GM Service Manual Online
For 1990-2009 cars only
Table 1: Engine Control Module (ECM) C
Table 2: Engine Control Module (ECM) E

Engine Control Module (ECM) C


Object Number: 1466972  Size: CF

Connector Part Information

    • AMP 0-368434-1
    • 64-Way F ECU 64P Conn Assembly (32-bit-B) (BK)

Pin

Wire Color

Circuit No.

Function

1

GY

596

5 Volt Reference

2

WH/PK

1031

5 Volt Reference

3

D-GN/WH

718

Low Reference

4

L-BU

1937

Low Reference

5

BN

1977

Low Reference

6

GY

474

5 Volt Reference

7-8

--

--

Not Used

9

L-BU

645

Low Reference

10-11

--

--

Not Used

12

PK/D-BU

1734

Ignition 1 Voltage

13

PK/D-BU

1734

Ignition 1 Voltage

14

--

--

Not Used

15

L-GN

1888

CPP Switch Signal (M/T)

16

--

--

Not Used

17

OG

440

Battery Positive Voltage

18

OG

440

Battery Positive Voltage

19

BK/WH

51

Ground

20

BK/WH

51

Ground

21

BK/WH

51

Ground

22

BK/WH

51

Ground

23-24

--

--

Not Used

25

D-GN/WH

762

A/C Request Signal

26

BN

20

Stop Lamp Switch Output

27

--

--

Not Used

28

D-GN

17

Stop Lamp Switch Output

29

D-BU

1161

APP Sensor 1 Signal

30

PU

203

A/C Pressure Sensor Signal

31

BK/WH

2051

Serial Data

32

--

--

Not Used

33

PK

1739

Ignition 1 Voltage

34

GY

473

High Speed Cooling Fan Relay Control

35

D-GN

67

A/C Clutch Relay Control

36

WH

441

Main Relay Control

37

YE/BK

183

Cruise Indicator Control

38

D-GN

817

Vehicle Speed Signal (M/T)

39-40

--

--

Not Used

41

GY

121

Engine Speed Signal

42

BN

497

Fuel Pump Relay Control

43

GY

1936

Fuel Level Sensor Signal

44

WH

1162

APP Sensor 2 Signal

45

D-GN/WH

397

Cruise Control Switch Signal

46

PU

1807

CAN Serial Data High

47

L-BU/PU

1036

Fuel Tank Pressure Sensor Signal

48

D-GN

602

Rough Road Sensor Signal

49

BK/WH

419

MIL Control

50

D-GN

355

Low Speed Cooling Fan Relay Control

51-55

--

--

Not Used

56

WH

135

Engine Coolant Temperature Gauge Control

57

BN

1671

HO2S2 Heater Control

58-60

--

--

Not Used

61

WH

30

Fuel Gauge Control

62

L-GN

413

HO2S2 Signal

63

YE

710

CAN Serial Data Low

64

YE

834

ABS

Engine Control Module (ECM) E


Object Number: 1501851  Size: CF

Connector Part Information

    • AMP 1-368434-2
    • 64-Way F ECU 64P Conn Assembly (32-bit-B) (BN)

Pin

Wire Color

Circuit No.

Function

1-2

--

--

Not Used

3

OG

423

Ignition Coil (IC) Timing Control 2 and 3

4

WH

406

Ignition Coil (IC) Timing Control 1 and 4

5-6

--

--

Not Used

7

YE

45

Intake Manifold Tuning Valve Sensor Signal

8

YE

492

Intake Manifold Tuning Valve Control

9-14

--

--

Not Used

15

L-BU

581

Electronic Throttle Control (ETC) (-)

16

L-BU

581

Electronic Throttle Control (ETC) (-)

17-18

--

--

Not Used

19

OG

423

Ignition Coil (IC) Timing Control 2 and 3

20

WH

406

Ignition Coil (IC) Timing Control 1 and 4

21

D-BU/WH

1876

Low Reference

22

L-BU

496

Knock Sensor Signal

23-24

--

--

Not Used

25

L-GN

410

Engine Coolant Temperature (ECT) Sensor Signal

26

D-BU/BK

429

Heated Oxygen Sensor (HO2S) 1 Signal

27

--

--

Not Used

28

L-BU

432

Manifold Absolute Pressure (MAP) Sensor Signal

29

BN/BK

486

Throttle Position (TP) Sensor 2 Signal

30

L-BU

468

Intake Air Temperature (IAT) Sensor Signal

31

D-BU/BK

582

Electronic Throttle Control (ETC) (+)

32

D-BU/BK

582

Electronic Throttle Control (ETC) (+)

33

L-BU

469

5-Volt Reference

34

WH

428

Heated Oxygen Sensor (HO2S) 1 Low Reference

35

WH

732

Low Reference

36

D-BU/WH

1869

Crankshaft Position (CKP) Sensor Signal

37

YE/BK

1868

Low Reference

38-40

--

--

Not Used

41

WH

425

Throttle Position (TP) Sensor 1 Signal

42

D-GN

435

Exhaust Gas Recirculation (EGR) Valve Position Sensor Signal

43-45

--

--

Not Used

46

L-BU/BK

1748

Camshaft Position (CMP) Sensor Signal

47-48

--

--

Not Used

49

BN

50

Heated Oxygen Sensor (HO2S) 1 Heater Control

50

PU

427

5-Volt Reference

51

WH

1876

Low Reference

52

L-BU

426

Low Reference

53

D-BU

436

Exhaust Gas Recirculation (EGR) Solenoid Valve Control

54

PK

1733

Ignition Voltage

55

L-GN

1744

Fuel Injector 4 Control

56

BN/WH

1745

Fuel Injector 3 Control

57-60

--

--

Not Used

61

YE

1578

Evaporative Emissions (EVAP) Canister Vent Solenoid Control

62

WH

452

Evaporative Emissions (EVAP) Canister Purge Solenoid Control

63

YE

1747

Fuel Injector 1 Control

64

BN/BK

1746

Fuel Injector 2 Control