribution Center (PDC) with circuit A22. Circuit A22 connects to a fu s e b lock i n t h e b u s b a r t h a t p ow er s ci r cu i t V2 3 through the fuse in cavity 1. C ir cu i t V2 3 s u p p li es p ow er t o t h e p a r k s w it ch i n the rear wiper motor. Also, circuit V22 is crimped to circuit V23 at the rear wiper motor connector. Circuit V22 supplies current to the rear wiper switch. I n t h e W IP E or WAS H p os it i on s , t h e r e a r w ip e r switch supplies voltage to the wiper motor on circuit V13. Circuit Z1 provides ground for the wiper motor.
8W - 53 - 2
8W-53 WIPERS— YJ VEHICLES
The rear windshield washer uses a pump motor located inside the windshield washer fluid reservoir. When the rear wiper switch is pressed, power is supplied through the wiper switch to the pump motor on circuit V20. Circuit Z1 provides ground for the pump motor.
J
DIAGRAM INDEX Component Page Circuit Breaker (Fuse Block Cavity 11) . . . . . . . . .8W-53-4, 5 Fuse 4 (PDC) . . . . . . . . . . . . . . . . . . . . . . .8W-53-3, 4, 5, Fuse 4 (Fuse Block) . . . . . . . . . . . . . . . . . . . . .8W-53-4, 5 Fuse 7 (Fuse Block) . . . . . . . . . . . . . . . . . . . . .8W-53-4, 5 Ignition Switch . . . . . . . . . . . . . . . . . . . . . .8W-53-3, 4, 5 Intermittent Wiper Control Module . . . . . . . . . . . . .8W-53-5 Intermittent Wiper Switch . . . . . . . . . . . . . . . . . . .8W-53-5 Rear Windshield Washer Pump Motor . . . . . . . . . . .8W-53-3 Rear Wiper Motor . . . . . . . . . . . . . . . . . . . . . . . .8W-53-3 Standard Wiper Switch . . . . . . . . . . . . . . . . . . . . .8W-53-4 Windshield Washer Pump Motor . . . . . . . . . . . . .8W-53-4, 5 Wiper Motor . . . . . . . . . . . . . . . . . . . . . . . . . .8W-53-4, 5
8W-70 SPLICE INFORMATION— YJ VEHICLES
J
8W - 70 - 1
SPLICE INFORMATION GENERAL INFORMATION This section identifies all splices in the wiring diagrams. It also shows the splices in their entirety. All circuits that are part of the splices are shown, and the systems they affect are referenced. For viewing the location of each splice in the vehicle, refer to Section 8W-95.
SPLICE INDEX Component S101 . . . S102 . . . S103 . . . S104 . . . S105 . . . S106 . . . S107 . . . S108 . . . S109 . . . S110 . . . S111 . . . S112 . . . S113 . . . S114 . . . S115 . . . S116 . . . S117 . . . S118 . . . S119 . . . S120 . . . S121 . . . S122 . . . S123 . . . S124 . . . S125 . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
Page . .8W-70-2 . .8W-70-2 . .8W-70-2 . .8W-70-3 . .8W-70-3 . .8W-70-3 . .8W-70-4 . .8W-70-4 . .8W-70-4 . .8W-70-5 . .8W-70-5 . .8W-70-5 . .8W-70-5 . .8W-70-6 . .8W-70-6 . .8W-70-6 . .8W-70-7 . .8W-70-7 . .8W-70-7 . .8W-70-8 . .8W-70-8 . .8W-70-8 . .8W-70-8 . .8W-70-8 . .8W-70-9
Component Page S126 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-9 S127 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-9 S128 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-9 S129 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-10 S201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-10 S202 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-10 S203 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-11 S204 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-11 S207 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-12 S208 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-12 S209 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-13 S210 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-13 S211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-14 S212 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-14 S213 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-14 S301 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-15 S302 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-15 S303 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-15 S304 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-15 S305 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-16 S306 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-16 S307 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-16 S308 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-70-16
J
8W-80 CONNECTOR PIN OUTS— YJ VEHICLES
8W - 80 - 1
CONNECTOR PIN OUTS GENERAL INFORMATION The pages referenced in this section show the connector, the circuits in the connector, and the pin that
circuit occupies. Individual connector numbers are referenced on diagram pages throughout Group 8W.
CONNECTOR LOCATIONS Component Page C101 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-3 C102 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-3 C103 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-3 C104 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-3 C105 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-3 C106 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-4 C107 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-4 C108 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-4 C109 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-4 C110 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-5 C111 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-6 C112 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-6 C113 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-6 C114 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-7, 8 C115 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-9 C116 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-9 C117 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-9 C118 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-9 C119 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-9 C120 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-10 C121 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-10 C122 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-10 C123 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-10 C124 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-10 C125 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-11 C126 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-11 C127 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-11 C128 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-11 C129 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-11 C130 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-12 C131 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-12 C132 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-12 C133 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-12 C134 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-12 C135 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-13 C136 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-13 C137 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-13 C138 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-13 C139 (2.5L Engine) . . . . . . . . . . . . . . . . . . . . . .8W-80-14 C139 (4.0L Engine) . . . . . . . . . . . . . . . . . . . . . .8W-80-15 C140 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-16 C141 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-16 C142 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-16 C143 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-16 C144 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-16 C145 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-17 C146 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8W-80-17
Component C147 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C148 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C149 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C151 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C152 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C153 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C154 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C155 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C156 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C202 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C203 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C204 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C205 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C206 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C207 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C208 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C209 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C210 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C212 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C213 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C214 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C215 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C216 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C217 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C218 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C219 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C220 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C221 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C222 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C223 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C224 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C225 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C226 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C227 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C228 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C229 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C230 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C231 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C232 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C233 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C301 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C302 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C303 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C304 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page .8W-80-17 .8W-80-17 .8W-80-17 .8W-80-18 .8W-80-18 .8W-80-18 .8W-80-18 .8W-80-19 .8W-80-19 .8W-80-19 .8W-80-20 .8W-80-20 .8W-80-20 .8W-80-20 .8W-80-21 .8W-80-21 .8W-80-21 .8W-80-21 .8W-80-22 .8W-80-22 .8W-80-22 .8W-80-22 .8W-80-23 .8W-80-23 .8W-80-23 .8W-80-23 .8W-80-23 .8W-80-24 .8W-80-24 .8W-80-24 .8W-80-24 .8W-80-24 .8W-80-25 .8W-80-25 .8W-80-25 .8W-80-25 .8W-80-26 .8W-80-26 .8W-80-26 .8W-80-26 .8W-80-26 .8W-80-27 .8W-80-27 .8W-80-27 .8W-80-27 .8W-80-28 .8W-80-28
8W - 80 - 2 Component C305 . . . . C306 . . . . C307 . . . . C308 . . . . C309 . . . . C310 . . . .
. . . . . .
. . . . . .
8W-80 CONNECTOR PIN OUTS— YJ VEHICLES
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
Page .8W-80-28 .8W-80-28 .8W-80-29 .8W-80-29 .8W-80-29 .8W-80-29
Component C401 . . . . C402 . . . . C404 . . . . C405 . . . . C406 . . . . C407 . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . .. .. . . .. ..
. . . . . .
. . . . . .
. . . . . .
. . .. .. . . .. ..
. . . . . .
. . . . . .
J
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
Page . .8W-80-29 . .8W-80-30 . .8W-80-30 . .8W-80-30 . .8W-80-30 . .8W-80-30
J
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES
8W - 90 - 1
CONNECTOR LOCATIONS GENERAL INFORMATION This section provides illustr ations identifying component and connector locations in the vehicle. A con-
nector index is provided. Use the wiring diagrams in each section for conn ector nu mber identificat ion. Refer to the index for the proper figure number.
CONNECTOR LOCATIONS Connector # . Color . Location Fig. C101 . . . . . . BK . . . RT Fender Side Shield . . . . . . . . . .1 C102 . . . . . . BK . . . RT Fender Side Shield Under PDC . .1 C103 . . . . . . BK . . . RT Fender Side Shield . . . . . . . . . .1 C104 . . . . . . BK . . . LT Side of Battery on Cowl Panel . . .1 C105 2.5L . . . NAT . . RT Rear of Engine . . . . . . . . . . . .3 C105 4.0L . . . NAT . . RT Rear of Engine . . . . . . . . . . . .4 C106 . . . . . . BK . . . At Lamp . . . . . . . . . . . . . . . . . . .1 C107 . . . . . . NAT . . Center of Cowl Panel Near Map Sensor . . . . . . . . . . . . . . .1 C108 . . . . . . BK . . . LT Kick Panel Above Park Brake . . .8 C109 . . . . . . BK . . . Under Drivers Seat . . . . . . . . . . . .8 C110 . . . . . . BK . . . Under I.P.Front of Floor Tunnel . . . .6 C111 . . . . . . BK . . . Under I.P.Front of Floor Tunnel . . . .6 C112 . . . . . . BK . . . Under I.P. RT of Stop Lamp Switch .7 C113 . . . . . . BK . . . LT Fender Side Shield . . . . . . . . . .1 C114 . . . . . . BK . . . LT Side Cowl Panel . . . . . . . . . . . .1 C115 . . . . . . BK . . . LT Fender Side Shield . . . . . . . . . .1 C116 . . . . . . BK . . . LT Fender Side Shield . . . . . . . . . .1 C117 . . . . . . BK . . . LT Fender Side Shield . . . . . . . . . .1 C118 . . . . . . BK . . . Bottom of Washer Reservoir . . . . . .2 C119 . . . . . . BK . . . Near Bulkhead Disconnect 2.5L only . . . . . . . . . .Not Shown C120 2.5L . . . BK . . . Rear of Generator . . . . . . . . . . . . .3 C120 4.0L . . . BK . . . Rear of Generator . . . . . . . . . . . . .5 C121 2.5L . . . BK . . . RT Rear of Engine . . . . . . . . . . . .3 C121 4.0L . . . BK . . . Rear of Generator . . . . . . . . . . . . .4 C122 . . . . . . BK . . . On Receiver/Drier . . . . . . . . . . . . .4 C123 2.5L . . . BK . . . RT Side of Engine Rear of Distributor .3 C123 4.0L . . . BK . . . RT Side of Engine Rear of Distributor .4 C124 2.5L . . . BK . . . At End of Distributor Pig Tail . . . . .3 C124 4.0L . . . BK . . . At End of Distributor Pig Tail . . . . .4 C125 . . . . . . GY . . . RT Side of Transmission . . . . . . . .5 C126 . . . . . . BK . . . LT Rear of Transmission . . . . . . . . .5 C127 . . . . . . BK . . . Top of Fuel Tank . . . . . . . . . . . . . .9 C128 . . . . . . BK . . . Top of Rear Cross-member . . . . . . .9 C129 . . . . . . BK . . . Top of Rear Cross-member . . . . . . .9 C130 2.5L . . . BK . . . On Thermostat Housing . . . . . . . . .3 C130 4.0L . . . BK . . . On Thermostat Housing . . . . . . . . .4 C131 2.5L . . . BK . . . LT Side of Engine Bottom of Intake .3 C131 4.0L . . . BK . . . LT Side of Engine Bottom of Intake .4 C132 2.5L . . . BK . . . Injector #1 . . . . . . . . . . . . . . . . .3 C132 4.0L . . . BK . . . Injector #1 . . . . . . . . . . . . . . . . .4 C133 2.5L . . . BK . . . Injector #2 . . . . . . . . . . . . . . . . .3 C133 4.0L . . . BK . . . Injector #2 . . . . . . . . . . . . . . . . .4 C134 2.5L . . . BK . . . Injector #3 . . . . . . . . . . . . . . . . .3 C134 4.0L . . . BK . . . Injector #3 . . . . . . . . . . . . . . . . .4 C135 2.5L . . . BK . . . Injector #4 . . . . . . . . . . . . . . . . .3 C135 4.0L . . . BK . . . Injector #4 . . . . . . . . . . . . . . . . .4
Connector # . Color . Location Fig. C136 . . . . . . BK . . . Injector #5 . . . . . . . . . . . . . . . . .4 C137 . . . . . . BK . . . Injector #6 . . . . . . . . . . . . . . . . .4 C138 2.5L . . . BK . . . Center of Dash Panel . . . . . . . . . . .1 C138 4.0L . . . BK . . . Center of Dash Panel . . . . . . . . . . .1 C139 . . . . . . BK . . . Under Bulkhead LT Side of I.P. . . . .1 C140 2.5L . . . GY . . . LT Rear of Intake . . . . . . . . . . . . .3 C140 4.0L . . . GY . . . LT Rear of Intake . . . . . . . . . . . . .4 C141 2.5L . . . BK . . . Rear of Throttle Body . . . . . . . . . .3 C141 4.0L . . . BK . . . Rear of Throttle Body . . . . . . . . . .4 C142 2.5L . . . BK . . . On Throttle Body . . . . . . . . . . . . .3 C142 4.0L . . . BK . . . On Throttle Body . . . . . . . . . . . . .4 C143 2.5L . . . BK . . . Rear of Intake . . . . . . . . . . . . . . .3 C143 4.0L . . . BK . . . Rear of Intake . . . . . . . . . . . . . . .4 C144 . . . . . . BK . . . Above Bulkhead Disconnect . . . . . . .1 C145 . . . . . . GY . . . On Power Steering Pump . . . . . . . .3 C146 . . . . . . BK . . . At Headlamp . . . . . . . . . .Not Shown C147 . . . . . . YL . . . At Side Marker Lamp . . . . . . . . . .2 C148 . . . . . . BK . . . At Park/Turn Lamp . . . . . .Not Shown C149 . . . . . . BK . . . RT Side Behind Bumper . . . . . . . . .2 C150 . . . . . . BK . . . LT Side Behind Bumper . . . . . . . . .2 C151 . . . . . . BK . . . At Park/Turn Lamp . . . . . . . . . . . .2 C152 . . . . . . YL . . . At Side Marker Lamp . . . .Not Shown C153 . . . . . . BK . . . At Headlamp . . . . . . . . . . . . . . . .2 C154 . . . . . . BK . . . LT Fender Side Shield . . . . . . . . . .2 C155 . . . . . . BK . . . Direct Connection to Horn . . . . . . .2 C156 . . . . . . BK . . . Bottom of Washer Reservoir . . . . . .2 C201 . . . . . . BK . . . LT Side of I.P . . . . . . . . . . . . . . .7 C202 . . . . . . BK . . . On Fuse Block . . . . . . . . . . . . . . .7 C203 . . . . . . BK . . . LT Kick Panel . . . . . . . . . . . . . . . .7 C204 . . . . . . BK . . . LT Kick Panel . . . . . . . . . . . . . . . .7 C205 . . . . . . BK . . . LT Side Kick Panel Under I.P. . . . . .7 C206 . . . . . . BK . . . At Speaker . . . . . . . . . . .Not Shown C207 . . . . . . BK . . . LT of Steering Column Rear of Cluster . . . . . . . . . . . . . . . . .7 C208 . . . . . . BK . . . LT Side of Steering Column . . . . . .7 C209 . . . . . . BK . . . Rear of Switch . . . . . . . . . . . . . . .7 C210 . . . . . . BK . . . Rear of Switch . . . . . . . . . . . . . . .7 C211 . . . . . . BK . . . Base of Steering Column . . . . . . . .7 C212 . . . . . . BK . . . At Wiper Motor . . . . . . . . . . . . . .7 C213 . . . . . . BK . . . RT of Steering Column Under I.P. . .7 C214 . . . . . . BK . . . RT Side of Cluster Bezel . .Not Shown C215 . . . . . . BK . . . Base of Steering Column . . . . . . . .7 C216 . . . . . . BK . . . Base of Steering Column . . . . . . . .7 C217 . . . . . . BK . . . RT Side of Brake Pedal Support . . .7 C218 . . . . . . BK . . . Base of Steering Column . . . . . . . .7 C219 . . . . . . BK . . . Rear of Switch . . . . . . . . . . . . . . .7 C220 . . . . . . BK . . . Rear of Switch . . . . . . . . . . . . . . .7 C221 . . . . . . BK . . . Rear of Switch . . . . . . . . . . . . . . .7
8W - 90 - 2 Connector # . Color C222 . . . . . . BK . . C223 . . . . . . BK . . C224 . . . . . . BK . . C225 . . . . . . BK . . C226 . . . . . . BK . . C227 . . . . . . BK . . C228 . . . . . . BK . . C229 . . . . . . BK . . C230 . . . . . . BK . . C231 . . . . . . BK . . C232 . . . . . . BK . . C233 . . . . . . BK . . C301 . . . . . . RD . . C302 . . . . . . BK . . C303 . . . . . . BK . . C304 . . . . . . BK . . C305 . . . . . . BK . . C306 . . . . . . BK . . C307 . . . . . . BK . . C308 . . . . . . BK . . C309 . . . . . . BK . . C310 . . . . . . BK . . C401 . . . . . . BK . .
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES . Location Fig. . Rear of Switch . . . . . . . . . . . . . . .6 . Rear of HVAC Switch . . . . . . . . . . .6 . Rear of Radio . . . . . . . . . . . . . . .6 . Rear Center of I.P . . . . . . . . . . . . .6 . Rear of Glove Box LT Side . . . . . . .6 . Under I.P Right Side . . . . . . . . . . .6 . At Speaker . . . . . . . . . . .Not Shown . RT Side of HVAC Housing . . . . . . .6 . RT Side of HVAC Housing . . . . . . .6 . RT Kick Panel . . . . . . . . . . . . .6, 7 . Top of I.P. Center Support . . . . . . .7 . Top of I.P. Center Support . . . . . . .7 . LT Kick Panel . . . . . . . . . . . . . . . .8 . At Buckle . . . . . . . . . . . . . . . . . .8 . LT Rear Quarter Panel . . . . . . . . . .8 . LT Rear Quarter Panel . . . . . . . . . .8 . RT Rear Quarter Panel . . . . . . . . . .8 . At Motor . . . . . . . . . . . .Not Shown . LT Side of I.P. at Lamp . . . . . . . . .6 . RT Side of I.P. at Lamp . . . . . . . . .7 . At CHMSL Lamp . . . . . . .Not Shown . At CHMSL Lamp . . . . . . .Not Shown . Top of Fuel Tank . . . . . . . . . . . . . .9
Connector # . Color C402 . . . . . . BK . . C403 . . . . . . BK . . C404 . . . . . . GY . . C405 . . . . . . BK . . D101 . . . . . . . . . . .
J
. Location Fig. . RT Side of Axle . . . . . . . .Not Show n . RT Side of Roll Bar . . . . . . . . . . . .8 . LT Side Front of Transmission . . . . .5 . RT Side of Transmission . . . . . . . .5 . ABS Diode Under I.P.Front of Floor Tunnel . . . . . . . . . . . . . . .6 D201 . . . . . . . . . . . . Taped In Harness Near Wiper Switch T/O . . . . . . . . . . . . . . . .6 G101 . . . . . . . . . . . . Left of Battery on Dash Panel . . . . .1 G102 . . . . . . . . . . . . Center of Dash Panel . . . . . . . . . . .1 G103 2.5L . . . . . . . . Rear of Distributor . . . . . . . . . . . .3 G103 4.0L . . . . . . . . Rear of Generator . . . . . . . . . . . . .4 G104 2.5L . . . . . . . . RT Side of Engine . . . . . . . . . . . . .3 G104 4.0L . . . . . . . . Rt Side of Engine . . . . . . . . . . . . .4 G105 . . . . . . . . . . . . RT Side Radiator Closure Panel . . . .2 G106 . . . . . . . . . . . . LT Side Radiator Closure Panel . . . .2 G107 . . . . . . . . . . . . RT Side of Dash Panel . . . . . . . . .1 G108 2.5L . . . . . . . . RT Rear of Engine . . . . . . . . . . . .3 G108 4.0L . . . . . . . . RT Rear of Engine . . . . . . . . . . . .4 G201. . . . . . . . . . . . . At Cigar Lighter . . . . . . . . . . . . . .6 G202. . . . . . . . . . . . . Rear of Radio . . . . . . . . . . . . . . .6
J
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES
8W - 90 - 3
J Y s n o i t c e n n o C t n e m t r a p m o C e n i g n E 1 . g i F
8W - 90 - 4
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES
J
J Y s n o i t c e n n o C t n e m t r a p m o C e n i g n E 2 . g i F
J
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES
8W - 90 - 5
J Y L 5 . 2 s n o i t c e n n o C e n i g n E 3 . g i F
8W - 90 - 6
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES
J
J Y L 0 . 4 s n o i t c e n n o C e n i g n E 4 . g i F
J
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES
8W - 90 - 7
J Y s n o i t c e n n o C n o i s s i m s n a r T 5 . g i F
8W - 90 - 8
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES
J
J Y s n o i t c e n n o C l e n a P t n e m u r t s n I 6 . g i F
J
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES
8W - 90 - 9
J Y s n o i t c e n n o C l e n a P t n e m u r t s n I 7 . g i F
8W - 90 - 10
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES
J
J Y s n o i t c e n n o C y d o B 8 . g i F
J
8W-90 CONNECTOR LOCATI ONS— YJ VEHI CLES
8W - 90 - 11
J Y s n o i t c e n n o C e m a r F 9 . g i F
8W-95 SPLICE LOCATIONS— YJ VEHICLES
J
8W - 95 - 1
SPLICE LOCATIONS GENERAL INFORMATION This section provides illustrations identifying the general locat ion of the splices in th is vehicle. A splice index is provided. Use the wiring diagrams in each section for splice n umber identification. Refer t o th e index for the proper splice number.
SPLICE LOCATIONS Splice Number S101 S102 S103 S104 S105 S106 S107 S108 S109 S110 S111 2.5L S111 4.0L S112 S113 S114 S115 S116 S117 S118 S119 S120 4.0L S121 2.5L S122 S123 S124 S125
Locations Fig. Near PDC T/O . . . . . . . . . . . . . . . . . . . . .1 Near T/O for Engine Wiring . . . . . . . . . . . . .1 RT Dash Panel Near T/o for Ground . . . . . . .1 Near T/O for MAP Sensor . . . . . . . . . . . . . .1 Near T/O for MAP Sensor . . . . . . . . . . . . . .1 Left Side of MAP Sensor . . . . . . . . . . . . . .1 In ABS Wiring T/O Near Grommet . . . . . . . .1 In ABS Wiring T/O Near Grommet . . . . . . . .1 Above Brake Booster . . . . . . . . . . . . . . . . .1 Rear of Generator . . . . . . . . . . . . . . . . . . .3 RT Side of Valve Cover . . . . . . . . . . . . . . .4 RT Side of Valve Cover . . . . . . . . . . . . . . .3 Near T/O for PRNDL Switch . . . . . . . . . . . .5 Between Inj #2 and Inj #3 . . . . . . . . . . . . .3 Near T/O for Throttle Body Wiring . . . . . . . .3 Above Bulkhead Connector . . . . . . . . . . . . .1 Above Bulkhead Connector . . . . . . . . . . . . .1 Near Data Link T/O . . . . . . . . . . . . . . . . . .1 Near Data Link T/O . . . . . . . . . . . . . . . . . .1 Near Data Link T/O . . . . . . . . . . . . . . . . . .1 RT Side of Valve Cover . . . . . . . . . . . . . . .3 RT Side of Valve Cover . . . . . . . . . . . . . . .4 Near T/O for RT PK/TURN Lamp . . . . . . . . .2 Near T/O for RT Fog Lamp . . . . . . . . . . . . .2 Near T/O for LT Fog Lamp . . . . . . . . . . . . .2 Near T/O for LT PK/TURN Lamp . . . . . . . . .2
Splice Number S126 S127 S128 S129 S201 S202 S203 S204 S205 S206 S207 S208 S209 S210 S211 S212 S213 S301 S302 S303 S304 S305 S306 S307 S308
Locations Fig. Near T/O for Headlamp . . . . . . . . . . . . . . .2 Near T/O for Headlamp . . . . . . . . . . . . . . .2 Near T/O for Headlamp . . . . . . . . . . . . . . .2 Near Horn T/O . . . . . . . . . . . . . . . . . . . . .2 Near T/O for Dimmer Switch . . . . . . . . . . . .7 Near T/O for Dimmer Switch . . . . . . . . . . . .7 Near T/O for Dimmer Switch . . . . . . . . . . . .7 Near T/O for Dimmer Switch . . . . . . . . . . . .7 Near T/O for Wiper Switch . . . . . . . . . . . . .7 Near T/O for Wiper Switch . . . . . . . . . . . . .7 Near Panel Illumination T/O . . . . . . . . . . . . .7 Near Panel Illumination T/O . . . . . . . . . . . . .7 Near Panel Illumination T/O . . . . . . . . . . . . .7 Near Panel Illumination T/O . . . . . . . . . . . . .7 Near T/O for Ignition Switch . . . . . . . . . . . .7 Near T/O for Ignition Switch . . . . . . . . . . . .7 Near T/O for Radio . . . . . . . . . . . . . . . . . .6 Near T/O for Park Brake Switch . . . . . . . . . .8 Near T/O for Park Brake Switch . . . . . . . . . .8 Near Grommet LT Rear Quarter Panel . . . . . .8 Near LT Rear Tail Lamp T/O . . . . . . . . . . . .8 RT Rear Quarter Panel Near Tail Lamp . . . . .8 Near T/O for Dome Lamp . . . . . . .Not Shown In CHMSL Jumper Harness . . . . . .Not Shown In CHMSL Jumper Harness . . . . . .Not Shown
8W - 95 - 2
8W-95 SPLICE LOCATIONS— YJ VEHICLES
J
J Y s e c i l p S t n e m t r a p m o C e n i g n E 1 . g i F
J
8W-95 SPLICE LOCATIONS— YJ VEHICLES
8W - 95 - 3
J Y s e c i l p S t n e m t r a p m o C e n i g n E 2 . g i F
8W - 95 - 4
8W-95 SPLICE LOCATIONS— YJ VEHICLES
J
J Y L 0 . 4 s e c i l p S e n i g n E 3 . g i F
J
8W-95 SPLICE LOCATIONS— YJ VEHICLES
Fig. 4 Engine Splices 2.5L YJ
Fig. 5 Transmission Splices YJ
8W - 95 - 5
8W - 95 - 6
8W-95 SPLICE LOCATIONS— YJ VEHICLES
Fig. 6 Instrument Panel Splices YJ
Fig. 7 Instrument Panel Splices YJ
J
J
8W-95 SPLICE LOCATIONS— YJ VEHICLES
Fig. 8 Body Splices YJ
8W - 95 - 7
