C18 ELECTRONIC DIAGRAM.pdf

FRONT VIEW

RENR7934-01  March 2006

Fuel Temperature Sensor  P105

Fuel Pressure Sensor  J209

InjectorHarness Connector  P300

Turbo Outlet Pressure Sensor  (Intake Manifold Air) J200

Harness And Wire Symbols ConnectorReference Designator 

Intake Manifold  Air Temperature Sensor  P103

P174 1306795

Pin SingleWire Connector 

High FuelP ressure

E194

High Engine Oil Temperature

E198

LowFuelPressure

E199

Electronic Control Module (ECM)

ECM Ground Strap

ECM Connector  P2/J2

High Exhaust Temperature

E197

Primary Engine Speed/Timing Sensor  (Crankshaft) P401

Low Coolant Temperature

E 2 55

D i ag no sitc R es et

E264

Emergency Stop Activated

E360

Low Engine Oil Pressure

E361

High Engine Coolant Temperature

E 3 62

E ng i ne O v er sp e ed

E363

High FuelTemper ature

E368

High Intake Manifold Air Temperature

Wire Gauge

Wire Color  Circuit Number  Identification

Part Number For ConnectorAssembly

325PK-14 Receptacle Fuse

Pin or Socket Number 

Ground Connection

200BK-14

Component PartNumber 

Condi tion High Altitude Derate

E096

Socket

2

TimingCalibration (TC) Probe Connector  P400

Event Codes For ADEMIIIECM E009

1 Plug

105-9344

EngineCoolant Temperature Sensor  P100

Event Code

J274 3E5179

P274 1117898 325PK-14

C

Secondary Engine Speed/Timing Sensor  (Camshaft) P402

J174 1306795

 Atmospheric Pressure Sensor  J203

ECM Connector  J1

C18 Generator Set with EMCPII, EMCPII+ and EMCP3 Electrical System C6C1-UP G4C1-UP STM1-UP STH1-UP (Engine)

STD1-UP PDH1-UP (Engine)

Engine Oil Pressure Sensor  J201

LEFT SIDE VIEW

Related Electrical Service Manuals Title

Form Number 

Troubleshooting

SENR9706

SystemsOperation/TestingandAdjusting

SENR9708

Volume 1- Engin e and EMCPII Codes © 2006Caterpillar   All Rights Reserved

EMCPII Diagnostic Codes

Electronic Control Module (Engine) CI D CID 0 00 1

Co m p o n en t

E n gi n e Oi l P re s su r e Se ns or  

110

EngineCoolantTemperatureSensor  o r 

0 00 2

I nj ec ot r# r# 2

1 11

E n gi n e Co ol a nt L e ve l S en so r  

0 00 3

I nj ec ot r# r# 3

1 68

E l ec t irc al S y st em V otl a ge

0 00 4

I nj ec ot r# r# 4

1 90

E n gi n e Sp ee d S en so r  

0 00 5

I nj ec ot r# r# 5

2 48

C AT D at aL n i k

0 00 6

I nj ec ot r# r# 6

0 04 1

8 Vo Vo tl DC DC Su Su pp yl

268

EMCPElectronicControl(GeneratorSet)

0 09 1

T hr ot lt e Po si ti on

2 69

S e ns or P o we r S up pl y

3 33

A n nu nc i at o r Sw i ct h

3 34

S pa e r O ut pu t

0 09 4

F ue l Pr es su e r E ng n i e Oi l Pr es su e r

0 11 0

E n gi n e Co ol a nt T e mp er aut r e

0 16 8

S ys e t m Vo tl ag e

0 1 72

I na t ke M a ni f ol d Ari T em p

0 17 4

F ue l Te mp er at ur e

0 1 75

E n gi n e Oi l T em p er at u er

0 19 0

E ng ni eS pe ed

0 2 47

D aat L i nk C o mm u ni c at i on s

0 2 53

P e sr on ailt y Mo du l e

0 26 1

E ng n i eT m i n i g

0 2 62

5 V otl S e ns o r DC P o we r S up pl y

0268

CheckProgr k Programma a mmableParameters

0 2 73

T u br o O ut l et P r e ss u er

0 2 74

A t mo s ph er i c Pr e s u er

0 3 42

L os s o f Se c on da ry E n gi n e Sp ee d

0 5 35

E x ha us t T em p er at u er

0 54 5

Eh t er S at rt R el ay

¹TheCID isadiagnosticcodethatindicateswhichcomponentis faulty.

Failure Mode Identifiers (FMI)¹

3 36

E n gi n e Co nt r ol S w ti c h

4 41

E l ec t or ni c G ov er no r R el a y

4 42

G en er aot r F au l t Re l ay

4 43

C r an k Te rm i na t e Re l ay

4 44

S t ar t er M o o t r R el a y

445

Run Rel ay

4 46

A ri S hu d t ow n Re al y

2

F ue l Co nt ro l Re a l y EMCPElectronicControl(GeneratorSet)

5 66

I n va ldi E n gi n e Sh ut d ow n

5 90

E n gi n e Co nt r ol M o du l e

C

B

 A

C

5

6

7

2

EngineCoolantTemperatureSensor  o r 

1 11

E n gi n e Co ol a nt L e ve l S en so r  

1 68

E l ec t irc al S y st em V otl a ge

175

EngineOilTemperatureSensor 

1 90

E n gi n e Sp ee d S en so r  

2 48

C AT D at aL n i k

268

EMCPElectronicControl(GeneratorSet)

2 69

S e ns or P o we r S up pl y

Datavalidbutabovenormaloperationalrange.

3 33

A n nu nc i at o r Sw i ct h

Datavalidbutbelownormaloperationalrange. Dataerratic,intermittent t ent,orincorrect r ect.

3 34

S pa e r O ut pu t

3 36

E n gi n e Co nt r ol S w ti c h

3

Voltageabovenormalorshortedhigh.

4 41

E l ec t or ni c G ov er no r R el a y

4 5

Voltagebelownormalorshortedlow. Currentbelownormaloropencircuit.

4 42

G en er aot r F au l t Re l ay

4 43

C r an k Te rm i na t e Re l ay

1

23

14

31

24

39

32

47

40

57

48

70

58

160-7690

1

Co m p o n en t

110

13

155-2264

1

3

 A

8

EMCPII+ Diagnostic Codes E n gi n e Oi l P re s su r e Se ns or  

160-7689

3E-3370

B

4

1 00

1

C

3E-3388

4 47 500

CI D

B

C

1 2

Fai u l r e De Des c r i p t i on

A B

 A

169-8670

0

FMI No No .

155-2269

174-0502

Co m p o n en t

1 00

I nj ec ot r# r# 1

0 10 0

155-2267

Printed in U.S.A.

3E-8969(earlyengines)

7

8

9

6

5

4

8

2

7

3

6

4

5

13

1

23

14

31

24

39

32

47

40

57

48

70

58

10 11 12

128-2312 3

2

1

D E F

262-6073

7

8

9

10

11

C B

A G

J H

12

103-0213

   1    L    O    V    1   e    0  -  g   a    P    4    6    3    1    9    7    R    N

JAKE BRAKE MED/HI

A701

JAKE BRAKE MED/HI ECM GROUND STRAP

INJECTOR HARNESS CONNECTOR

ECM MOUNT ING BOLT

ELECTRONIC CONTROL MODULE (ECM)

P300

P2 1607690

1 ANA LOGSNSR POW ER( +5V) 2 ANALOGS NSR COMMON 3 4 5 6 7 8 JAKE BRAKE COMMON 9 JAKE BRAKE MED/HI 10 JAKE BRAKE LOW/HI 11 12 13 ATM OSPHERIC PRESS. SNSR 14 15 FUEL PRESS. SNSR 16 17 PASSIVE SNSR RETUR N 18 19 20 21 TIMINGCALIBRATIONPROBE + 22 TIMINGCALIBRATIONPROBE - 23 ENGOIL PRESS. SNSR 24 25 26 27 28 29 30 31 ENGINE COOLANTTEM P. SNSR 32 FUEL TEMP. SNSR 33 34 INTAKE M ANIF. AIR TEM P. SNSR 35 INJECTOR1 36 INJECTOR2 37 INJECTOR3 38 INJECTOR4 39 TURBOOUTL ETPRESS. SNSR 40 41 42 43 INJECTORCOMMON1 &2 44 INJECTORCOMMON3 &4 45 INJECTORCOMMON5 &6 46 47 PR I MA R YSP/T M GSI G+ 48 PR I MA R YSP/T M GSI G- 49 50 51 52 53 INJECTOR5 54 INJECTOR6 55 56 57 58 SECONDA RYSP/TMGSI G+ SECONDA RYSP/TMGSI G- 59 60 61 62 63 64 65 66 67 68 69 70

997/OR 993/BR

J702/BK J700/BR J701/GN A747/GY 413/BR R993/BR

G811/YL G810/PU 994/GY

1552252 A701/GY A702/PU A703/BR A704/GN A705/BU A706/GY J702/BK L985/YL J701/GN L984/OR J700/BR L983/WH

JAKE BRAKE LO/HI

J30 0 2626073 3E8969 EARLY 1 2 3 4 5 6 7 8 9 10 11 12

A702 A703 A704 A705

NO.5

A701 GY-16 A702 PU-16 A703 BR-16 A704 GN-16 A705 BU-16 A706 GY-16

P300 INJECTOR HARN ESS CONNECTOR

INJECTOR HARNESS CONNECTOR J300

GY-16

PU-16

BR-16

GN-16

BU-16

CYLINDER INJECTOR

NO.6 CYLINDER

NO.4

NO.3

CYLINDER INJECTOR

CYLINDER INJECTOR

NO.2

NO.1

CYLINDER INJECTOR

CYLINDER INJECTOR

FUEL TEMPERATURE P105

ENGINE COOLANT TEMPERATURE P100

FUEL PRESSURE J209

INJECTOR

D788

BK-16

D791 D787

YL-16 GN-16

D790

A706 GY-16 D791 YL-16 D791

OR-16

D789 WH-16

YL-16 D790

D790 OR-16 D786 BR-16 D789 WH-16

ENGINE OIL PRESSURE J201

OR-16 D789 WH-16

P400 1552269 G811/YL G810/PU

1 2

3E3364 TIMINGCALIBRATION (TC) PROBE

P920/BR F732/PK 998/BR 999/WH 995/LTBU R993/BR 997/OR 993/BR A746/PK A747/GY 994/GY F421/YL 413/BR C967/LTBU

P401 1552269 P920/BR F732/PK

1 2

SIGNAL(-) SIGNAL(+)

998/BR 999/WH

1 2

BK-18 WH-18

C967/LTBU A701/GY A702/PU A703/BR A704/GN A746/PK

+5V RETURN SIGNAL

TURBOOUTLET PRESSURE SENSOR (INTAKEMANIFOLDAIR) 194-6724

J20 3 3E3370 A B C

OR-18 YL-18 GN-18

+5V RETURN SIGNAL

ATMOSPHERIC SENSOR 194-6722

OR-18 YL-18 GN-18

L983/WH L984/OR L985/YL

J20 9 3E3370 A B C

C967/LTBU R993/BR

999/WH 998/BR

1 2

SIGNAL COMMON

FUEL TEMPERATURE SENSOR 130-9811

OR-18 YL-18 GN-18

+5V RETURN SIGNAL

FUEL PRESSURE SENSOR 194-6725

P103 1552269 1 2

SIGNAL COMMON

INTAKEMAN IFOLD AIR TEMPERATURE SENSOR 130-9811

JUNCTION BOX

1

1

TURBOOUTLETPRESSURE (I NTA KE MANIFOLDAI R) J200

D789

TIMING CALIBRATION(TC) PROBE CONNECTOR P400

SPLICE 997

SPLICE R993

SPLICE D789

13 23 31 39 47 57 70

PRIMARYENGINE SPEED/ TIMING (CRANKSHAFT) P401

CONNECTOR AND SPLI CE LOCATIONS FOR HARNESS 122- 1486

1 14 24 32 40 48 58

ELECTRONIC CONTROL MODULE P2

CONNECTOR AND SPLI CE LOCATIONS FOR HARNESS 238- 1773

ENGINE OIL TEMPERATURE

JUNCTION BOX

(+) WH-12 60A CB2 6T-3645

START RELAY (SMMS) 9X-8124

30

A702

D789

SPLICE D788

(+) WH-14

20A CB1 200-8577

87a

D791

SECONDARYENGINE SPEED/ TIMING (CAMSHAFT) P402

1   

   2

D790

D790

(+) WH-16

15A CB3 9M-9085

ECM RELAY 206-9427

A703

A704

A701

SPLICE D790

3    

  4

A705

SPLICE D791

ENGINE OIL PRESSURE SENSOR 194-6725

F421/YL R993/BR

997/OR 993/BR 413/BR

INTAKE MAN IF OLD AIR TEMPERATURE P103

INJECTOR #1

INJECTOR #2

PRESSURE

+5V RETURN SIGNAL

P105 1552269

A705/BU A706/GY

ATM OSPHERI C PRESSURE J203

D786

SPLICE 993

J20 1 3E3370 997/OR A 993/BR B 994/GY C

F732/PK P920/BR

A706

INJECTOR #3

INJ ECTOR #4

5    

   6

D791

OR-18 YL-18 GN-18

997/OR 993/BR A747/GY

INJ ECTOR #5

INJECTOR #6

ENGINE COOLANT TEMPERATURE SENSOR 130-9811

SIGNAL COMMON

J20 0 3E3370 997/OR A 993/BR B A746/PK C

995/LTBU F421/YL

D788 SPLICE D786

(CAMSHA FTPOSI TION) SECONDA RYENGINE S PEED/TIMINGSENSOR 188-7513

SIGNAL(-) SIGNAL(+)

P100 1552269 1 2

D787

(CRANK SHAFTPOSITION) PRIMARYENGINE SPEED/TIMINGSENSOR 189-9266

P402 1552269

995/LTBU R993/BR

D788

D786

D788

EARTH

25

+

+

40

4

2

COOLANT LEVEL

2 10

(25) WH-14

87 85

86    6    1      H    W

   6    1   6   -    1    H   H      W    W    )    0   2    )    1    (    (

   )   +    B    (

   1    L    O    V    2    1   l  r   o   o    0  -   C  ,    4  e   g    3   P   a    9   6    7   1    R    N

   2    1      H    W

   6   6    1   1   -    H      H    W    W    )    2    )    4    (    (

(2) WH-16

3

   )    0    4    (

   6    1      H    W    )    N    G    Y    ( G

STARTING MOTOR

S

(2) WH-16 MTR

BAT.

R448 ANALOG VOLTAGE REGULATOR

RD-00 STARTING MOTOR

ALTERNATOR

P1 1607689 (2) WH-12 (2) W H - 16

3 4

CAT DAT A LI N K (+) CAT DAT A LI N K (-)

5 6 7 8 9 10 11 12

(20) WH-16 (45) WH-16

(20) WH-16

19 20

(ATA-) (ATA+)

21

(45) WH-16 (41) WH-16

26 27

(SSPD) WH-12

(1) WH-16 (2) WH-16

(D+) WH-12 (D-) WH-16

(D+) WH-12 (D-) WH-16

(ATA-) (ATA+) SHIELD

(ATA-) (ATA+) SHIELD

(20) WH-16 (45) WH-16 (41) WH-16

(20) WH-16 (45) WH-16 (41) WH-16

(SSPD) WH-12 SHIELD

(SSPD) WH-12 SHIELD

(10) WH-16

(10) WH-16

SHIELD

28 29 30

(2) WH-16 (2) W H -1 6 (2) WH-16

31

J19 3 9 DATA(- )

   6    1      6    H    1    W   -    )    H    1    W    (    )    2    (

BK-00

BATTERY 12V

42 43 44

11

12

17

30

2

46

4

34

45

+BATTERY(SWITCHED) J19 3 9 DATA(+ )

49 50

(B+) WH-16 (ATA+)

+

+

1

Y/G

2

2

2

2

EF2

EMERGENCYS TOP SWITCH

ENGINE SPEED

6 7 8 9

1

(20) WH-16 (2) WH-16 (2) WH-16

SPLICE(2) #3

10 11 12 13

4

(34) (46) (12) (11) (17) (30)

(2) W H-6 1

WH-16 WH-16 WH-16 WH-16 WH-16 WH-16

(41) WH-16

15 16

(45) WH-16

17 18

2

(62L) (18) (67L) (620) (19) (670)

WH-16 WH-16 WH-16 WH-16 WH-16 WH-16

ALTERNATOR

19 20

40

21 22 23

SPLICE(10) SPLICE(2) #2

24 25 26 27 28

(41) WH-16

41

46 47 48

EF1

+

5

(10) WH-16

(2) WH-16

(ATA-)

36 37 38 39 40

82

25

9 X 43 9 1 1 0 3- 0 2 1 3 1 (1) WH-16 2 (1) WH-16 3 (D+) WH-12 4 (D-) WH-16

(1) WH-16

35

START/RUN/STOP

80

CORE BALANCE CURRENT TRANSFORMER

14

SHIELD

24 25

32 33 34

(10) WH-16 (10) W H - 16

(D+) WH-12 (D-) WH-16

17

ENGINE STOP

(2) W H - 16 (2) WH-16

(2) WH-16

(10) W H - 16

15 16

22 23

2

(4) WH-16 (B+) WH-16 (B+) WH-16 (B+) WH-16 (B+) WH-16

(D+) WH-12 (D-) WH-16

13 14

DIGI TAL RETUR N 18

BATTERY 12V

BK-00

1 2

B+

+

   4    1   2   4   6   -    1   1   1    H   H   -   H   -    H      W    W    W    W    )    5   )    2   +    )   +    )   +    (    (   (    (

3 E - 3 38 8 1552264 1 WH-16 (17) WH-16 2 WH-16 (30) WH-16 3 WH-16 (12) WH-16 4 WH-16 (11) WH-16 5 WH-16 (46) WH-16 6 WH-16 (2) WH-16 7 WH-16 (34) WH-16 8 WH-16 (4) WH-16

SPLICE(B+) SPLICE(2) #4

29 30

(4) WH-16 (2) WH-16 (34) WH-16 (46) WH-16 (12) WH-16 (11) WH-16 (17) WH-16 (30) WH-16

(21) (22) SHIELD

SPLICE(1) SPLICE(2) #1

31 32 33

(+)BATTERY

34

(SSPD) WH-12 SHIELD

35 36 37 38

(ATA+) (ATA-) SHIELD

39 40 41 42 43

REFERENCE GENERATORS ETC ONTROL SCHEMATIC VOL2 ANDVOL3 1

THRU 70

(+)BATTERYSWITCHED STARTINGCIRCUIT (-) BATTERY/ SENSORRETURN SENSOR/ ACTUATORSUPPLY SIGNALPLUSTO ECM