C-7 YPG-C7T

RENR7872-01 January 2006

Connector and Splice Locations for Harness 222-5905 and 222-5907 Diagnostic Code Listing

E-S5 (L984 OR-18) Intake Manifold Air Temperature E-C7

E-S6 (L985 YL-18)

Injector Harness Connector E-C11

E-S4 (L983 WH-18)

Boost Pressure E-C3

Engine Coolant Temperature E-C6 E-S2 (G829 GN-18)

Injection Actuation Pressure E-C9 Inlet Air Heater Relay E-C8

E-S1 (G828 WH-18)

E-S7 (G850 BU-18)

E-S3 (G833 PK-18)

Engine Oil Pressure E-C5

Secondary Engine Speed/Timing (Bottom) E-C13

Injection Actuation Pressure Control Valve E-C15

Flash PID-FMI Code

Atmospheric Pressure E-C2

Engine Control Module (P2) E-C1

Inlet Air Heater Lamp E-C4

Turbo Wastegate Solenoid E-C14

Primary Engine Speed/Timing (Top) E-C12

Connector Tables for Harness 222-5905 and 222-5907 CLR-GA WH-18 GN-18

BU-18

GY-18

PK-18

GY-18 BR-18

BU-18

BU-18 GY-18 PU-18 BR-18 GN-18 PK-18 BR-18 BU-18 WH-18 OR-18 YL-18 WH-18 BK-18

E-C1 WIRE NAME POS 1 G828-E1 2 G829-E5 3 4 5 6 7 G850-E9 8 9 10 11 12 13 A747-E10 14 15 16 17 G833-E11 18 19 20 21 22 23 994-E16 24 G849-E17 25 26 27 28 29 30 31 995-E18 32 33 34 C967-E20 35 A701-E21 36 A702-E22 37 A703-E23 38 A704-E24 39 A746-E25 40 G826-E26 41 G827-E27 42 43 L983-E27 44 L984-E32 45 L985-E33 46 47 E964-E38 48 E963-E39 49 50 51 52 53

TERM/PLUG 8T-8737 180-9340 180-9340 8T-8737 8T-8737 8T-8737 8T-8737 180-9340 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 180-9340 8T-8737 8T-8737 8T-8737 180-9340 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 180-9340 180-9340 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 180-9340 8T-8737 8T-8737 180-9340 180-9340 180-9340 180-9340 180-9340 180-9340 180-9340 180-9340 8T-8737 180-9340 180-9340 180-9340 8T-8737 180-9340 180-9340 8T-8737 8T-8737 8T-8737 8T-8737

BU-18 GY-18

YL-18 BU-18 PK-18 PU-18 WH-18 BK-18

QTY 1 2 1

CLR-GA WH-18 GN-18 GY-18 QTY 1 1

CLR-GA WH-18 GN-18 PK-18 QTY 1 1

CLR-GA RD-18 BU-18 QTY 1 2 1 1

E-C1 (continued) A705-E40 54 A706-E41 55 56 57 E966-E36 58 E965-E37 59 60 G854-E45 61 G855-E46 62 M795-E99 63 C211-E98 64 65 66 67 68 69 70 ACCESSORY TABLE PART NAME PLUG AS. STRAP ENDBELL

E-C2 WIRE NAME POS G828-E2 A G829-E8 B A747-E10 C ACCESSORY TABLE PART NAME PLUG AS. WEDGE

E-C3 WIRE NAME POS G828-E3 A G829-E7 B A746-E25 C ACCESSORY TABLE PART NAME PLUG AS. WEDGE

E-C4 WIRE NAME POS C987-E44 A G850-E42 B ACCESSORY TABLE PART NAME PLUG AS. SEAL RETAINER CAP

180-9340 180-9340 8T-8737 8T-8737 180-9340 180-9340 8T-8737 180-9340 180-9340 180-9340 180-9340 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 P/N 160-7690 3S-2093 126-1774

TERM/PLUG 180-9340 180-9340 180-9340 P/N 155-2267 155-2276

TERM/PLUG 180-9340 180-9340 180-9340 P/N 155-2267 155-2276

TERM/PLUG 116-6159 116-6159 P/N 116-6158 100-6674 111-2422 116-6161

CLR-GA BR-18 BU-18 GY-18 QTY 1 1

CLR-GA BU-18 PK-18 QTY 1 1

CLR-GA BU-18 PK-18 QTY 1 1

CLR-GA RD-18 BU-18 QTY 1 1

CLR-GA WH-18 GN-18 BR-18 QTY 1 1

E-C5 WIRE NAME POS G826-E26 A G827-E27 B 994-E16 C ACCESSORY TABLE PART NAME PLUG AS. WEDGE

E-C6 WIRE NAME POS 995-E18 1 G833-E12 2 ACCESSORY TABLE PART NAME PLUG AS. WEDGE

E-C7 WIRE NAME POS C967-E20 1 G833-E13 2 ACCESSORY TABLE PART NAME PLUG AS. WEDGE


E-C9 WIRE NAME POS G828-E4 A G829-E6 B G849-E17 C ACCESSORY TABLE PART NAME RECEPTACLE AS. WEDGE

TERM/PLUG 180-9340 180-9340 180-9340 P/N 155-2267 155-2276

TERM/PLUG 180-9340 180-9340 P/N 155-2269 155-2261

TERM/PLUG 180-9340 180-9340 P/N 155-2269 155-2261

TERM/PLUG 180-9340 180-9340 P/N 155-2269 155-2261

TERM/PLUG 180-9339 180-9339 180-9339 P/N 3E-3370 3E-3371

CLR-GA GY-18 PU-18 BR-18 GN-18 BU-18 GY-18 YL-18 YL-18 OR-18 OR-18 WH-18 WH-18 QTY 1 1

CLR-GA BK-18 WH-18 QTY 1

CLR-GA BU-18 YL-18 QTY 1

CLR-GA WH-18 BK-18 QTY 1 1

CLR-GA PK-18 PU-18 QTY 1 1

E-C11 WIRE NAME POS A701-E21 1 A702-E22 2 A703-E23 3 A704-E24 4 A705-E40 5 A706-E41 6 L985-E35 7 L985-E34 8 L984-E30 9 L984-E31 10 L983-E29 11 L983-E28 12 ACCESSORY TABLE PART NAME RECEPTACLE AS. WEDGE

E-C12 WIRE NAME POS E963-E39 A E964-E38 B ACCESSORY TABLE PART NAME RECEPTACLE AS.

E-C13 WIRE NAME POS E965-E37 A E966-E36 B ACCESSORY TABLE PART NAME RECEPTACLE AS.

E-C14 WIRE NAME POS M795-E99 1 C211-E98 2 ACCESSORY TABLE PART NAME PLUG AS. WEDGE

E-C15 WIRE NAME POS G854-E45 1 G855-E46 2 ACCESSORY TABLE PART NAME PLUG AS. WEDGE

TERM/PLUG 180-9339 180-9339 180-9339 180-9339 180-9339 180-9339 180-9339 180-9339 180-9339 180-9339 180-9339 180-9339

Description

N/A

55

No Diagnostic Code Detected

102-04

25

Boost Pressure voltage low

72

Cylinder #1 Injector current fault

102-07

25

Boost Pressure not responding

002-11

72


105-00

64

High Intake Manifold Air Temperature Warning

003-11

73


105-03

38

Intake Manifold Air Temperature voltage high

004-11

73


105-04

38

Intake Manifold Air Temperature voltage low

005-11

74


006-11

74


108-03

26

Barometric Pressure voltage high

022-11

42

Primary to Secondary Engine Speed Signal Calibration

108-04

26

Barometric Pressure voltage low

022-13

42

Engine Speed Signal Calibration Not Performed

110-00

61

High Coolant Temperature Warning

030-08

29

PTO Throttle signal invalid

110-03

27

Coolant Temperature voltage high

030-13

29

PTO Throttle out of calibration

110-04

27

Coolant Temperature voltage low

032-05

33

Turbo Wastegate Solenoid current low

110-11

61

Very High Coolant Temperature

032-06

33

Turbo Wastegate Solenoid current high

111-01

62

Low Coolant Level Warning

032-11

33

111-02

12

Coolant Level signal invalid

Second Fuel Level voltage high

111-03

12

Coolant Level voltage high

038-04

Second Fuel Level voltage low

111-04

12

Coolant Level voltage low Very Low Coolant Level

21

8 Volt Supply voltage high

111-11

62

041-04

21

8 Volt Supply voltage low

111-14

62

Low Coolant Level Warning

042-11

18

Injection Actuation Pressure output fault

128-03

44

Secondary Fuel Level voltage high

043-02

71

Key Switch Fault

128-04

44

Secondary Fuel Level voltage low

064-02

34

Secondary Engine Speed loss of signal

164-00

17

Excessive Injection Actuation Pressure

064-11

34

Secondary Engine Speed no pattern

164-02

15

Injection Actuation Pressure Signal Erratic

070-05

49

Inlet Air Heater current low

164-03

15

Injection Actuation Pressure Voltage High

070-06

49

Inlet Air Heater current high

164-04

15

Injection Actuation Pressure Voltage Low

071-00

01

Idle Shutdown Override

164-11

39

Injection Actuation Pressure system fault

071-01

47

Idle Shutdown

168-00

51

Excessive ECM Battery Power

071-11

00

Engine Shutdown Override Switch Occurrence

168-01

51

Low ECM Battery Power

071-14

47

PTO Shutdown

168-02

51

ECM Battery Power Intermittent

084-00

41

Vehicle Overspeed Warning

173-00

16

High Exhaust Gas Temperature Derate

084-01

31

Vehicle Speed loss of signal

173-11

16

Very High Exhaust Gas Temperature Derate

084-02

36

Vehicle Speed signal invalid

186-04

00

PTO Engine Shutdown Switch Voltage Low

084-08

36

Vehicle Speed signal out of range

186-14

47

PTO Engine Shutdown Switch Occurrence

084-10

36

Vehicle Speed signal rate of change

190-00

35

Engine Overspeed Warning

084-14

00

Quick Stop Occurrence

190-02

34

Primary Engine Speed loss of signal

091-08

32

Throttle Position Invalid

190-11

34

Primary Engine Speed no pattern

091-13

28

Throttle Position out of Calibration

224-11

00

Theft Deterrent Active

094-01

37

Fuel Pressure Low - engine cranking

224-14

00

Theft Deterrent Active with Engine Cranking

094-03

37

Fuel Pressure Voltage high

231-02

58

J1939 Data Incorrect

094-04

37

Fuel Pressure Voltage low

231-11

58

J1939 Data Link Fault

Fuel Pressure Low - engine running

231-12

00

J1939 Device not responding Transmission Data Link Derate

096-03

00

Fuel Level Voltage High

231-14

57

096-04

00

Fuel Level Voltage Low

232-03

21

5 Volt Supply voltage high

100-01

46

Low Oil Pressure Warning

232-04

21

5 Volt Supply voltage low

100-03

24

Oil Pressure voltage high

246-11

00

Brake Pedal Switch #1 Fault

100-04

24

Oil Pressure voltage low

247-11

00

Brake Pedal Switch #2 Fault

100-11

46

Very Low Oil Pressure

252-11

59

Engine Software Incorrect

102-01

25

Low Boost Pressure

253-02

56

Check Customer or System Parameters

102-02

25

Boost Pressure signal erratic

253-14

56

Truck Manufacturer Not Programmed

102-03

25

Boost Pressure voltage high

N/A

55

No Diagnostic Code Detected

P/N 100-3320

P174 1306795

P274 1117898

Pin

Single Wire Connector

TERM/PLUG 180-9340 180-9340

Wire Color

Plug Wire Gauge

Secondary Engine Speed/Timing (Bottom) E-C13

C7 On-highway Engine Electrical System YPG1-UP C7T1-UP

Fuse

200-L32 BK-14

Component Part Number

TERM/PLUG 180-9340 180-9340

Related Electrical Service Manuals

P/N 155-2269 155-2261

Title

© 2006 Caterpillar All Rights Reserved

Form Number

Troubleshooting

SENR9517

Systems Operation / Testing and Adjusting

RENR7572

E-S7 (G850 BU-18)

E-S9 (G827 BU-18)

Primary Engine Speed/Timing (Top) E-C12

Engine Control Module (P2) E-C1


Atmospheric Pressure E-C2

Inlet Air Heater Lamp E-C4

Injection Actuation Pressure E-C9

Fuel Pressure E-C16

Connector Tables for Harness 266-7696 and 266-7698

Part Number For J274 Connector Assembly 3E5179 325-A135 PK-14 1 Receptacle 2

P/N 155-2269 155-2261

E-S1 (G828 WH-18)

Engine Oil Pressure E-C5

E-C1 CLR-GA

WIRE NAME

WH-18 GN-18

G828-E1 G829-E5

BU-18

G850-E9

GY-18

A747-E10

PK-18 PK-18

C991-E49 G833-E11

GY-18 BR-18

105-9344

Inlet Air Heater Relay E-C8

E-S8 (G826 -18)

Pin or Socket Number

Ground Circuit Connection Number Identification

Boost Pressure E-C3

E-S2 (G829 GN-18)

994-E16 G849-E17

Connector Reference Designator

325-AG135 PK-14 Socket

Engine Coolant Temperature E-C6

Harness And Wire Symbols

J174 1306795

E-S4 (L983 WH-18)

E-S3 (G833 PK-18)

041-03

Injection Actuation Pressure Control Valve E-C15

E-S6 (L985 YL-18) Injector Harness Connector E-C11

Very High Intake Manifold Air Temperature

Turbo Wastegate Solenoid current mismatch

Harness identification code This example indicates wire 135 in harness "AG".

P/N 111-2416

64

038-03

TERM/PLUG 111-1567 111-1567

TERM/PLUG 111-1567 111-1567

105-11

Intake Manifold Air Temperature E-C7

E-S5 (L984 OR-18)

Description

001-11

094-11

P/N 3E-5179 3E-5180

Flash PID-FMI Code

Connector and Splice Locations for Harness 266-7696 and 266-7698

BU-18

995-E18

BU-18 GY-18 PU-18 BR-18 GN-18 PK-18 BR-18 BU-18

C967-E20 A701-E21 A702-E22 A703-E23 A704-E24 A746-E25 G826-E26 G827-E47

WH-18 OR-18 YL-18

L983-E27 L984-E32 L985-E33

WH-18 BK-18

E964-E38 E963-E39

E-C1(continued) POS 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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53

TERM/PLUG 8T-8737 180-9340 180-9340 8T-8737 8T-8737 8T-8737 8T-8737 180-9340 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 180-9340 8T-8737 8T-8737 180-9340 180-9340 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 180-9340 180-9340 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 180-9340 8T-8737 8T-8737 180-9340 180-9340 180-9340 180-9340 180-9340 180-9340 180-9340 180-9340 8T-8737 180-9340 180-9340 180-9340 8T-8737 180-9340 180-9340 8T-8737 8T-8737 8T-8737 8T-8737

BU-18 GY-18

YL-18 BU-18 PK-18 PU-18 WH-18 BK-18

QTY 1 2 1

CLR-GA WH-18 GN-18 GY-18 QTY 1

CLR-GA WH-18 GN-18 PK-18 QTY 1

CLR-GA RD-18 BU-18 QTY 1 2 1 1

CLR-GA BR-18 BU-18 GY-18

Printed in U.S.A.

QTY 1

RENR7872-01 8 Page

A705-E40 A706-E41

54 55 56 57 E966-E36 58 E965-E37 59 60 G854-E45 61 G855-E46 62 M795-E99 63 C211-E98 64 65 66 67 68 69 70 ACCESSORY TABLE PART NAME PLUG AS. STRAP ENDBELL

E-C2 WIRE NAME POS G828-E2 1 G829-E8 2 A747-E10 3 ACCESSORY TABLE PART NAME PLUG AS.

E-C3 WIRE NAME POS G828-E3 1 G829-E7 2 A746-E25 3 ACCESSORY TABLE PART NAME PLUG AS.

E-C4 WIRE NAME POS C987-E44 A G850-E42 B ACCESSORY TABLE PART NAME PLUG AS. SEAL RETAINER CAP

E-C5 WIRE NAME POS G826-E14 1 G827-E49 2 994-E16 3 ACCESSORY TABLE PART NAME PLUG AS.

180-9340 180-9340 8T-8737 8T-8737 180-9340 180-9340 8T-8737 180-9340 180-9340 180-9340 180-9340 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 8T-8737 P/N 160-7690 3S-2093 126-1774

TERM/PLUG 180-9340 180-9340 180-9340 P/N 230-4013

CLR-GA BU-18 PK-18 QTY 1

CLR-GA BU-18 PK-18 QTY 1

CLR-GA RD-18 BU-18 QTY 1 1

CLR-GA WH-18 GN-18 BR-18 QTY 1

TERM/PLUG 180-9340 180-9340 180-9340 P/N 230-4013

TERM/PLUG 116-6159 116-6159 P/N 116-6158 100-6674 111-2422 116-6161

TERM/PLUG 180-9340 180-9340 180-9340 P/N 237-0227

CLR-GA GY-18 PU-18 BR-18 GN-18 BU-18 GY-18 YL-18 YL-18 OR-18 OR-18 WH-18 WH-18 QTY 1 1

E-C6 WIRE NAME POS 995-E18 1 G833-E12 2 ACCESSORY TABLE PART NAME PLUG AS.

E-C7 WIRE NAME POS C967-E20 1 G833-E13 2 ACCESSORY TABLE PART NAME PLUG AS.


E-C9 WIRE NAME POS G828-E4 1 G829-E6 2 G849-E17 3 ACCESSORY TABLE PART NAME PLUG AS.

TERM/PLUG 180-9340 180-9340

CLR-GA BK-18 WH-18

P/N 230-4011

QTY 1

TERM/PLUG 180-9340 180-9340

CLR-GA BU-18 YL-18

P/N 230-4011

QTY 1

TERM/PLUG 180-9340 180-9340

CLR-GA WH-18 BK-18

P/N 155-2269 155-2261

QTY 1 1

TERM/PLUG 180-9340 180-9340 180-9340

CLR-GA PK-18 PU-18

P/N 237-0227

E-C11 WIRE NAME POS TERM/PLUG A701-E21 1 180-9339 A702-E22 2 180-9339 A703-E23 3 180-9339 A704-E24 4 180-9339 A705-E40 5 180-9339 A706-E41 6 180-9339 L985-E35 7 180-9339 L985-E34 8 180-9339 L984-E30 9 180-9339 L984-E31 10 180-9339 L983-E29 11 180-9339 L983-E28 12 180-9339 ACCESSORY TABLE PART NAME P/N RECEPTACLE AS. 3E-5179 WEDGE 3E-5180

QTY 1 1

CLR-GA BR-18 BU-18 PK-18 QTY 1

E-C12 WIRE NAME POS TERM/PLUG E963-E39 A 111-1567 E964-E38 B 111-1567 ACCESSORY TABLE PART NAME P/N RECEPTACLE AS. 100-3320

E-C13 WIRE NAME POS TERM/PLUG E965-E37 A 111-1567 E966-E36 B 111-1567 ACCESSORY TABLE PART NAME P/N RECEPTACLE AS. 111-2416

E-C14 WIRE NAME POS M795-E99 1 C211-E98 2 ACCESSORY TABLE PART NAME PLUG AS. WEDGE

E-C15 WIRE NAME POS G854-E45 1 G855-E46 2 ACCESSORY TABLE PART NAME PLUG AS. WEDGE

E-C16 WIRE NAME POS G826-E19 1 G827-E50 2 C991-E49 3 ACCESSORY TABLE PART NAME PLUG AS.

TERM/PLUG 180-9340 180-9340 P/N 155-2269 155-2261

TERM/PLUG 180-9340 180-9340 P/N 155-2269 155-2261

TERM/PLUG 180-9340 180-9340 180-9340 P/N 237-0227

ENGINE HARNESS WIRING DIAGRAM

INJECTOR HARNESS GROMMET A701-A1 A702-A3 A703-A5 A704-A7 A705-A9 A706-A11 L985-A12 L985-A10 L984-A8 L984-A6 L983-A4 L983-A2

A701-A1 GY-16 A702-A3 PU-16 A703-A5 BR-16 A704-A7 GN-16 A705-A9 BU-16

B A

NOTE X

A-C7 1539693

B A

CYLINDER INJECTOR #6

NOTE X

A-C6 1539693

B A


NOTE X

A-C5 1539693

B A


NOTE X

A-C4 1539693

B A


NOTE X

A-C3 1539693

B A

NOTE X

A-C2 1539693

CYLINDER CYLINDER INJECTOR #1 INJECTOR #2

INJECTOR HARNESS CONNECTOR A-C1 E-C11 3E5179 1552252 A701-E21 1 GY-16 A702-E22 2 PU-16 A703-E23 3 BR-16 A704-E24 4 GN-16 A705-E40 5 BU-16 6 A706-E41 GY-16 YL-16 L985-E35 7 8 YL-16 L985-E34 9 OR-16 L984-E30 10 OR-16 L984-E31 11 L983-E29 WH-16 12 L983-E28 WH-16

L985-A10 YL-16

PRIMARY

L984-A8 OR-16 L984-A6 OR-16 L983-A4 WH-16 L983-A2 WH-16

A B

ENGINE SPEED/TIMING SENSORS 245-4630

A701-E21 A702-E22 A703-E23 A704-E24 A705-E40 A706-E41

GY-18 PU-18 BR-18 GN-18 BU-18 GY-18 YL-18 YL-18 OR-18 OR-18 WH-18 WH-18

G850-E9 BU-18

E-C12 1003320 E963-E39 BK-18 E964-E38 WH-18

E963-E39 E964-E38 E965-E37 E966-E36

INJECTION ACTUATION PRESSURE SENSOR 224-4536

HARNESS 222-5905 AND 222-5907

HARNESS 222-5905 AND 222-5907

+5V OR-18 GROUND YL-18 SIGNAL GN-18

ENGINE OIL PRESSURE SENSOR 161-1705

HARNESS 222-5905 AND 222-5907

HARNESS 222-5905 AND 222-5907

A B C

E-C5 1552267 G826-E26 BR-18 G827-E27 BU-18 994-E16 GY-18

1 2 3

E-C2 1552267 G828-E2 WH-18 G829-E8 GN-18 A747-E10 GY-18

A B C

E-C3 1552267 G828-E3 WH-18 G829-E7 GN-18 A746-E25 PK-18

SIGNAL GROUND

1 2

E-C7 1552269 C967-E20 BU-18 G833-E13 PK-18

SIGNAL GROUND

1 2

E-C6 1552269 995-E18 BU -18 G833-E12 PK-18

+5V GROUND SIGNAL

+5V GROUND SIGNAL

ATMOSPHERIC PRESSURE SENSOR 161-1703

+5V GROUND SIGNAL

BOOST PRESSURE SENSOR 161-1704

HARNESS 222-5905 AND 222-5907

INTAKE MANIFOLD AIR TEMPERATURE SENSOR 130-9811

HARNESS 222-5905 AND 222-5907

ENGINE COOLANT TEMPERATURE SENSOR 130-9811

E-C9 3E3370 G828-E4 WH-18 G829-E6 GN-18 G849-E17 BR-18

A B C

INJECTION ACTUATION PRESSURE SENSOR 248-2169

+5V GROUND SIGNAL

ENGINE OIL PRESSURE SENSOR 274-6719

+5V GROUND SIGNAL

ATMOSPHERIC PRESSURE SENSOR 274-6717

+5V GROUND SIGNAL

+5V GROUND SIGNAL

BOOST PRESSURE SENSOR 276-6793

A B C

E-C9 2370227 G828-E4 WH-18 G829-E6 GN-18 G849-E17 BR-18

A B C

E-C5 2370227 G826-E14 BR-18 G827-E27 BU-18 994-E16 GY-18

1 2 3

E-C2 2304013 G828-E2 WH-18 G829-E8 GN-18 A747-E10 GY-18

A B C

E-C3 2304013 G828-E3 WH-18 G829-E7 GN-18 A746-E25 PK-18

INTAKE MANIFOLD AIR TEMPERATURE SENSOR 256-6453

SIGNAL GROUND

1 2

ENGINE COOLANT TEMPERATURE SENSOR 256-6453

SIGNAL GROUND

1 2

E-C6 2304011 995-E18 BU -18 G833-E12 PK-18

BK-18 BK-18

1 2

FUEL PRESSURE SENSOR 274-6719 NOTE A

E-C8 1552269 C987-E44 RD-18 G850-E43 BU-18

+5V GROUND SIGNAL

C967-E20 BU -18 A701-E21 GY-18 A702-E22 PU-18 A703-E23 BR-18 A704-E24 GN-18 A746-E25 PK-18 G826-E26 BR-18 G827-E47 BU-18 L983-E27 WH-18 L984-E32 OR-18 L985-E33 YL-18

G826-E26 BR-18

E964-E38 WH-18 E963-E39 BK-18

HARNESS 222-5905 AND 222-5907

G829-E5 G829-E6 G829-E7 G829-E8

GN-18 GN-18 GN-18 GN-18

A705-E40 BU-18 A706-E41 GY-18

1

E966-E36 YL-18 E965-E37 BU-18

NOTE A G827-E47 BU-18 G827-E27 BU -18 G827-E50 BU -18

G854-E45 G855-E46 M795-E99 C211-E98

1

PK-18 PU-18 WH-18 BK-18

G827-E27 BU-18 HARNESS 222-5905 AND 222-5907

G833-E11 PK-18 G833-E13 PK-18 G833-E12 PK-18

M795-E99 WH-18 C211-E98 BK-18

PRESSURE SENSOR +5V PRESSURE SENSOR COMMON

INLET AIR HEATER RELAY

ATMOSPHERIC PRESSURE FUEL PRESSURE TEMPERATURE SENSOR COMMON

TIMING CALIBRATION(-) TIMING CALIBRATION(+) ENGINE OIL PRESSURE INJECTION ACT. PRESSURE

ENGINE COOLANT TEMPERATURE INTAKE MANIFOLD AIR TEMP INJECTOR CYL 1 INJECTOR CYL 2 INJECTOR CYL 3 INJECTOR CYL 4 BOOST PRESSURE ENGINE OIL PRESSURE (+5V) ENGINE OIL PRESSURE COMMON INJECTOR COMMON CYL 1&2 INJECTOR COMMON CYL 3&4 INJECTOR COMMON CYL 5&6 SPEED/TIMING TOP(+) SPEED/TIMING TOP(-)

INJECTOR CYL 5 INJECTOR CYL 6 SPEED/TIMING BOTTOM(+) SPEED/TIMING BOTTOM(-) IAP CONTROL VALVE(+) IAP CONTROL VALVE(-) TURBO WASTEGATE(+) TURBO WASTEGATE(-)

ECM GND STRAP

1

TO ECM

C967-E20 BU -18 G849-E17 BR-18 995-E18 BU -18 994-E16 GY -18

MOUNTING INJE BOLT INJECTOR CYL BOOST PRESSURE ENGINE OIL PRESSU ENGINE OIL PRESSUR

38 39 40 41 42 43 44 45 46

G827-E27 BU-18 HARNESS 222-5905 AND 222-5907

G850-E9 BU-18 M795-E99 WH-18 C211-E98 BK-18

G850-E9 BU-18

G850-E9 BU-18

WH-18 WH-18 WH-18 WH-18

NOTE A G826-E26 BR-18 G826-E14 BR -18 G826-E19 BR -18

E-C16 2370227 G826-E19 BR-18 (NOTE A) G827-E50 BU-18 (NOTE A) C991-E49 PK-18 (NOTE A)

A B C

994-E16 GY-18 G849-E17 BR-18

995-E18 BU -18 G828-E1 G828-E2 G828-E3 G828-E4

E-C14 1552269 1 2

C991-E49 PK-18 (NOTE A) G833-E11 PK-18

BK-18 WH-18 BU-18 YL-18

A746-E25 PK-18 A747-E10 GY-18

E-C7 2304011 C967-E20 BU-18 G833-E13 PK-18

TURBO WASTEGATE SOLENOID 230-9944

A747-E10 GY-18

G854-E45 PK-18 G855-E46 PU-18

G854-E45 PK-18 G855-E46 PU-18

1 2

1

L985-E35 YL-18 L985-E34 YL-18 L985-E33 YL-18

ENGINE CONTROL MODULE

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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70

G828-E1 WH-18 G829-E5 GN-18

L984-E30 OR-18 L984-E31 OR-18 L984-E32 OR-18

E-C15 1552269 INJECTION ACTUATION PRESSURE CONTROL VALVE

P2 1607690

L983-E29 WH-18 L983-E28 WH-18 L983-E27 WH-18

E-C13 1112416 E965-E37 BU-18 A E966-E36 YL-18 B

SECONDARY

GY-18 PU-18 BR-18 GN-18 BU-18 GY-18

INJECTOR COMMON INJECTOR COMM INJECTOR

C991-E49 PK-18 (NOTE A)

K995-OR

INLET AIR HEATER RELAY 209-5581

E-C4 1166158 INLET AIR HEATER

C987-E44 RD-18 G850-E42 BU-18

A B INLET AIR HEATER LAMP

INLET AIR HEATER GROUND STRAP

B A C987-RD

TYPICAL VEHICLE HARNESS WIRING DIAGRAM

CIRCUITS WITHIN THIS AREA ARE RECOMMENDATIONS

K995-OR

C987-RD

CHECK ENGINE LAMP

N/O RELAY

ENGINE CONTROL MODULE

L994-YL

P1 1607689 WARNING LAMP 659-PK

KEY SWITCH

FAST IDLE ENABLED LAMP OR WAIT TO START LAMP

OFF ON START

G880-PK

FLYBACK DIODE

EXHAUST BRAKE SOLENOID

L994-YL 659-PK K998-BU G880-PK

E718-PK E991-GY G836-WH

EXHAUST BRAKE ON/OFF SWITCH

C981-GY

SPEEDOMETER

ALTERNATOR

C974-PU

SIGNAL+

C973-GN

STARTER MOTOR

C973-GN

SIGNAL-

GROUND

9 PIN CAB CONNECTOR

- 12V +

- 12V +

- 12V +

BATTERY 3

BATTERY 2

BATTERY 1

TACHOMETER

+BAT. B -BAT. A J H J1587 - G J1587 + F J1939 SHIELD E J1939 - D J1939 + C

993-BR F713-OR 450-YL 451-BR

450-YL

SIGNAL+

451-BR

SIGNAL-

14 14 14 14 14 14 14 14

10A 10A 10A

ENGINE BLOCK

AWG AWG AWG AWG AWG AWG AWG AWG

GXL GXL GXL GXL GXL GXL GXL GXL

C978-BR C979-OR

H795-PK

SET/RESUME SWITCH

FAST IDLE ENABLE SWITCH H795-PK

H795-PK

E793-BU E794-YL A249-BK K990-GN K900-YL J906-BR 101-RD 101-RD 101-RD 101-RD 229-BK 229-BK 229-BK 229-BK G839-BU G838-BR C978-BR C979-OR K999-GN K980-PK L902-GN G840-PU C975-WH K982-YL

E793-BU E794-YL A249-BK K990-GN K900-YL

10A TO ALLISON AT/MT/HT SHIFT MODULATOR FOR AUTOMATIC TRANSMISSIONS

C974-PU

N/O MOMENTARY SWITCH

L902-GN

C975-WH

CRUISE CONTROL ON/OFF SWITCH

SERVICE BRAKE PEDAL POSITION SWITCH N/C

H795-PK (PEDAL RELEASED POSITION)

C992-PU

C992-PU SERVICE BRAKE PEDAL POSITION SWITCH #2 N/O G842-GY G882-WH G843-OR

+BAT. G882-WH (PEDAL RELEASED POSITION)

CLUTCH PEDAL POSITION SWITCH N/C H795-PK (PEDAL RELEASED POSITION)

RENR7872-01

C977-BU M990-OR G879-OR

C977-BU DIAGNOSTIC ENABLE SWITCH H795-PK

G844-PK

N/O MOMENTARY SWITCH

+BAT.

A/C HIGH PRESSURE SWITCH N/C

G844-PK C983-WH C984-YL 409-OR

TRANSMISSION NEUTRAL SWITCH N/O 409-OR

(TRANSMISSION IN GEAR)

E971-GN

H795-PK

E971-GN PASSIVE MAGNETIC VEHICLE SPEED SENSOR

COMPONENTS WITHIN THIS AREA ARE CATERPILLAR PROVIDED/OEM INSTALLED

8 Page, Color 2

ACCELERATOR PEDAL SENSOR/SWITCH SENSOR COMMON +8 V ACCELERATOR PEDAL POSITION

BK RD WH

B A C J403

ACCELERATOR PEDAL POSITION SENSOR

G808-BU G809-GN

1 2

G808-BU G809-GN G845-PU H795-PK C985-BU C986-BR G837-YL L901-GY G841-GN

H795-PK C985-BU C986-BR COOLING FAN SOLENOID

P403

+BATTERY SWITCHED

ARC SUPPRESSOR

28 29 30 31 14 61 10 12 13 15 16 1 36 37 27 26 3 17 38 39 57 43 9 8 42 34 50 70 48 52 53 55 63 65 67 69 20 19 35 44 56 58 40 21 59 60

CHECK ENGINE LAMP WARNING LAMP OUTPUT #1 OUTPUT #9

45 25 47 64 6

SERVICE BRAKE PEDAL POSITION SWITCH

22 23 2 46 49 54 62 24 41 51 32 33 68 5 4 66 11 18 7

CLUTCH PEDAL POSITION SWITCH INPUT #19

OUTPUT #2 OUTPUT #3 OUTPUT #4 EXHAUST BRAKE ON/OFF SWITCH SPEEDOMETER POSITIVE SPEEDOMETER NEGATIVE

INPUT SENSOR COMMON #2 INPUT #14 TACHOMETER POSITIVE TACHOMETER NEGATIVE

J1587 DATA LINK NEGATIVE J1587 DATA LINK POSITIVE J1939 DATA LINK SHIELD J1939 DATA LINK NEGATIVE J1939 DATA LINK POSITIVE IGNITION KEY SWITCH UNSWITCHED +BATTERY UNSWITCHED +BATTERY UNSWITCHED +BATTERY UNSWITCHED +BATTERY -BATTERY -BATTERY -BATTERY -BATTERY OUTPUT #7 OUTPUT #6 SET RESUME INPUT #1 (PTO ON/OFF SWITCH) INPUT #2 INPUT #18 OUTPUT #8 CRUISE CONTROL ON/OFF SWITCH INPUT #3

INPUT #5 INPUT #13 INPUT #6

+5V INPUT #7 ENGINE COOLANT LEVEL NORMAL ENGINE COOLANT LEVEL LOW INPUT #12 INPUT #11 VEHICLE SPEED IN POSITIVE VEHICLE SPEED IN NEGATIVE INPUT #8 (REMOTE PTO ACCELERATOR) AP SENSOR/SWITCH COMMON +8V ACCELERATOR PEDAL POSITION OUTPUT #5 INPUT SENSOR COMMON #1 INPUT #4

L901-GY G841-GN

+BATTERY UNSWITCHED CRT™ DIAGNOSTIC MODULE 216-7987

AMBER LAMP

BU

(+) BATTERY (+) BATTERY SWITCHED

LAMP FLASHER

STARTING CIRCUIT (-) BATTERY / SENSOR RETURN SENSOR / ACTUATOR SUPPLY RED LAMP

SIGNAL PLUS TO ECM SIGNAL MINUS TO ECM

GN

CONTROL PLUS FROM ECM CONTROL MINUS FROM ECM CAT DATA LINK J1939 DATA LINK RD WH

YL RD

+ -

TEMPERATURE SENSOR

RD WH

A B

YL RD

+ -

BU GN

A B

BU GN

s System Statu Alarm Over-Pressure Over-Temp Alarm em System Probl

Ser Com ia m l Da Po rt ta

YL RD

Al ar m

Re se t

TYPICAL CRT TM DIAGNOSTIC MODULE 160-7689

155-2269

3E-5179 7

8

9

10 11 12 1

2

6

5

3

4

2

1

237-0227 155-2267

3E-3370

B

A

GRAY

B

A

160-7690

3

2

1

C C

111-2416

B

A

230-4013

100-3320

B

A

RED 3

155-2252 12

11

10

9

8

116-6158

2

3

4

5

1

230-4013

153-9693

7

A

1

2

A

B

B

B

RED 3

2

1

6

Injection Actuation Pressure Sensor E-C9

Injector Harness Grommet

Intake Manifold Air Temperature Sensor E-C7

Injector Harness Connector E-C11

Atmospheric Pressure Sensor E-C2

Boost Pressure Sensor E-C3 Fuel Pressure Sensor E-C16

Inlet Air Heater Lamp Connector E-C4


LEFT SIDE VIEW INLET AIR HEATER RELAY LOCATIONS VARY

Inlet Air Heater Relay E-C8

Injection Actuation Pressure Control Valve E-C15 Engine Coolant Temperature Sensor E-C6

LEFT SIDE VIEW Primary Engine Speed / Timing Sensor (Top) E-C12

Secondary Engine Speed / Timing Sensor (Bottom) E-C13

J1 J2 E-C1 Engine Oil Pressure Sensor E-C5

LEFT-FRONT VIEW

Engine Control Module

THIS SCHEMATIC IS FOR THE C7 ON-HIGHWAY ENGINE (S/N: YPG and C7T) IDENT E E E E A

HARNESS 266-7696 266-7698 222-5905 222-5907 222-5917

CHG 01 (J2 / ENGINE) 01 (J2 / ENGINE) 04 (J2 / ENGINE) EARLIER PRODUCTION 04 (J2 / ENGINE) EARLIER PRODUCTION 05 (INJECTOR)

NOTE A: FUEL PRESSURE SENSOR AND ASSOCIATED HARNESS WIRING NOT PRESENT ON EARLY PRODUCTION ENGINES USING HARNESS 222-5905 OR 222-5907. NOTE X: USE KIT 156-7106 WHEN REPLACING CONNECTOR 153-9693. REFER TO REHS1809 FOR REPAIR AND INSTALLATION DETAILS.

C-7 YPG-C7T

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