GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2002 🢒 Isuzu T-Series (Truck Line C) 🢒 Brakes 🢒 Air Brakes 🢒 Engine Controls Connector End Views
Table 1: Accel Sensor
Table 2: Ambient Temperature Meter (ATM) Sensor
Table 3: Automatic Transmission Modulator
Table 4: ECM Engine Stop Relay
Table 5: Engine Coolant Temperature Sensor
Table 6: Engine Speed Sensor
Table 7: Fuel Pressure Sensor
Table 8: Fuel Sender-Single Fuel Tank
Table 9: LH Fuel Sender-Dual Fuel Tank
Table 10: RH Fuel Tank Sender-Dual Fuel Tank
Table 11: Fuel Sender and Transfer Pump Control Module
Table 12: Fuel Transfer Pump
Table 13: Fuel Transfer Pump Relay
Table 14: Fuel Temperature Sensor
Table 15: Glow Plug Relay C1
Table 16: Glow Plug Relay C2
Table 17: High Idle Switch
Table 18: Injection Pump Speed Sensor
Table 19: Low Coolant Level Indicator Switch
Table 20: Multifunction Alarm Module (MFAM) C2 (KPJ)
Table 21: Pressure Control Valve 1
Table 22: Pressure Control Valve 2
Table 23: Pressure Control Valve Relay
Table 24: Speedo Adaptor
Table 25: Turbo Boost Pressure Sensor
Table 26: Vehicle Speed Sensor (Automatic)
Table 27: Vehicle Speed Sensor (Manual)

Accel Sensor


Object Number: 237082 Size: CH

Connector Part Information
    • 6-Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

BLK

283

Ground

B

WHT

281

Accelerator Pedal Signal

C

RED

282

Accelerator Pedal Signal Supply

D

BLU

289

Ground

E

GRN

287

Accelerator Pedal Signal

F

YEL

288

Accelerator Pedal Signal Supply

Ambient Temperature Meter (ATM) Sensor


Object Number: 236598 Size: CH

Connector Part Information
    • 2-Way Female
    • (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLU/WHT

20

ATM Temperature Sensor Signal

B

BLU/BLK

21

Low Reference

Automatic Transmission Modulator


Object Number: 68721 Size: CH

Connector Part Information
    • 15300027
    • 2-Way F Metri-Pack 280 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

323

Automatic Transmission Modulator Relay Signal

B

BLK

150

Ground

ECM Engine Stop Relay


Object Number: 39670 Size: CH

Connector Part Information
    • 12129716
    • 4-Way F Metri-Pack 280 Series, Flexlock, Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

30

WHT

125

Stop Lamp Switch Signal

85

RED/WHT

127

Ignition Main Relay Signal

86

BLK

128

Ground

87

WHT/RED

126

ECM Engine Stop Relay Signal

Engine Coolant Temperature Sensor


Object Number: 516611 Size: CH

Connector Part Information
    • 3 Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

YEL/BLK

35

Engine Coolant Temperature Sensor Signal

B

GRN

37

Engine Coolant Temperature Sensor Signal to IP Cluster

C

BLU/BLK

36

Low Reference

Engine Speed Sensor


Object Number: 236598 Size: CH

Connector Part Information
    • 2-Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

BLK

14

Engine Speed Sensor Signal

B

WHT

15

Engine Speed Sensor Signal

Fuel Pressure Sensor


Object Number: 240168 Size: CH

Connector Part Information
    • 3-Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

BLK

7

Ground

B

RED

9

Fuel Pressure Sensor Signal

C

WHT

8

Fuel Pressure Sensor Supply Voltage

Fuel Sender-Single Fuel Tank


Object Number: 38608 Size: CH

Connector Part Information
    • 12162189
    • 4-Way F Metri-Pack 150.2 Series Pull To Seat, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

350

Ground

B-C

--

--

Not Used

D

PPL

30

Fuel Gauge Sensor Signal

LH Fuel Sender-Dual Fuel Tank


Object Number: 38608 Size: CH

Connector Part Information
    • 12162189
    • 4-Way F Metri-Pack 150.2 Series Pull To Seat, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

350

Ground

B-C

--

--

Not Used

D

DK BLU

1936

LH Fuel Gage Sensor Signal

RH Fuel Tank Sender-Dual Fuel Tank


Object Number: 38608 Size: CH

Connector Part Information
    • 12162189
    • 4-Way F Metri-Pack 150.2 P2S, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

350

Ground

B-C

--

--

Not Used

D

DK BLU

1937

RH Fuel Gage Sensor Signal

Fuel Sender and Transfer Pump Control Module


Object Number: 73212 Size: CH

Connector Part Information
    • 12059573
    • 6-Way F Metri-Pack 280 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

139

Ignition 1 Voltage

B

LT BLU

1937

RH Fuel Gage Sensor Signal

C

DK BLU

1936

LH Fuel Gage Sensor Signal

D

LT GRN

497

Fuel Pump Relay Control

E

BLK

350

Ground

F

PPL

30

Fuel Gage Sensor Signal

Fuel Transfer Pump


Object Number: 258174 Size: CH

Connector Part Information
    • 12010973
    • 2-Way M Weather Pack (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

350

Ground

B

GRY

120

Fuel Pump Motor Supply Voltage

Fuel Transfer Pump Relay


Object Number: 39670 Size: CH

Connector Part Information
    • 12129716
    • 4-Way F Metri-Pack 280 Series, Flexlock, Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

30

PNK

139

Ignition 1 Voltage

85

PNK

139

Ignition 1 Voltage

86

LT GRN

497

Fuel Pump Relay Control

87

GRY

120

Fuel Pump Motor Supply Voltage

Fuel Temperature Sensor


Object Number: 236598 Size: CH

Connector Part Information
    • 2-Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

BLU/RED

38

Fuel Temperature Sensor Signal

B

BLU/BLK

39

Low Reference

Glow Plug Relay C1


Object Number: 236009 Size: CH

Connector Part Information
    • 2-Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

RED

50

Battery Positive Voltage

B

RED/BLK

45

Glow Plug Supply Voltage

Glow Plug Relay C2


Object Number: 236009 Size: CH

Connector Part Information
    • 2-Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

BLK

49

Ground

B

BLK/RED

48

Glow Plug Supply Voltage

High Idle Switch


Object Number: 378928 Size: CH

Connector Part Information
    • 6-Way
    • Female

Pin

Wire Color

Circuit No.

Function

1

PNK/BLK

240

Idle Control Down

2

RED

238

Ignition 1 Voltage

3

PNK/GRN

239

Idle Control Up

4-6

--

--

Not Used

Injection Pump Speed Sensor


Object Number: 236598 Size: CH

Connector Part Information
    • 2-Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

GRN

11

Injection Pump Speed Sensor Signal

B

RED

12

Injection Pump Speed Sensor Signal

Low Coolant Level Indicator Switch


Object Number: 236598 Size: CH

Connector Part Information
    • 12052641
    • ASM 2-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

1478

Low Coolant Sensor Signal

B

BLK

150

Ground

Multifunction Alarm Module (MFAM) C2 (KPJ)


Object Number: 280782 Size: CH

Connector Part Information
    • 12064760
    • 4-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

252

Engine Shutdown Alarm Signal

B-C

--

--

Not Used

D

GRY

65

Automatic Engine Shutdown Engine Coolant Temperature Switch Signal

Pressure Control Valve 1


Object Number: 235949 Size: CH

Connector Part Information
    • 2-Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

GRN

1

Pressure Control Valve Relay Voltage Supply

B

BRN

3

Pressure Control Valve 1 Control

Pressure Control Valve 2


Object Number: 235949 Size: CH

Connector Part Information
    • 2-Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

GRN

2

Pressure Control Valve Relay Voltage Supply

B

BRN/BLK

5

Pressure Control Valve 2 Control

Pressure Control Valve Relay


Object Number: 39670 Size: CH

Connector Part Information
    • 12129716
    • 4-Way F Metri-Pack 280 Series, Flexlock, Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

30

RED

7

Ignition 1 Voltage

85

RED/BLK

12

Battery Positive Voltage

86

BLK

14

Ground

87

GRN

8

Pressure Control Valve Relay Voltage Supply

Speedo Adaptor


Object Number: 73152 Size: CH

Connector Part Information
    • 12084944
    • 16 F MIC/P 100 (BLK)

Pin

Wire Color

Circuit No.

Function

A1

GRY/BLK

418

Rear Axle-Two Speed Switch Signal

A2-A8

--

--

Not Used

B1

BRN

421

Ignition 1 Voltage

B2

PPL/WHT

425

Vehicle Speed Sensor Signal

B3

LT GRN/BLK

426

Vehicle Speed Sensor

B4

--

--

Not Used

B5

BLK

428

Ground

B6-B7

--

--

Not Used

B8

WHT

422

Speedometer Signal

Turbo Boost Pressure Sensor


Object Number: 339127 Size: CH

Connector Part Information
    • 12186893
    • 3-Way Female

Pin

Wire Color

Circuit No.

Function

1

GRY

596

5-Volt Reference

2

BLK

808

Sensor Return

3

WHT

900

Turbo Boost Pressure Signal

Vehicle Speed Sensor (Automatic)


Object Number: 35437 Size: CH

Connector Part Information
    • 12052644
    • 2-Way F Metri-Pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

821

Vehicle Speed Sensor Signal

B

LT GRN/BLK

822

Vehicle Speed Sensor Signal

Vehicle Speed Sensor (Manual)


Object Number: 523620 Size: CH

Connector Part Information
    • 3-Way Female
    • (GRN)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/BLK

24

Vehicle Speed Sensor Signal

B

PPL/WHT

25

Vehicle Speed Sensor Signal

C

PNK

26

Ignition 1 Voltage