Wire Description
ComponentIdentifiers (CID¹) Module Identifier (MID²) Engine ControlSystem (MID No.036) CID
Wire Number
Wire Color
101
Description
Wire Number
Wire Color
Power Circ uits
Component
Ba t (+)
G790
PK
Not Used
RD
Hd Lmp
G 79 1
BR
Not Used
YL
A u ot L ub e P u m pt o A u t oL u be P er s u s r eS w .
H 7 02
PU
Imp l e me n t C o n rt o lR e e v r isn gF a nS w N ( .O .)
1 06
W H
T li /t L i tf Po isit onS e ns o r s
H 70 3
Y L
I m p el me nt Co nt or lR e v er is ngF a nS w(N C. ).
F u e lI n j e tco r S o l e n o i d# 1 F u e lI n j e tco r S o l e n o i d# 2
0003 0004 0005
F u e lI n j e tco r S o l e n o i d# 3 F u e lI n j e tco r S o l e n o i d# 4 F u e lI n j e tco r S o l e n o i d# 5
P U
M ai nP ow e r Rl y O u pt ut
0006 0 0 41
F u e lI n j e tco r S o l e n o i d# 6 E C M 8V D CS u pp l y
1 14
R D
W ar ni ng Ho nr ( of w r a r d)
124
GN
A u ot L u b eP u mp ot A u t oL u be P r e s u er S w.
H 7 17
BR
Imp l e me n t C o n rt o lP iol t P er s s S ol
0 0 91 0 0 94
T hor tl te S en s or Fue lP r e s us r eS e n sor
129
RD
F u el P rm i in g P u mp t oM a h c i n eI net r af c e
H 7 18
GY
Imp l e me n t C o n rt o lT it lC y P l o istoi n
1 3 6
G N
S up p l e me n t a l St Ste e r ni g
H 7 4 6
Y L
V a r ai b l eS p e e d Fa nS o l e n o i d
0 1 00 0110
O i l Per s su r e S e n s or E n g i n eC o o l a n t T e m p ear t u r eS e n s o r
1 3 8
G N
A uto Lu b e Pu m p To PCS
H 7 4 7
B R
V a r ai b l eS p e e d Fa nS o l e n o i d
H 79 5
P K
0 1 68 0172
E l ec tirc al P o we r S up p l y I n t aek M a n i f o ld AirTempe r a t uer S e n s o r
0174 0 1 90
F u e lT e m p e r a t u r eS e n s o r E n gi n e S pe e d S e n s or
110 1 12
1 41
RD
R D
B ea o c n/ He at ed M ri or sr
1 47
RD
E CA P / C e nt er D as h nI di ca o t r Pa ne l
1 50
O R
H 71 4
PK P K O R
Auto Reverseing Fan Solenoid I m p el me nt Co nt or lL fi P t or po tr oi na lS ol I m p el me nt Co nt or l L o w e r P r op or it on al So l
BR
T ar ns mi s oi n Sw ti ch S / en so r Re u t rn # 1
K 73 7
B R
N o t Us ed
RD
Unswitched Bus P ower
K 73 8
GN
Not U sed
RD
Hood Actuator
K 73 9
BU
Not Used
1 9
RD
H o dA tc u a ot r
0 2 62 0267 0268
5 V ot lS e n os r S u p l y E n g i n eS h u t d o w nS w i t h c C h e c k Por g r a m m a b l eP a r a m e ters
200 2 01
0274 0275
A t m op s h e r i c Per s s uer S e n s o r RightTu r b o nI l e t P r e s u r eS e n s o r
202
BK
229
0 2 83 0291
F it le r Re srti ct L a m p E n g i n eC o o lni g F a n Sole noid
261 C216
BK
0 2 96 0342
Tra n s mi s iso nE CM C a mh s a f t P o st i o nS e n s o r
0 5 96 1639 1785 2 4 17
N 7 0 7
P U
Fu e l D ffi e r e n ita l P er su er ( R e ut nr )
GroundCircuits
R 7 46
PK
Atm o s ph e er i c Pr e s uer S e ns o r G ( r ou n d)
BK
Main Chassis
R747
GY
B K
O pe ar ot r M o ni ot r R e ut nr
T 7 2 5
W H
F u e lD fief er nt ai lP er s u r eS gi na l
X msn Ctrl
Y7 9 4
OR
Expa nded Can Data Link +
BK
E ngine E CM
Y 7 95
GN
Expa nded C an D ata L i nk -
BK
B arke Oil Pressure Sw.
838
YL
Belly Guard Actuator
Implement R etu rn
839
BU
B el ly G uard Actuator
BasicMachineCircuits
Boost Pressure Se n sor Signal
A 89 3
OR
F ue lP ri mi ng S w.
3 04
W H
S at tr er Re al y ot S at tr er Mo ot r
G 82 8
W H
E ng ni e+ 5V S e n o s r S u pp yl
Imp l e me n t C o n rt o l M a c hni e S e c uirt y S y set m
3 06
GN
Sa t rt er R el ay C oi l o t T ra ns mi ss oi n Co nt ro l
G 82 9
GN
E ng ni e S e n so r Gr ou nd
3 0 8
Y L
M a i n Po w e rRe al yCo l i
G 8 3 3
P K
Fu e l T emp e r a t u r e Se n so r( G r o u n d )
I n t aek M a n iof l d P r e s u r e S e nsor Sta rtAidS o l en odi
3 21
B R
B ac u k pA al m r L a m pT ar ve A l al m r
G 85 0
B U
I n l et A ri He at e r
3 2
G Y
W a r n i n g H o nr F( o r w a dr )
326
PU
K ey Sw C '' T erm.
¹The CID isa diagnosticcode thatindicateswhich circuitisfaulty. ²The MID isa diagnosticcode thatindicateswhich electroniccontrol module diagnosed the fault.
Failure Mode Identifiers (FMI)¹ F MI No No .
F ai u l e r De sc ri pt oi n
3 97 3 98
B U GN
A 3 01
WH G Y
X 3 37
WH
4 03
D a t av a l i d b u t a b o v en o r m aol p e r ai to n a l ar n g e .
O R
A 3 00 A 3 0 7
G N
4 16
O R
D a t av a l i d b u t b e l o wn o r m aol p e r ai to n a l ar n g e .
4 1 7
G Y
2
D a t ae r r a tci , i n t em r itte n t , o r i n c orre c t .
3
H oo dA tc ua ot r M o ot r L( ow e r ) H oo dA tc ua ot r M o ot r R ( a i se ) Lo w er Hood Raise Hood T h r o t l t eP o si i t o n Not Used MonitoringCircuits A tl e r na ot r( R) Te m r .
G 8 5 6 G 85 7 J 80 7 J 80 8 J8 0 9 J 8 13
WH
Ti m i n g C/ a . l Pr o b e( + )
YL
Timing/Cal. P robe (-)
B K B K BK BK
P or po tr oi na R l et u r n( 1- 3) P or po tr oi na R l et u r n( 4/ R e v) Proportional Return (Forward) Implement Proportional Return
J 8 1 4
B K
Im p l e m e n P t or p o troi n a R l e tu nr
J8 1 5
BK
RideC ontrolS olenoids ProportionalR eturn
J 8 43
BK
T ubr o I nl e t Pr e s u er S e ns o r G ( r ou n d)
J 84 4
G Y
T u r bo I nl et Pr es u s er S en o s r +( B at et yr )
S up pl em e n at S l et er ni gS w
T 8 5 8
P ir m a yr St e ir n gS w
T8 59
O pr Mo nP ar ki ng B ar e k
T 8 6 0
G Y WH
F u e lI nj ec ot rS ol en oi d# 1/ 2C om m o n Fu e l I nj e ct o r So el no di # 3 / 4C o m mo n
4 19
Y L
Volta ge ab o v en o r m a o l r s h o ret d hgi h .
4 2 6
B R
O pr Mo nP o w e r Tr a i nO i Fl l iet r
4
Volta ge be l o wn o r m a o l r s h o ret d l o w.
430
BU
O pr M o n Ai r F il ter
5
Curre n t b e l o wn o r m a l orope n icr c ut i.
432
PK
O p r Mon B rake Press. o( il)
944
OR
Cat Data L i nk +
6
Curre n t a b o v en o r m a l orgrou n d e dc i r c u it.
439
YL
La mp nIdicator
9 45
BR
Cat Data Link -
976
OR
Ride C ont Solenoid 1
9 8 7
WH
Th ri dF u n tcoi nD vie tre rS o l
7
Mecha n i c a sl y set m n o t r e s p o n d i n gp r o p elry .
8
Abnorm a l rfe q u e n c y , p u le s w i d t h , o r p eiro d .
9
A bn or ma l u p d at e.
442 4 4 3
Hyd System T e m p G age
Y L
P owe rTr a i nTe m p G a g e
PK
Fuel Level Gage
A b no r m a l r at e o f h c a ng e .
450
YL
Tach Sender (+)
Failu r e m o d en o t i d e ni tf i a bel .
4 53
P K
S up pl em e n at S l et er ni gF a u tl L a m p
12
Bad d e vci e o r o c m po n en t .
13 14 15
447
GY
10 11
484
YL
O u t of c ailb ar toi n .
E 45 5
P a ar m e t e r af iul r es .
F 42 1
YL
G 47 9
WH
B R
F u e lI nj ec ot rS ol en oi d# 5/ 6C om m o n
9 0
P U
X m s nS h fti So l N o .5 O Orr 4
90 1
WH
Xmsn Shift S ol No . 6
99 4
GY
Oil Pr e ssure Sensor (Signal)
995
BU
Coola n t T emperatu er Sensor S ( ginal)
A 95 8
W H
P ar kB ar ke S ol
Pr m i ary Steering L amp
A 9 82
H yd ar ul ci Oi F l li et r
C 96 7
F ue lT em pe ra ut r eS en so r S ( ig n al )
O R
C 99 1
BR
E n g i ne T h rottle C ont
B U
I n t ak eM an fi o l d A i r e T mp er at u r e S e ns or (S gi na )l
PK
F ue lP re ss ur eS en so r S ( gi na )l
P a ar m e t e r af iul r es . P a ar m e terno tava i l ab l e .
G 48 5
B U
O pr Mo nF or nt Br ak eT em p e ra ut er
E 90 1
17
Mod ule n o t r es p on dni g .
G 48 6
G N
O R
T ar ns Ou pt ut Sp dQ +
S e ns o r u s p pyl f a u lt.
O pr Mo nR ea r B r ak eT e m pe ar ut er AccessoryCircuits
E 90 6
18
E 90 7
GY
T ar n sO ut pu t Sp dQ -
19
Con d i ito nn o t m et.
16
20 P a ar m e t e r af iul r es . ¹The FMIisa diagnosticcode thatindicateswhattype offailure hasoccurred.
P relube In Indica tor
506
PU
Washer - rFont
507
WH
Washer - R e ar
5 13
OR
AC / P er ss ur e Sw . ot A C/ Cul ct h S o el no di
B R
A u x Li tf Pr o p o r ito n al So l
P K
R a c kb ac kP or po tr oi na lS ol
E 92 2
GN
C530
BU OR YL GY
S top L amp Turn Lamp - L e ft TurnL amp- Ri Right
H i g hE x h a utsT e m p e r a ture Use r D e ifn edS h u t d own
E 3 60 E 3 62 E 3 63
K 9 27
BU YL BU PK
Trans O il Temp S e n s or
G N
Ri d eC o n rt o lS o l e n o i d2
P 94 5
OR
A nt i Dr fi t S o -l S it ck
Head La Lamp Lo Low
P9 4 6
BR
Anti Dr Drift Sol- B o om
P 9 76
BR
Q uci k C o u pel r S w T o L ow P er s su r eS o l
7 27
GN
S u p el me nt al S e t er ni gM ot or R el ay
P 99 0
BR
S at rt R el ay C rt l( Re u t rn )
7 28
B U
S up pl em e n at S l et er ni g C o nt S w
T 9 5 7
P U
F u e l nI ej tc or So el no di #1
7 5 1
G N
Y L
Fu e l nI ej tc o r So el no di # 2
752
YL
Xmsn Shift Sol No. 2
T95 9
BR
Fuel In Injector Solen o id #3
7 5 4
B U
X m s nS h i tf So N lo 3 . Or 1
T9 60
B U
Fu e l nI ej tc o r So el no di # 4
O R
I 1- 4 L 1- 3 L 1- 3
F 1- 5, Z- 1 5
K 3-
S e n o s r- Ti t l Po isi t o n
Machine Location F- 1 9 , W - 1 9 H- 1 8 , TT- 1 8 F-7 , U-7
A -9
C 1- 0, W- 10 G -7 , U 7-
H- 2
Connector Location
E 2- 4, U- 2 4
F 1- 3 ,Z 1- 3
S e n o s r- Tr a n m s sis oi n Oi l Te m p e r a t u r e
I 9-
D 1- 1 ,U ,U- 1
F 1- 3, Z- 1 3
S e n o s r- Tr a n m s sis oi nI n p u t Sp e d
I 9-
E 1- 0, U- 1 0
B er ak e r - Al et nr at or
I 1- 4
F 1- 5, Z 1- 5
S en so r- Tr an .s Ou pt ut Sp ee d( L e a di ng )
H 9-
E 1- 2, U 1- 2
CONN 1
C-17
F-2 , U-2
B re ak er - B el yl G ua rdA c u t at or
K -1 4
F -1 5, Z 1- 5
S en so r - T r an s. O ut pu t Sp ee d( Tr ai il ng )
H 9-
E-1 2, U - 12
CONN 2
C-17
F-2 , U-2
B er ak e r - Ho od A tc ua ot r
J 1- 4
F 1- 5, Z- 15
S en so r- Tu rb oI nl et Pr es u s er
G 1- 2
G 9- , X- 9
CONN 3
J- 1 6
Breaker -M -Main
J- 14
F-15 ,Z ,Z-15
Solenoid -A -A/C Clutch
A-13
G-6 ,U ,U-6
CONN 4
J- 1 6
B er a ke r- Ru n ni gL a m p
K 1- 4
F 1- 5, Z- 1 5
S o l e n o i d- Au xL fti Pr o p
H- 3
F- 1 9 ,W ,W- 1 9
CONN 5
B-1 5
Breaker -S -Start
I-14
F- 1 5 Z , - 15
Solenoid -A u x Lower Prop
I-3
F-19 ,W-19
C ON N6 T i m i ng C / a l P or be
D 1- 5
B er ak e r - Un sw t i h c ed B us (C ab )
J 1- 4
F 1- 5, Z- 15
S ol en oi d- Du mp P or p
I 3-
F 1- 9, W- 19
CONN 7
E-1 5
G-7 , U-7
Schematic Location
ConnectorNumber
Machine Location
F-2 , Y-2 F-2 , Y-2 F-7 ,U-7 F 7- , U - 7
Control -Engine
G- 1 4
F-7 ,U-7
Solenoid -Lift Anti-Drift
I-3
F-19 ,W-19
C ON N8 J u m pS at rt R ec pt ac el
L -1 2
G -1 3, Z 1- 3
Co n t or -l Ho o d Ra sie L/ o w e r
J 1- 3
F 1- 5, Z- 1 5
S o l e n o i d- Li tf Pr o p
I 3-
F- 1 9 ,W ,W- 1 9
CONN 9
A-1 0
F-11 , U-11
Motor -A -Autolube Pu P ump
B- 6
I-10 , T-10
Solenoid - Lo w er Prop
Motor -B -Belly Gu Guard
L-14
D-14 , X-14
Solenoid - On / Off Pilot
C 5-
F- 1 2 , S- 1 2
S o l e n o i d- Qu cik Co u p el r
H 7- , U- 7
S o l e n o i d -R a c kB a ck Pr Pr op
Mo ot r- Fr on W t a h s e r Mo ot r- Fu el Pr Pr m i ni gP ump
A 1- 3
Mo ot r- Ho od A tcu a t o r
G 1- 5
E 3- , Y- 3
C-5
F-12 , S-12
Motor -Re ar W asher M o t or - Se co nd ar yS et er ni g
C-7
E - 13 , S - 13
CONN 13 CONN 14
I-12 , V- 12
F 1- 5, Z- 1 5
S o l e n o i d s - C yl ni d e rHe a d ( 1- 6)
F- 17
G 7- , U- 7
CONN 18
I-4
G- 1 5 , X - 1 5
D 1- 1, X- 11
S ol en oi ds - Ri de C o n rt ol ( 1- 3)
G 3-
F 1- 9 ,W 1- 9
CONN 19
L- 3
G-18 , V-18
Solenoid - Start A id
E - 1 , U- 11
CONN 20
L- 3
Switch - A/C Refrigerant
B- 1 3
G- 6 , U -6
CONN 21
K- 3
G- 1 8 , Z - 1 8
S w i ct h- Be l l yG u a dr A ct u a ot r1 2,
L 1- 3
G 1- 5, Z- 1 5
CONN 22
J-3
G-18 , T-18
F 7- , U- 7
S w i ct h- Br a k eO l iP er ss u r e
B 1- 3
E 7- , U- 7
CONN 23
H-3
F-17 , V-17
S wi ct h- Di ff er en i t al P er s ur e
B 1- 6
H 7- , U- 7
CONN 44
B- 6
C-16 ,X-16
S wi ct h- Di sc on ne tc
L 1- 2
G 1- 5, Z- 15
CONN 45
B- 6
I-10 ,T-10
S w i ct h- Fu el Pr m i ni gP u m p
A 1- 3
H 7- , U - 7
G -6 , W- 6 F- 6, V- 6 C 1- 9 , W - 19
S ol en oi ds - T ar ns . C l ut ch
I -9
S wi ct h - G r ou nd L ev el S hu d t ow n
H -1 3
H 7- , U- 7
S wi ct h- Ho od A ct u a ot r
H 1- 3
F 1- 5, Z- 15
H - 7, U - 7
S wti c h- H y dr a ul i c Fi let r B yp a s P r es s u re
C-5
E - 13 , S - 1 3
L -3
D -4 , U 4-
S wi ct h- P ar kB ra ke P re ss ur e
D 5-
E -1 3, T 1- 3
S en o s r -F ue l Pr es u s er
B 1- 6
G 1- 1 , W- 11
S wi ct h - Pr m i ar y St e ir ng P re s u r e
K 7-
F 1- 4 , X- 14
S en so r - Fu el T em pe ra u t re
B -1 6
G -7 , U 7-
S wi ct h- S ec on da ry S et er ni gP re ss ur e
I 5-
G -6 , U 6-
S wi ct h- T ar n sF li e t r By pa ss
E 1- 5
S en so r - Hy dr au il cO li T em pe ra ut re
I-12 , V- 12 I-12 , V- 12
G 6- , U- 6
F-15 , Z-15
E 9-
C - 15
H-6
F 7- U ,- 7
E -1 0, X 1- 0
I-14
D- 15
S en so r - Fr on t Ax el O li T em pe ra u t re
D-10 , U-10
F- 6
E 1- 5
S e ns o r - Cr a nk S h af t S pe e dT i m ing
E-13 , S-13
I-6 H-6
CONN 17
S e n os r- Bo o st Pr e s us er S en o s r -C oo al nt Te m p er at u r e
C-7
CONN 15 CONN 16
S en o s r -A m t os p h er ci P re s ur e
D 1- 5
CON N12
E 7- , U- 7 I-9 , Y-9
S en de r- T C/ T em p e ar ut er
S en so r - Ca m Sh af t Sp ee d T i mi ng
D 1- 7, V- 1 7 F- 1 9 , W- 1 9
E 7- , U -7
K -1 0
I 1- 6
L 2I 3B 1- 3
F 1- 9, W- 19
J 9-
E 9-
E -10 , X-10
I 3-
J 1- 4
R el ay - S ec on da ry S et e irng n I et rm ed ai e t
E-9 , X-9
K- 8
K-7
Re al y- Ma ni
Re is ts o r - C A N
G- 9
B-13
E-9 , X -9
Relay - Start
CONN 10 CONN 11
S ol en oi d- Ti tl An it D - irtf
D 1- 1, X- 11
K- 1 1
S e n d e r- Fu e lL e v e l
F-19 , W-19 F-19 , W-1 9
Solenoid - Va irable Sp Speed Fa Fan
J 9-
Motor -S -Starter R e l ay - Se co nd ar yS et er ni g
S o l e n o i d- Re e v sri n g Fa n
I-3 H-3
E n gi n eO v e r s pe e d
Fue l F itl e r R e srti ct i on Idle Ele v a t e dot I n c r e a s e B a tet r y V o l t a ge H i g h nI t a k eM a n iof l d A i r T e m p e r aut r e
K -7
F -1 4, X -1 4
C 5-
D 1- 3, S 1- 3
Volume 1: Chassis ©2006 Caterpillar AllRightsReserved
Title
X m s nS h i tf So N lo 4 . Or 5
T9 61
G N
Fu e l n I ej tc o r So el no di #5
BK
A u ot R e e vre s F a n/ Sat r t Ai d S oel n oi dR eut r n
T96 2
WH
Fue l I nej cot r S ol e n o i d# 6
F 71 3
OR
T ur bo n I el t Pr e ss ur eS en so r (S gi na )l
X 91 8
PU
G ro un d L e ve l S h ut D ow n( N. O. )
F7 6 2
G Y
S at tr Ai dS o l e n o i d
X 9 1 9
WH
G or u n dL e ve S l h u D t o wn ( N . C . )
G 7 64
PK
X m sn C on t P ar k Br a ke L ev e r S wT o Gn d
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Harness And Wire Electrical Schematic Symbols
BB
BB
AA
AA
E l e crti c S t a ri n t g M o t o:r E n gi n e C Co ontrol:
165-46 1 9 ( D e lo c 4 2MT)
Symbols OffMachine SwitchSpecification
Z
Z
Y
Y
X
X
W
W
V
V
U
U
T
T
S
S
R
R
Q
Q
P
P
O
O
N
N
Part N o.
Function
Actuate
T
Deactuate
Contact Position
275 to 1750 kPa¹ NormallyOpen² (39.9 to 253.8 psi) 138 ±28 kPa 89 ±20 kPa NormallyClosed (20 ±4 psi) (12.9 ±2.9 psi) A-B,Normally Open 8270 kPa MAX 6890 ±345 kPa 174-43 12 P a r k B r ae k P r e su sre (1200psi MAX) (1000 ±50 psi) A-C,NormallyClosed A-B,Normally Open 10700 kPa MAX 8960 ±537 kPa 175-32 44 B r a k eO i lP r e s u sre (1550psi MAX) (1300 ±79 psi) A-C,NormallyClosed 1200 kPa MAX 700 ±100 kPa A-BNormallyOpen 230-571 Second a r y S t e eirn g P r e s u r e A-C NormallyClosed NormallyClosed (174.0psi MAX) (102 ±14.5 psi) 110.3 ±13.8 kPa 69 kPa MIN 258-083 F u e l D i fefr e n tai l P r e s s u re NormallyClosed (16 ±2 psi) (10psi MIN) 1200 kPa MAX 700 ±100 kPa A-BNormallyOpen 3E-645 0 P r i m ayr S t e e r i n g P r e s s uer (174.0psi MAX) (102 ±14.5 psi) A-C NormallyClosed ¹With increasing pressure the closed condition can be maintained up to 2800 kpa (405 psi), with decreasing pressure the closed condition can be maintained down to 170 kpa (25psi). 114-533
A/C H ( i g h/ L o w ) P r e s u sre
117-773
Hydra u l i c F i let r B y p a s s Per s s uer
Pressure Symbol
Temperature Symbol
Level Symbol
CircuitBreaker Symbol
Flow Symbol
SymbolsAndDefinitions Fuse -Acomponentin an electrical circuitthatwill open the circuitiftoo much currentflows through it. Switch(Normally Open):Aswitch Open): Aswitch thatwill close ata specifiedpoint(temp,press,etc.). The circle indicatesthatthe componenthasscrew terminalsand a wire can be disconnected fromit. Switch(Normally Closed):Aswitch Closed): Aswitch thatwill open ata specified point(temp,press,etc.). No circle indicatesthatthe wire cannotbe disconnected fromthe component. Ground(Wired): Thisindicatesthat the componentisconnected to a grounded wire.The grounded wire isfastened to the machine.
SENR4130 SENR3 581
Ground(Case): Thisindicatesthat the componentdoesnothave a wire connected to ground. Itisgrounded by being fastened to the machine. ReedSwitch: Aswitch whose contactsare controlled bya magne t.A magnetclosesthe t.A contactsofa normallyopen reed switch;itopensthe contactsof a normallyclosed reed switch.
Relay (Magnetic Switch): Arelay is an electrical componentthat is activated by electricity. Ithas a coil thatmakes an electromagnetwhen currentflows through it.The electromagnetcan open orclose the switch partof the relay.
Resistor,Sender andSolenoid Specifications 1 2 8- 79 9 1 1 3 4- 25 4 0
Component Description Soleno ids: Resistor:
Fuel n I jection C AN Data Link
Resistance (Ohms)¹
M
L
L
K
K
J
J
1 4 5- 70 2 8 1 4 8- 23 5 0
S e n d e r: Sol e n oi d :
T /C Temperatur e Va r i a bl e Sp e e d F a n
10 0 0 5 .0 ± 0.3
I
I
1 5 2- 67 6 1 1 5 2- 83 4 0
S o l e n o i d: Sol e n oi d :
O n /Off Pilot Au to Reversing Fan
32.6 ± 1.6 32.6 ± 1.6
1 6 3- 08 7 2 1 6 8- 64 5 2
Sol e n oi d : Sol e n oi d :
2 1 6- 53 3 8
Soleno ids:
AuxLiftRaise Prop Aux LowerProp 1 3 8 2- 9 2 4
H
H
G
G
F
F
E
E
D
D
C
C
B
B
A
A 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Solenoid:Asolenoid Solenoid: Asolenoid isan electricalcomponentthatisactivated byelectricity.It hasa coil thatmakesan electromagnetwhen currentflowsthrough it.The electromagnet can open orclose a valve ormove a piece of metal thatcan do work.
1.06 ±0 ±0.0 5 1 08 - 1 3 2
M
RENR93 18
Sender:Acomponentthatis Sender: Acomponentthatis used with a temperature orpressure gauge.The sender measuresthe temperature orpressure. Itsresistance changes to give an indication to the gauge ofthe temperature orpressure.
T
Par t N o.
FormNumber 177-99 5 3 ( D e no s HDB80A) 197-8820 (Denso HDB95A)
Printed in U.S.A.
²Contactpostion atthe contacts ofthe harness connector.
RelatedElectrical Service Manuals Altern ator:
972H: A7D1-UP A7G1-UP A7J1 -UP
F -1 5 , -Z15
Hig hF u e lT e m p e ar t ur e
E441 E539
966H: A6D1-UP A6 G1-UP A6 J1-UP
F-18 , X-18
L o wE n g i ne O i l P r es s u re
E 3 90
966H and 972H Wheel Loader Electrical System
Cam Speed/Timing (+)
K 97 7 N 9 3 9
T ai /l po si it on L a m p - L ef t R ( oa d Pk g) W / di h t
T9 58
A cr Su p er so r- St a r R t e l a y B a tt e r ei s B ol kc As m .
E 1- 5
On/O f f Pilot Solen o id( Return)
Head L amp H i P ar /k a T l iD/ a h s L/ a mp
BR
X m s nS h i tf So N lo 1 . Or 3
C 1- 5
S en so r - R e a rA xl eO li T em p.
Cam Speed/Timing ( -)
PU P U GN
E 7 48
Condition Hig h F u el P r e ssu re H i g hA i r F i l t e r R e s t rci t i o n
Crank Speed/Timin g((-) C ar n kS pe ed T/ m i ni (g + )
619
7 5
E194
BK WH
6 17
ControlCircuits
E172
E 963 E9 6 5
H-3
S en so r- O l iP re s ur e
D 1- 1, X 1- 1
DumpP ro roportiona So S l o l en o i d
E 96 4 E 9 66
Sensor -L -Lift Position
J 9-
Trans nIput Spd +
E 9 2 0 E 92 1
Li t f Press Sen osr
606
S e n o s r- n I at e k Ma n i of dl Ai rTe m p S e n o s r- Li t f Cy i l n d e r He a d E nd P er su er
D 1- 7, V- 17
A rc S up pr es so r - Se co nd ar y St ee ri ng
Trans nIput Spd -
A C/ Sw To Re rfgi e r a n S t w AC / Cl ut h c To Th er mo ts at Sw
605
Schematic Location
Component
E 4- ,T ,T 4H 6- , U- 6 G-6 , U-6
L 2-
A 1- 4
Arc Suppressor -A -A/C
A ux L ow er P or po rt oi na l So l
Y L GY
Li t f Position Sensor
D- 17
Machine Location
B- 1 3
A cr Su pp er s o r - Qu ci kC ou pl er
T ar ns Ou pt ut Sp d-
W H
6 1 4
E 2 65
BR WH YL
A al m r -B -B ack u p A tel nr a t o r
Trans O utput S pd +
5 2 1
611
E 0 96
E 90 9
G N
5 22
604
Event C Co ode
E 90 8 E 91 9
WH
C529
LightingCircuits
EventCodes Engine Control
E9 0 0
ComponentLocation Schematic Location
Component
E ng ni eD gi ti al S en so r R ( e t ur n)
J 76 4
I mp el m e nt T/ ar ns m i s oi n/ En gi ne E C M
174
P e sr o na lti y M o d uel E n gi n e S pe e d S e n s or
1
H704 H 71 3
175
0 2 53 0 2 61
0
En gine ECM
RENR6332-01 November2006
Description Control Circuits
RD
102 103
0001 0002
S o l e n oi d s:
Dump Prop LiftProp
MAGNETIC LATCH SOLENOID-Amagneticl SOLENOID-Amagneticl atch solenoid isan electricalcomponentthatis activated byelectricityand held latched bya permanentmagnet.Ithastwo coils (latch and unlatch) thatmake electromagnetwhen currentflowsthrough them.Italso has an internal switch thatplaces the latch coil circuitopen atthe time the coil latches.
7.75 ±1.0
LowerProp RackbackProp
2 2 0 8- 2 1 4
S e n d e :r
2 3 7- 22 3 4
S ol e n o id
2 3 9- 11 3 4
Sol e n oi d:
A/C Compresso r Clutch Axle Oil Cooler C lutch Transmission Clutch F u e l Le ev l LeftAnti-Drift Ride Control (3) TiltAnti-Drift S tart Aid
¹At roomtemperature unlessotherwisenoted.
17.6±0.6 9.4 ± 5.0
Harness AndWire Symbols 1 2
33.8
1 2
Deutschconnector : Typical representation ofaDeutschconnector.Theplugcontainsall socketsandthereceptaclecontainsallpins.
PartNumberfor ConnectorPlug
C-C4 AG-C3 130-6795 130-6795
20.0
HarnessConnectorSerializa tionCode:The "C"stands for"Connector"and the numberindicateswhich connectorin the ha rness.(C1,C2,C3,.... .)
AG-C4 111-7898
L-C12 3E-5179
PartNumberFor ConnectorRecepticle
1
325-AG135 PK-14 Socket
Pin
Sure-Sealconnector:Typicalrepresentation ofaSure-Sealconnector.Theplugandreceptacle containbothpinsand sockets. HarnessIdentificationLetter(s): (A,B,C,.. .,AA,AB,AC,...)
Wire,Cable,orHarnessAssemblyIdentification: IncludesHarnessIdentificationLettersandHarness ConnectorSerializatio n Codes
8.7 ± 0.4 Empty:240 -250 F u l l : 2 8- 3 3
Receptacle
5A PinorSocket Number
SingleWire Connector
9X-1123
Fuse (5Amps) Component PartNumber
Plug Harnessidentificationcode: Thisexampleindicateswire 135 in harness"AG".
2 Ground Connection
200-L32 BK-14 CircuitIdentification Number
WireColor
WireGauge
1 L O V 1 e 0 - g a P 2 6 3 3 3 6 R N E R
ComponentIdentifiers (CID¹) Module Identifier (MID²) Caterpillar MonitoringSystem (MID No.030) CID
Component
Wire Description Wire Wi e r C ol o r Number
619 633
GN BU
Head Lamp Low Attach Lighting Ckt
Key Sw Ti t lL/ f i P t o s tii o n Se n so sr
646 6 4 7
OR G N
Light Sw To Front Flood Relay L gi h t Sw To Re a r Fl o dR e l a y
108 110 112
BU RD PU
Air Se at Engine ECM Main Power R ly O utput
1 1 3 1 1 4
O R R D
O p r Mo nP a n e lV m i sB +S w i ch t e d Wa nr ni gH o r n( of wa r dr )
6 6 3 6 9 1
V olat ge C on e v tr er s/ Ra di o F or nt R / ea r Wi pe r/ Wa sh er
A 62 9
B U
F or nt Ro ps Hi dF ol od A tt a c hm en t ControlCircuits
Voltag eConverter Memory B a ck Al a r mTo L a mp
720 7 2 7
P U G N
Xmsn Brake Sw S u p p l e me nta S l et e r ni gMo ot rRe al y
Dome Lamps AC
728 751
BU GN
Suppleme ntal Steering Cont Sw Xmsn Sh ift Sol No. 1 Or 3
RD PK
Product Link ECM/Radio Xmsn Ctrl
752 754
YL BU
Xmsn Shift Sol No. 2 Xmsn Sh ift Sol No. 3 Or 1
127 130
OR RD
Front Cab lFood L amps Stop Lamps
Control - D immer
1 31 1 3
E n g i n eC o o l a n t T e m p ear t u r eS e n s o r Torque C o n v e retr O i l T e m p e rature Se nsor D at aL ni k
0 2 63 0 2 71 0 32 4
S e ns o r P o w e r Su p ply A ci to nA l ar m A ct oi nL am p
0600 0 8 19
Hydra u l i c O i lT e m p ear t u r eS e n s o r Dip s l ay D a at Lni k
1 15 1 18
P K GY
0 8 21 0826 0830
Dip s l ay P o we r S u p l y T / CO i l T e m p e r autr e S e nsor B r a k eO i l T e m p e r autr e S e nsor
120 1 2 1
RD R D
122 124
RD GN
125 126
Component
0 24 8
C AT D at aL ni k
0364 0 59 1
Head E nd LiftC ylinde r P r e s s uer S e n s o r P CS E EP RO M
0769 1 9 64
Rod En d L i f t C lyi n d e r P r e s s u r eS e n s o r L i tf P o istoi nS e n s o r
Electronic TransmissionControl System (MID No.081) CID
Component
0 0 41 0168
8 Vo l t D CS u pp l y E l e crti c a lS y set m V o l t a g e
0177 0 1 90
T r a nm s i s soi n O i l T e m p e r a t uer S e n s o r E n gin e S p eedSe n s or
0 2 62 0268 0 3 67
5 Vo l t D CS u pp l y Progra m m e dP a r a m e terFault R i deC o n rt o lS wit h c
0368 0 44 4 0562
T r a nm s i s soi n A u t oM / anual Sw itch Sa t rt R el ay E l e crto n i c M o n itorin g Syste m
0585 0 5 90 0 5 96
T r a nm s i s soi n O upt u t S p e e dS e n s o r 1 E n gin eC o nt r o lM o d uel Imp l e me n t Co nrto l
0 6 23 0627 0672
D i er ci to na S l with c Parkin g Bra ke P ressu re Sw . T r a nm s i s soi n I n p u t S p e e dS e n s o r
0673 0702
T r a nm s i s soi n O upt u t S p e e dS e n s o r 2 L e v e r S wt ic h( T r a n s m issi o nS h i f t i n gD/ i r e tci o n )
0737 0793 0794
L e f t B r ae k Ped a l P o ist i o nS e n s o r P r i m ayr S t e e r i n g P r es u r e S w itch Second a r y S t e eirn g P r e s s u r eS w i t h c
0795 0 9 67 1 3 26
Second a r y S t e eirn g R e l a y Mah c i ne A p pli ca toi n E C M Lo c at i o n Cod e
1400 1 4 01 1 4 02
R e a r A x l eO i lC o o l e r S oel n o i d Ree v r se S o l e n odi F ow r adr S o l e n odi
1 4 03 1 4 04
F o ur t h S p e e d Cul t h c T hri d S p e d Cul t h c
1 4 05 1 4 06 1521
S e co n d S pe e d Cul t h c F i sr t S p e e d Cul t h c P a r t -h Tr o t telA u t o s h itfS e l e c t o rSwitch
1 9 60 2129 2274
I g nitoi nK e y R e a d er R i d eC o n t r o l So l e n o i d( 1 ) T r a nm s i s soi n D i r etci o n S w itch #2
2347 2684
R i d eC o n t r o l So l e n o i d( 2 ) R i d eC o n t r o l So l e n o i d( 3 )
Electronic ImplementControl (MID No.082) CID
Component
0 0 41 0168
8 Vo l t D CS u pp l y E l e crti c a lS y set m V o l t a g e
0268 0296 0350
Progra m m e dP a r a m e terFault T r a nm s i s soi n C o n tor l L i f t L i nakg e P o s i toi n S e n s o r
0351 0352 0353
T i l t L i nakg e P o s i toi n S e n s o r L i f t L ee v r P o s i toi n S e n s o r T i l t L ee v r P o s i toi n S e n s o r
0 3 54 0 3 55 0 3 56
R asi eS oel n oid L o we r S oel n oid Dum p S o l en odi
RENR6332-01 November2006
D es cr p i it on
LightingCircuitsContinued
Hd Lmp MSS /Product L ink
RD W H
0110 0177 0 24 8
CID
Wire W ri eC ol or Number
RD YL
105 1 0 6
F u el L e e v l S en d er E n g i n eO i l P ressu re Se nsor
PayloadControl System (MID No.074)
De sc irp it on PowerCircuits
102 104
0 0 96 0100
651 661 662
PK GN YL G Y G Y
Flood Lamp Rear Tachometer Lamp Speedometer Lamp G a g eL a m p s Wa nr ni gL gi h t sTo B er a ke r
Component Location Schematic Location
Component
Machine Location
Schematic Location
Component
E 1- 5
A al m r -m I pl em en tA ud bi elA l er t
E 1- 5
Alarm -Quick C oupler
D-1
L 14 - , Y -14
Switch - Autodig Mode
D-3
L-14 , Y-14
A cr Su pp er s or - Fo w r ar d H o nr
I 7-
H 1- 3 ,X 1- 3
S w i ct h -A ut o d gi M o d e Se el ct
C 1-
L 1- 4 ,Y 1- 4
C on rt ol -C at er pi ll ar M on ti or ni gS ys et m
H- 1 2 ,V 1- 2
S w i ch t - A u ot Ma / n u a l Ge a r Se el tc
Machine Location
A al m r - A ct oi n
H 1- 2, V- 12
E -7
D 4-
S w i ct h- Au ot di gK ci o k ut Se t
L-1 5 , Y 1- 5
L 1- 4, Y- 1 4
C 1-
S wi ct h- A ut od gi rTgi ge r
L 1- 4, Y- 14
G -7
Connector Location
H -1 3, X -1 3
755 762
OR YL
Xmsn Sh fti Sol N o. 4Or 5 Bucket Positioner S ol Sw
B R R D
F al sh er / Fr on /t R e ar Fl oo dR e l ay s L H / R H Da h sI n d ca i ot rP a n el s
E 70 1 E 7 0 7
P K G N
A ut oR di eC on rt ol Sw CM SD sp i al y+ v
C on rt ol - I mp el me nt C on rt ol S ys et m
134 1 35
YL B U
Rear CabF ood l L amps C o n ve tr er 12V o tl Sw t i h c edO u t
E708 E 73 5
PK P U
CMS D ispl ay C lock C M ST a ck S/ er vM rtO / do me et r S e el ct
C on rt ol - Pr o d u ct L ni k( G a t ew ay )
136 1 3 8
GN G N
SupplementalS eering t A u to L u b eP u mp To P C S
E746 G 7 4 6
GN W H
Downshift Sw( N.O.) X m s nC o n T t o r q u eL m i ti
C on e v tr er - Vo tl ag e( 10 A)
1 3 9 1 4 1
R D P K
L HTa li/ Cl e a ar n ce L a m p s B e a oc n/ He a te dMi rr o r s
G 7 5 0 G 7 5 5
B U G Y
X m s nC o n F t w d S w To G n d X m s nC o n R t e v S wTo G n d
D sp i al y- Gr o e n e e v dlA uto ul b e
F 6-
L 1- 5,Y 1- 5
S w i ch t- F o r w a drH or n
I- 1 5, W 1- 5
C ON N2 5 S e r vi ce M od eP ul g
E -1 5
H 1- 2, V 1- 2
1 42 1 47
B U R D
C o n ve tr er 12 Vo tl Sw t i h c ed O u t E C A P C / en et r D a sh I n d ci at o r P a n el
G 76 0 G 76 1
W H Y L
X m s nC on tS pe ed 2S wT oG nd X m s nC o nt Sp ee d 3 S w T oG nd
Flasher -24 V
E-15
H-12 , V-12
Switch - o Frward Horn 2
G-7
H-13 , X-13
CONN 26
L -13
H-12 , W-12
1 4 8 150
R D OR
V o l at ge Co n ve tr e r Me m o yr Bat (+)
G 7 6 2 G763
B R PU
X m s nC o n S t p e e d 4 S w To Gn d Xmsn C ont Neut Sw o T Gnd
1 5 1 1 64
G N W H
A lx eO l i Co o l e r Cl u t hc H d y or C t lrW l t P o w e tr ar ni C rt l
G 7 6 4 G 76 6
P K G N
X m s nC o n P t a r kB ar e k Le e v rS wTo Gn d I m p C l on tS wT oG nd N . O.
WH GN G N
Impl Cont S w To Gnd N.C. Xmsn Cont Speed 1 Sw To G n d X m s nC o n R t e mo et F wd Sw o T Gn d
168 170 1 7 4
GN RD R D
Quick C oupler Transmission ECM Un w s i ct h e dB u s Po w e r
G767 G768 G 7 8 7
199 A 1 0 5
RD O R
Hood Actuator 8 Vo t l Se n so rS u p p l +y
G788 H 7 0 2
YL P U
Xmsn Cont R emote Rev Sw To Gnd Im p l Co n t Re ev sr ni gF a n Sw (N O . ).
200
BK
GroundCircuits Main C hassis
H 7 03 H708
YL OR
Imp l C o n t Re v e r sni gF a nS w ( NC. . ) Impl Cont Kickout Sw 1
2 0 1 202
B K BK
O p e ar ot rM o n toi rRe ut nr XmsnC trl
H 7 0 9 H710
B U PK
Im p lC o n K t ci ok u t Sw 2 ImplC ont Lift Lever P osition
2 10 2 50
G-3
Schematic Location
Machine Location
CONN 14
E-18
D-10 , U-10
C 6-
L -1 5 Y , -1 5
CONN 15
D-18
H 1-
G 1- 6, X- 16
CONN 16
C-18
F 7-
H 1- 3, X- 13
CONN 17
B-18
F 8-
H 1- 3, X- 1 3
CONN 24
F-15
D -6
S wi ct h- B uc ke /t Fo rk S el ec t
H 1- 2, W- 12
S w i ct h- Do wn h s fi t
K 1- 5
H 1- 2, W- 1 2
S w i ch t - Fi n e Mo d u al i t o n
D oi d e - Bl o w e r Mo ot r
I-16 , W -16 L -1 4, Y 1- 4
S wi ct h- C at M on Sy sM od eS el ec t S w i ct h- Di mm e r
K -1 5, Y 1- 5
E -2
I- 3
H 1- 2, V- 12
S w i ct h- Fr on tI nt e r mi tt e n tW pi er W / as he r
D 5-
L 1- 5, Y- 15
CONN 27
H-12
H-12 , V-12
H 1- 2, W- 1 2
S w i ch t - Ha a z dr L a m p
H- 3
I- 1 6 , W- 1 6
CONN 28
H-9
H-13 , X-13
L-14 , Y -14
CONN 29
J-1
I-16 , W -16
Switch - H eated Mirror
E-2
G-9
H-13 , X-13
Indicator -Center Dash
Guage - Q u ad
K-1
I-16 , W-16
Switch -HID Lamp
J-3
I-16 W , -16
CONN 30
F-9
H-12 , V-12
I n d ca i ot r- Le tf Ha n d Pa n e l
K 1-
I 1- 6, W- 1 6
S w i ch t -HV A C S e el tc
D- 6
L 1- 5, Y- 1 5
CONN 31
D-8
L-15 , Y-15
I nd ci at or - R gi ht H a n dP an el
K -1
J oy tsci k- Im pl em e n tC on rt ol
I 7-
Keypad - WLPCS
I -1 6, W 1- 6
S wi ct h- H VA CT em pe ra ut re S el ec t
H 1- 3, X- 13
C-7
D 5-
S w i ct h- Im pl em e n tL oc o k ut
K-15 , Y -15
G 8-
Switch - Key Start
L -1 5, Y 1- 5
CONN 33
I-16 , W -16
CONN 34
L 1- 4, Y- 14
CONN 35
L-14 ,Y-14
CON N36
D-1
L-14 ,Y-14
CONN 37
I-3
I-16 , W-16
S w i ch t - Re a r Wi p e /r W a hs e r
E 4-
L 1- 4, Y- 1 4
CONN 38
I-3
I-16 , W-16
CONN 39
H-3
I-15 , W-15
Radio -Product Link
K-11
G-12 ,W-12
Switch -Remote FNR
H-7
H-13 ,X-13
C-15
H-12 , V -12
Switch - R eversing Fa n
D-1
L-14 , Y -14
CONN 40
L 1- 4, Y- 14
C O N N4 1 S er vi e c To ol Co nn
I m p C l on tL ow er Pr op or it on alS ol Impl Cont Pilot Press Sol
R e l a y -F o r w a dr H o r n
C 1- 5
R el ay - H e ae t dM ri ro rs T m i er
D -1 5
H718 H 7 2 2
GY G N
Impl Cont Tilt Cyl Position X m s nC o n L t B . ar e k P e d a P l o s tii o n Se n s
Relay -Rear Floodlamp
C-15
H-12 , V -12
R es si ot r A / C( 1)
L 1- 4
H 1- 2, W- 12
S w i ct h- Th ri dF u n ctoi nC on rt ol lFow
K 3-
I 1- 6, W- 16
Transmission Ctrl BImplement Return
H728 H729
GN WH
CCS Auto 3 CCS Auto 2
R e si tso rA C/ ( 2 )
L 1- 4
H 1- 2, W- 1 2
S w i ch t - Th ri d u F n c i t on Di ev tr e r
G 8-
H 1- 3 X , 1- 3
R es si ot r -B ol w e r M o ot r
K 1- 6
H 1- 2, W 1- 2
S w i ct h- T ar ns m i s oi nG ea r S e el tc or
H 7 3 0 H 79 5
B R PK
CC SA u t o1 4T hr ot lt e S e n so r Co mm on
R es si ot r -C AN A
K 6-
I 1- 6, W- 16
S w i ct h- Tr an sm si is on Sh fiet r A s e s mb yl
BR B U
T ar ns mi ss oi nS wi ct h/ Se ns or R et ur n# 1 Axle Coole rClutch
S en so r - Le tf H a n dB ra ke P ed al
K ey S wt oT ra ns mi s oi nC on rt ol Main Power Relay C oil
J 76 4 P739
Horn Relay C oil To Sw B ac u k pA al m r La m p Tr av el Al ar m
Y794 Y 79 5
OR G N
Expanded Can Data Link + E p x an de dC an Da at Li nk -
GY PU
Warnin g H orn (forward) Key S w 'C' T erm.
818 819
B R GY
Serial Data ( ransmit) t Serial Data (receive)
A307
GY
Throttle P osition MonitoringCircuits
G848 G 85 0
GN B U
Led D rive r 2 I n l et Ai r H e at e r
403 4 1 0
GN W H
Altern a tor (R) Term. O p r Mo nA tcoi nA al m r
J807 J 8 0 8
BK B K
Proportion R a l eturn (1-3) P or p o tir o n alR e tu nr ( 4 /R e v)
411 4 1 3
PK B R
Opr Mon Master O p r Mo nFu e l P er ss .
J809 J 8 1 3
BK B K
Proportion a l Return (Forward) Im p l e me nt Pr o p o r ito n a l Re ut nr
4 16 4 17 419
O R G Y YL
S up pl em en at lS et er ni gS w P ir m a ry St e ir ng S w Opr Mon Parking Brake
J 81 4 J 81 5 J887
B K B K P U
I m p el m e nt P or po troi na lR e t ur n R di eC o n rt ol S ol en oi ds Pr op or it on alR et u r n Axle Coole rRelay
4 2 6 430
B R BU
O p r Mo n P o w e rTr a i nO i Fl l iet r Opr M on Air F ilter
T8 5 2 T853
G Y OR
A u to Di g M o d e Sw P . o s #1 Auto Dig Mode Sw. P os # 2
4 3 2 4 36
P K O R
O p r Mo nB ar ek P er ss (. o i )l O pr Mo n Po w e r rT ai n Oi l Fi tl er Ju m p er
T8 5 4 T 8 5 5
Y L B U
A u to Di gM o d eS w . Po s# 3 A ut o Di g Mo de S w. Po s# 4
439 4 4 2
YL G Y
Lamp Indicator Hy dS sy et mT e mp Ga g e
T856 T8 5 7
WH G N
Auto Dig Mode Select Sw. Po s#1 A u to D i gM o d eS e l e c S t w . Po s# 2
4 4 3 447
Y L PK
P o we rT ar ni T e m p Ga g e Fuel L evel Gage
T8 5 8 T859
G Y WH
450 4 53
YL P K
Tach S ender +( ) S up pl em en at l St e ir ng F au tl La m p
T860 T 8 6 1
OR Y L
Auto Dig T rigger S w. N.O.) ( A ut o Di g Tr gi ge rS w. (N C. ).
Y L YL
P ir m a yr Ste e r ni gL a mp CMS Display D ata
T8 6 2 T863
B U P U
A u to Di gA u t oT ir g e r n I d i ac ot r Auto Dig Record Mode Indicator
P CS C u st o m e r D at aC o nn
Relay -Axle Cooler
CMS Clear Im p l e m e n C t t lr B -
OR B R
L-11 , Y-11 L-16 , Y-16
C-2
Switch -Quick Coupler
I- 1 2 , V- 1 2
R el ay - Fo w r ar dC ab F ol od al mp
C 1- 5
S e n o s r- 3r dL e ve rP o si i t o n
H 1- 2, V- 12
S w i ct h- Ri de C o n rt ol
H- 1 2 , V- 1 2
C 2-
S w i ch t - Ru n ni gL a m p
H 1- 2, V 1- 2
K 3-
S wi ct h- S ec on da ry S et er ni gT es t
H-1
F- 7
H- 1 3 , X- 1 3
S w i ch t - Tu nr S gi n a l
H 1-
G -1 5, W 1- 5
S wi ct h- V ar ai bl eS hi tf C on rt ol
H- 1 3 , X- 1 3
Ta h c S/ pe e d o me et r
G- 1 5 , V-15
Thermostat
S e n o s r- Li tf Le ev rP o si i t o n
G 7-
Sensor -Th ottlle r Positio n
G-1
S en so r- Ti tl Le e v r P o isit on
G 7-
H 1- 3 X , 1- 3
D -2
Switch - Stop Lamp
I 3H 2-
966H and 972H Wheel Loader Electrical System 966H: A6D1-UP A6G1-UP A6J1-UP
L-11 , U-11
Switch -Neutral O verride
H-17 W , -17
P ay ol ad M on - S sy et mG nd CMS S ervice
GN
L-7 L-7 K -7
H-12 W , -12
I-1 K 1- 4
C o n ve tr er Ou pt ut (2 4/ 1 2 V o tl ) P ay ol ad M on - Cu st o m er G n d
OR YL
CONN 32
H 1- 3, X- 13
L-16
Motor -Front Wiper
S w i ct h- L f i T t li tK ci o k ut Se t
G-3
L 1- 5
Motor -Blower M o to r- Re a r Wi p e r
H 1- 2, W- 12
E 1-
M ot o r - Bl en dD oo rA ct ua ot r
BK BK
322 326
I-12 , V-12
B 1- 5 K 1- 5
BK B K
320 3 21
I-12 , V-12
F us e- Bl oc k
B K BK
3 06
I-12 , V-12
H-12 , V-12
F u se - Th e r m a C l u t Ou t
B K B K
3 07 308
ConnectorNumber
L -1 5, Y 1- 5
2 51 290
O R BR
I m p C l on tT li tL ev e r P o s t ioi n I m p C l on tL fi tP or po troi na lS ol
Switch - Beacon S wi ct h- B ol we r Fa nS pe ed
G -1 2 W , 1- 2 H 1- 2, W- 12
F 1- 5, G- 16
291 A 2 7 2
H 71 4 H717
G N P K
H-12 , V -12 H -1 2, U 1- 2
J -1 1
D 7-
C on rt ol - Tr an sm si is on Co nt or lS sy et m
A273 C216
BasicMachineCircuits S at rt er R el ay C oi l o t T ra ns mi ss oi n Co nt ro l
H 71 1 H 71 3
D-15
L 1- 8
F -1 4
C on rt ol - P ay ol ad C on rt ol S ys et m
K -7
L-16 , U-16
D-7
K - 15 , Y - 15
F-3
I-16 , W-16
F 2-
I 1- 6, W- 16
I- 1 6 , W- 1 6
CONN 42
H-1
G-16 , X-1 6
L -1 4, Y 1- 4
CONN 43
G-1
G-15 , W-15
G 15 - ,W-15
I 1- 5, W 1- 5 I 1- 5, W- 15
I- 2
I- 1 5 , W- 1 5
D -3
L -1 4, Y 1- 4
J- 1
I- 1 6 , W- 1 6
K-15
H-12 W , -12
Volume 2: Cab ©2006 Caterpillar AllRightsReserved
A u to D i gK ci ok u t Se S t w . (N. O . ) Auto D ig K ickout Set Sw. N ( .C.)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 BB
AA
AA
Symbols
R a kc b ac k S ole no i d P iol t P er s su rSe o l e n oid
0364 0 3 65 0487
L i f y C yi ln d e r H e a dE n d O i l Per s s uer S e n s o r K i ck o u tSetSw i t ch 3 r d L e v e r P o ist i o nS e n s o r
C 4 1 4 E416
B U PU
CM SD si p l a y Lo a d Lift C yl Press S ensor
T8 6 4 T866
B R YL
A u to Di gO p e ar ot rT ir g e r n I d i a c ot r Dump Detent
0490 0491 0492
Imple m e n t L o coku t S w i t h c 3rd F unctio n F ow r a r dS o l e n odi 3rd Fu n c t i o nR e a r w a rd Sole noid
E455 G479
BR WH
Hydraulic Oil Filter Prelube Indicator
T869 T870
WH B R
Fine Modu ation l Sw 1 Fine Modu ation l Sw 2
G 4 8 0 G 48 5
G N B U
Fu e lL e v e lL o wI n d ca i ot r O pr Mo nF or nt Br ak eT em pe ar ut er
9 0 9 01
P U W H
X m s nS h i tf So No l 5 . O r4 X m s nS hi tf So lN o . 6
0562 0590 0965
C a t epr i l l a r M o n itorin g Syste m E n g i n eE l e crto n i c C o n trol M odule A u t o dgi Dgi M o de Sw itch
G 48 6
G N
O pr Mo nR ea r B r ak eT e m pe ar ut er AccessoryCircuits
9 10 9 4
Y L O R
X m s nN eu it e z r O v e r ir deI n di ca ot r Ca D t a ta L ni k+
0 9 67 1187
Mah c i ne A p pli ca toi n C o n tni u o u s F l o w R o ce krSwitch
500 501
BR GN
Wiper -Front (Park) Wiper -Front (Low)
945 961
BR BR
Cat Data L ink Selector S w
W
W
1324 1 3 25 1 3 26
A u t o dgi O p e r ai o t n Mode S electSw itch A u ot dgi T rgi g er S w ict h E C M Lo c at i o n Cod e
502 503
OR BR
Wiper -Front Hi) ( Wiper -Rear (Park)
Fork P osition Select Autoshift- Auto/Manual S w2
V
V
504 505
YL BU
Wiper -Rear L( ow) Wiper -Rear H ( i)
976 977
OR YL
Ride Cont Solenoid 1 Autoshift- A uto/Manual S w 1
1592 1639 1718
A u t o dgi K i c k o u t S e t S w i thc M a c hni e S e c u rt iy S y set m E C M F i n eM o d u l a t i o nS w i thc
506 507 508
PU WH PU
Washer -Front Washer - Rear Radio Speaker -Left
987 A958 A982
WH WH B R
Third Fun ction Diverter S ol Park Brake Sol Engine Throttle Cont
U
U
T
T
2326 2328
L o w e r A ni t- D r ti fS o l e n o i dV a l v e D u m pA n t i - D riftSole n o i dV a l v e
5 0 9 511
W H BR
Ra d i oSp e a e k r- Le t f (C o m m o m ) Radio Speaker -Right
E 9 0 0 E901
W H GN
Tr a n sOu pt u t Sp d+ Trans Output Spd -
5 12 515
G N GY
R a d oi S pe ak er - Ri gh t( Co mm o n ) Blowe r M otor H ( i)
E 90 6 E907
O R GY
T ar ns Ou pt ut Sp dQ + Trans Ou tput S pd Q-
S
S
516 517
GN BU
Blowe rMotor (Medium) Blowe r M otor L( ow)
E908 E909
B R WH
Trans nput I Spd + Trans nput I S pd -
R
R
5 1 8 5 21
O R Y L
Ha a z dr Fl a s h e rT oS w A C/ S wT oR e f ir ge ar nt Sw
E 9 1 7 E 91 8
W H G N
Im p l e me nt Lo kc o u S t wTo Gn d( N . O .) I m p el m e nt Lo kc ou tS wT oG nd ( N . C . )
Q
Q
5 22 5 3 7
W H G N
A C/ C ul ct hT oT h em r os at tS w Tu nr Si g n a l Sw To Fl a s h e r
E 91 9 E 9 2 0
Y L B R
A ux Lo w e r P r op or it on alS ol A u x Li t f Pr o p o r ito n a l So l
P
P
538 5 39
BR B U
Hazard Indicator T u r nS gi na lI n d ci at o r B a s ci R / gi ht
E921 E 92 2
PK G N
Rackback Proportional Sol D u m pP or po troi na lS ol en oi d
O
O
540 5 50
WH G Y
Turn S gnal i Indicator Left A ux Hy dL ef-t Di cs on ne tc To S w
E955 K 92 7
OR B U
PCS Keyp a d Data O n/ O f fP li ot So el no di Re ut nr
567 5 92
WH B U
A/C Sw u Jmper D C / D C C on e v tr er Po we rO ut p u t
K977 N 93 9
PK G N
Trans Oil Temp Sensor R di eC o n rt ol S o el no di 2
N
N
A 5 1 3 A523
R D PU
DC D/ C Co n ve tr e r Me m o yr Ou pt u t Temp Potentiometer Pos 1
N 9 5 7 N959
P K PK
Rx d -Co m m #1 Rxd - Comm #3
A524 A525
BR GN
Temp P otentiometer Pos 2 Temp Potentiometer Pos 3
N960 N963
OR OR
Txd - Comm #1 Txd -Comm #3
ProductLink Radio (MID No.122) CID
Component
0168 0254
E l e crti c a lS y set m V o l t a g e E l e crto n i c C o n t r o lM o d uel
0 2 69 1250
S e ns o r P o w e r Su p ply R e m oet C o m m u n ia c t i o nM o d uel
1 2 51
A l et r na t or " R " Te r min al
Machine Security System (MID No.124) CID
Component
0168 0 24 8 0817
E l e crti c a lS y set m V o l t a g e D at aL ni k ECMInte r n a lB a c k u p Ba ttery
1391 1392
TheftDe terentOu t p u t D r ievr # 1 TheftDe terentOu t p u t D r ievr # 2
¹The CID isa diagnosticcode thatindicateswhich circuitisfaulty. ²The MID isa diagnosticcode thatindicateswhich electroniccontrol module diagnosed the fault.
Failure Mode Identifiers (FMI)¹ F MI No .
F ai u l e r De sc ri pt oi n
0
D a t av a l i d b u t a b o v en o r m aol p e r ai to n a l ar n g e .
1
BU B R
Dtr -Comm #1 Dcd - C omm #1
K
K
Signal Gnd - Comm #1 Signal Gn d- Comm #3
J
J
C 5 4 3 C 58 3
G Y G N
A u x He a te rB ol w e r + 24 vR el ay To A C / Co nt or l M o du el
P 9 1 0 P 91 5
B R P K
S e co n d a r yS et e r ni gTe ts Sw I n p u t X m s nN e ut ar lnI di a c ot r
I
I
H
H
G
G
F
F
P U B R
Te m p Po et n t oi m e et rP o s 1 Te m p P o et n t oi m e et rP o s 2
P 9 1 6 P 9 4 5
O R O R
X m s nN e u rt a l S w tci h A n ti D r fi S t o l -S i t kc
G N
603
PK
Te m pP o te n t oi m e et rP o s3 LightingCircuits Rotary B eacon
P 9 4 6 P 9 76 P990
B R BR BR
A n ti Dr f i S t o l -B o m Q uci k C o u pel r S wT oL o wP r es s u r eS o l Start R elay C trl Return
5
Curre n t b e l o wn o r m a l orope n icr c ut i.
6
Curre n t a b o v en o r m a l orgrou n d e dc i r c ut i.
OR YL
Stop Lamp Turn Lamp - Left
T901 T902
YL PK
MSS Exciter Coil In MSS E xciter Coil Out
Mecha n i c a sl y set m n o t r e s p o n d i n gp r o p elry . Abnorm a l rfe q u e n c y , p u le s w i d t h , o r p eiro d . A bn or ma l u p d at e. A b no r m a l r at e o f h c a ng e . Failu r e m o d en o t i d e ni tf i a bel . Bad d e vci e o r o c m po n en t . O u t of c ailb ar toi n .
14
P a ar m e t e r af iul r es .
15
P a ar m e t e r af iul r es .
16
P a ar m e terno tava i l ab l e .
17
Mod ule n o t r es p on dni g .
18
S e ns o r u s p pyl f a u lt.
19
Con d i ito nn o t m et.
20
P a ar m e t e r af iul r es .
¹The FMIisa diagnosticcode thatindicateswhattype offailure hasoccurred.
L
YL BR
604 605
9
M
L
GN GN
F5 2 5
7
M
N970 N973
F5 2 3 F5 2 4
Th ri dFu nct oi nC o n rt o l Fl o wS w i ch t Th ri dFu nct oi nC o n rt o l Fl o wS w i ch t
Temperature Symbol
Function
3 E - 5 4 6 4
A C/ Th e r m o tsa t
Level Symbol
Flow Symbol
CircuitBreaker Symbol
SymbolsAndDefinitions
OffMachine SwitchSpecification Part No.
Actuate
Deactuate
- 1. 1 ±0 8. C °
2 2. ± 0 8. C °
( 30 ±1 4 . F °)
( 36 ±1 4 . F °)
Contact Position
Fuse -Acomponentin an electrical circuitthatwill open the circuitiftoo much currentflows through it.
NormallyClosed
Switch(Normally Open):Aswitch thatwill close ata specifiedpoint(temp,press,etc.). The circle indicatesthatthe componenthasscrew terminalsand a wire can be disconnected fromit. Switch(Normally Closed):Aswitch thatwill open ata specified point(temp,press,etc.). No circle indicatesthatthe wir e cannotbe disconnected fromthe component. Ground(Wired): Thisindicatesthat the componentisconnected to a groundedwire.The grounded wire isfastened to the machine. Ground(Case): Thisindicatesthat the componentdoesnothave a wire connected to ground. Itisgrounded by being fastened to the machine. ReedSwitch: Aswitch whose contactsare controlled bya magnet .A magnetclosesthe contacts ofa normally open reed switch;it opensthe contacts ofa normally closed reed switch. Sender: Acomponentthatis used with a temperature ropressure gauge.The sender measuresthe temperature orpressure.Its resistance changesto give an indication to the gauge ofthe temperature orpressure. Relay (Magnetic Switch): Arelayis an electricalcomponentthatisactivated byelectricity. Ithas a coil thatmakes an electromagnetwhen currentflows through it.The electromagnetcan open orclose the switch partofthe relay.
Resistor,Sender andSolenoid Specifications Part No.
N979 N981
Volta ge be l o wn o r m aol r s h o r t e d low .
T
Pressure Symbol
T
Flasher To Indicator Lights Lift Pr ess Sensor
D a t ae r r a tci , i n t em r itte n t , o r i n c orre c t .
8
X
Lift Po ition s Sensor Heated Mirror Power
Volta ge ab o v en o r m a o l r s h o ret d hgi h .
12
X
BU GN
D a t av a l i d b u t b e l o wn o r m aol p e r ai to n a l ar n g e .
13
Y
PU GY
4
10
Z
Y
A541 C529
2
11
Z
C530 C542
3
Printed in U.S.A.
Harness And Wire Electrical Schematic Symbols
BB
0 3 57 0 3 58
4 8 4 C413
964 973
972H: A7D1-UP A7G1-UP A7J1-UP
Component Description
9 G- 19 50
R es si ot :r
134-2540
Resistor:
Resistance (Ohms)¹ Overall:2.0 ±0.1 Tap 1.0 ±.05 120
B ol w e r M o ot r S p ee d CAN
Solenoid:Asolenoid isan electricalcomponentthatisactivated byelectricity.It hasa coil thatmakesan electromagnetwhen currentflowsthrough it.The electromagnet can open orclose a valve or move a piece ofmetal thatcan do work.
¹At roomtemperature unlessotherwisenoted.
MAGNETIC LATCH SOLENOID-Amagneticlatch solenoid isan electrical componentthatis activated byelectricityand held latched bya permanentmagnet.Ithastwo coils (latch and unlatch) thatmake electromagnetwhen currentflows through them.Italso hasan internal switch thatplaces the latch coil circuitopen atthe time the coil latches.
HarnessAndWireSymbols 1 2
Title M a c hi ne S ec u r ti yS sy et m:
6 0 6 6 0 8
G Y G N
Tu nr L a m p- Ri g h t Fl o dL a m p- Re a r
T9 6 9 T9 7 0
Y L G Y
6 1 0 611
O R PU
He a dL a m pB a s ci Head Lamp Hi
X 9 7 2 X973
G N B U
P a r T t h or ttel A u t oS h i tf Po isi t o n1 Part T hrottle Auto Shift Position 2
E
E
P o we rT ar ni C o n tr ol :
6 1 4 615
P U YL
P a r /k T a l iD/ a sh L/ a mp Cab Flood Lamp/Rops
X 9 7 4 X998
B R B R
P a r T t h or ttelA ut oSh f i P t o si i t o n3 Digital Sen or s Return
D
D
C a t er pill ar Mo ni ot ir ng S sy et m:
617
BR
T al i/ po sti i o n Lam p - L etf( R oa d Pk g /) Wdi t h
C
C
P or d u tc Li n k Ra d i o :
I m p el m e n t Co n tr o l :
P ay ol ad C o n rt ol S sy et m:
B
B
A
A 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1 2
Deutschconnecto r: Typical representation ofaDeutschconnector.Theplugcontainsall socketsandthereceptaclecontainsallpins.
Sure-Sealconnector:Typicalrepresentation ofaSure-Sealconnector.Theplugandreceptacle containbothpinsand sockets. HarnessIdentificationLetter(s): (A,B,C, ...,AA,AB,AC,...)
Wire,Cable,orHarnessAssemblyIdentification: IncludesHarnessIdentificationLettersandHarness ConnectorSerializatio n Codes
RelatedElectrical Service Manuals
HarnessConnectorSerializatio nCode:The "C"stands for"Connector"and the numberindicateswhich connectorin the ha rness.(C1,C2,C3,. ....)
FormNumber R EN R 2 46 2 R E N R 7 9 1 1
S EN R 1 39 4
AG-C4 111-7898
Pin
Socket
L-C12 3E-5179
PartNumberFor ConnectorRecepticle
1
325-AG135PK-14
R E N R 8 8 4 6 R E N R 8 8 5 8
R EN R 6 29 3
PartNumberfor ConnectorPlug
C-C4 AG-C3 130-6795 130-6795
Receptacle
5A Pin orSocket Number
Single Wire Connector
9X-1123
Fuse (5Amps) Component PartNumber
Plug Harnessidentificationcode: Thisexampleindicateswire 135 in harness"AG".
2 Ground Connection
200-L32 BK-14 CircuitIdentification Number
WireColor
WireGauge
2 L O V 1 e 0 - g a P 2 6 3 3 3 6 R N E R
