GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Astro - 4WD 🢒 Engine 🢒 Engine Controls - 4.3L 🢒 Engine Controls Connector End Views
Table 1: Camshaft Position (CMP) Sensor
Table 2: Central Sequential Fuel Injection (CSFI)
Table 3: Crankshaft Position (CKP) Sensor
Table 4: Engine Coolant Temperature (ECT) Sensor
Table 5: Evaporator Emission (EVAP) Canister Purge Solenoid
Table 6: Evaporator Emission (EVAP) Canister Vent Solenoid
Table 7: Fuel Tank Pressure (FTP) Sensor
Table 8: Fuel Pump and Sender Assembly
Table 9: Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
Table 10: Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
Table 11: Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
Table 12: Idle Air Control (IAC) Valve
Table 13: Ignition Coil
Table 14: Ignition Control Module (ICM)
Table 15: Intake Air Temperature (IAT) Sensor
Table 16: Knock Sensor (KS)
Table 17: Manifold Absolute Pressure (MAP) Sensor
Table 18: Mass Air Flow (MAF) Sensor
Table 19: Throttle Position (TP) Sensor
Table 20: Vehicle Speed Sensor (VSS)

Camshaft Position (CMP) Sensor


Object Number: 684807 Size: CH

Connector Part Information
    • 12110293
    • 3-Way F 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK/BLK

632

Low Reference

B

BRN/WHT

633

CMP Sensor Signal

C

RED

631

12 Volt Reference

Central Sequential Fuel Injection (CSFI)


Object Number: 39782 Size: CH

Connector Part Information
    • 12177083
    • 12-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

845

Fuel Injector 5 Control

B

PNK

439

Ignition 1 Voltage

C

PNK/BLK

1746

Fuel Injector 3 Control

D

PNK

439

Ignition 1 Voltage

E

PNK

439

Ignition 1 Voltage

F

BLK

1744

Fuel Injector 1 Control

G

LT GRN/BLK

1745

Fuel Injector 2 Control

H

PNK

439

Ignition 1 Voltage

J

PNK

439

Ignition 1 Voltage

K

LT BLU/BLK

844

Fuel Injector 4 Control

L

PNK

439

Ignition 1 Voltage

M

YEL/BLK

846

Fuel Injector 6 Control

Crankshaft Position (CKP) Sensor


Object Number: 516611 Size: CH

Connector Part Information
    • 12059595
    • 3-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

1867

12 Volt Reference

B

PPL

574

Low Reference

C

YEL

573

CKP Sensor (1) Signal

Engine Coolant Temperature (ECT) Sensor


Object Number: 237066 Size: CH

Connector Part Information
    • 12162194
    • 2-Way F 150.2 Series, Pull-To-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

2761

Low Reference

B

YEL

410

ECT Sensor Signal

Evaporator Emission (EVAP) Canister Purge Solenoid


Object Number: 684795 Size: CH

Connector Part Information
    • 12052643
    • 2-Way F Metri-Pack 150 Series, Sealed (RED)

Pin

Wire Color

Circuit No.

Function

A

PNK

539

Ignition 1 Voltage

B

DK

GRN/WHT

428

EVAP Canister Purge Solenoid Control

Evaporator Emission (EVAP) Canister Vent Solenoid


Object Number: 684795 Size: CH

Connector Part Information
    • 12052643
    • 2-Way F Metri-Pack 150 Series, Sealed (RED)

Pin

Wire Color

Circuit No.

Function

A

ORN

539

Ignition 1 Voltage

B

WHT

1310

EVAP Canister Vent Solenoid Control

Fuel Tank Pressure (FTP) Sensor


Object Number: 516611 Size: CH

Connector Part Information
    • 12059595
    • 3-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

470

Low Reference

B

DK GRN

890

Fuel Tank Pressure Sensor Signal

C

GRY/BLK

474

5 Volt Reference

Fuel Pump and Sender Assembly


Object Number: 456551 Size: CH

Connector Part Information
    • 12160482
    • 4-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

1589

Fuel Level Sensor Signal

B

GRY

120

Fuel Pump Supply Voltage

C

BLK

1650

Ground

D

BLK

470

Low Reference

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1


Object Number: 280761 Size: CH

Connector Part Information
    • 12160825
    • 4-Way M Metri-Pack 150 Series, Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

A

TAN

1664

HO2S Low Signal (Bank 1 Sensor 1)

B

PPL/WHT

1665

HO2S High Signal (Bank 1 Sensor 1)

C

BLK/WHT

3113

HO2S Heater Low Control (Bank 1 Sensor 1)

D

PNK

539

Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2


Object Number: 474210 Size: CH

Connector ParI Information
    • 12176897
    • 4-Way F Metri-Pack 150 Series, Sealed (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

TAN/WHT

1669

HO2S Low Signal (Bank 1 Sensor 2)

B

PPL/WHT

1668

HO2S High Signal (Bank 1 Sensor 2)

C

BRN

2391

HO2S Heater Low Control (Bank 1 Sensor 2)

D

PNK

539

Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1


Object Number: 456551 Size: CH

Connector Part Information
    • 12160482
    • 4-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

1667

HO2S Low Signal (Bank 2 Sensor 1)

B

PPL

1666

HO2S High Signal (Bank 2 Sensor 1)

C

LT GRN

3212

HO2S Heater Low Control (Bank 2 Sensor 1)

D

PNK

539

Ignition 1 Voltage

Idle Air Control (IAC) Valve


Object Number: 38608 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

LT GRN/BLK

444

IAC Coil B Low Control

B

LT GRN/WHT

1749

IAC Coil B High Control

C

LT BLU/BLK

1748

IAC Coil A Low Control

D

LT BLU/WHT

1747

IAC Coil A High Control

Ignition Coil


Object Number: 68743 Size: CH

Connector Part Information
    • 12146121
    • 3-Way F Metri-Pack 150 Series, Sealed (BRN)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Ignition 1 Voltage

B

--

--

Not Used

C

WHT/BLK

1847

Ignition Coil Control

Ignition Control Module (ICM)


Object Number: 38608 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Ignition 1 Voltage

B

WHT

423

IC Timing Control

C

BLK

550

Ground

D

WHT/BLK

1847

Ignition Coil Control

Intake Air Temperature (IAT) Sensor


Object Number: 646180 Size: CH

Connector Part Information
    • 12162198
    • 2-Way F Metri-Pack 150.2 Series, Pull-To-Seat (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

2760

Low Reference

B

TAN

472

IAT Sensor Signal

Knock Sensor (KS)


Object Number: 684833 Size: CH

Connector Part Information
    • 12129140
    • 2-Way F Metri-Pack 280.1 Series, Sealed, Pull-To-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK BLU

496

KS (1) Signal

B

GRY

1716

Knock Sensor Return

Manifold Absolute Pressure (MAP) Sensor


Object Number: 684840 Size: CH

Connector Part Information
    • 12129946
    • 3-Way F Metri-Pack 150 Series, Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN/BLK

469

Low Reference

B

LT GRN

432

MAP Sensor Signal

C

GRY

2704

5 Volt Reference

Mass Air Flow (MAF) Sensor


Object Number: 516611 Size: CH

Connector Part Information
    • 12059595
    • 3-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

492

MAF Sensor Signal

B

BLK

451

Ground

C

PNK

539

Ignition 1 Voltage

Throttle Position (TP) Sensor


Object Number: 258299 Size: CH

Connector Part Information
    • 12078090
    • 3-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

2701

5 Volt Reference

B

BLK

2752

Low Reference

C

DK BLU

417

TP Sensor Signal

Vehicle Speed Sensor (VSS)


Object Number: 237066 Size: CH

Connector Part Information
    • 12162194
    • 2-Way F Metri-Pack 150.2 Series, Pull-to-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

821

VSS High Signal

B

LT GRN/BLK

822

VSS Low Signal