GM Service Manual Online
For 1990-2009 cars only
Table 1: Engine Control Module (ECM) C1
Table 2: Engine Control Module (ECM) C2

Engine Control Module (ECM) C1


Object Number: 816165  Size: CH

Connector Part Information

    • 1928403379
    • 64-Way F (BLK)

Pin

Wire Color

Circuit No.

Function

1

TAN

407

Knock Sensor Low Reference Bank 2

2

--

--

Not Used

3

LT GRN

5278

HO2S Input Pump Current Bank 1 Sensor 1

4

ORN

5275

Camshaft Position (CMP) Sensor Signal - Intake Bank 1

5

GRY

605

5-Volt Reference

6

--

--

Not Used

7

TAN

470

Low Reference

8

PPL

486

TP Sensor 2 Signal

9

DK GRN/WHT

2124

Ignition Control 4

10

WHT/BLK

5039

Crankshaft Position (CKP) Sensor Signal

11

--

--

Not Used

12

ORN/BLK

5272

Camshaft Actuator Solenoid Control - Intake Bank 2

13

LT GRN

5282

Camshaft Actuator Solenoid Control - Exhaust Bank 1

14

--

--

Not Used

15

BRN

582

TAC Motor Control - 2

16

GRY/WHT

3113

HO2S Heater Control Bank 1 Sensor 1

17

GRY

1716

Knock Sensor Low Reference Bank 1

18

--

--

Not Used

19

PPL/WHT

1665

HO2S Reference Voltage Bank 1 Sensor 1

20

DK GRN

5273

Camshaft Position (CMP) Sensor Signal - Exhaust Bank 1

21

GRY

23

Generator Field Duty Cycle Signal

22

--

--

Not Used

23

YEL

410

ECT Sensor Signal

24

--

--

Not Used

25

LT BLU/WHT

2126

Ignition Control 6

26

ORN/WHT

2122

Ignition Control 2

27-28

--

--

Not Used

29

PPL

5284

Camshaft Actuator Solenoid Control - Intake Bank 1

30

WHT/BLK

5283

Camshaft Actuator Solenoid Control - Exhaust Bank 2

31

YEL

581

TAC Motor Control - 1

32

--

--

Not Used

33

DK BLU

496

Knock Sensor Signal Bank 1

34

--

--

Not Used

35

WHT

5279

HO2S Pump Current Bank 1 Sensor 1

36

PPL

5274

Camshaft Position (CMP) Sensor Signal - Exhaust Bank 2

37

BRN

1174

Engine Oil Level Sensor Signal

38

DK GRN/WHT

357

Engine Oil Temperature Sensor Signal

39

TAN

2752

Low Reference

40

TAN/BLK

231

Engine Oil Pressure Sensor Signal

41

DK GRN

2125

Ignition Control 5

42

PPL

2121

Ignition Control 1

43

ORN

225

Generator Turn On Signal

44

DK BLU/BLK

5041

Intake Manifold Runner Control (IMRC) Solenoid Control

45

DK BLU/BLK

844

Fuel Injector 4 Control

46

PNK/BLK

1746

Fuel Injector 3 Control

47

TAN/WHT

845

Fuel Injector 5 Control

48

LT GRN/WHT

428

EVAP Canister Purge Valve Control

49

GRY/BLK

1798

Engine Ground - Shield

50

LT BLU

1876

Knock Sensor Signal Bank 2

51

--

-1

Not Used

52

TAN

1664

HO2S Low Reference Bank 1 Sensor 1

53

YEL

5276

Camshaft Position (CMP) Sensor Signal - Intake Bank 2

54

GRY

2701

5-Volt Reference

55

DK GRN

485

TP Sensor 1 Signal

56

ORN/BLK

5266

BARO Sensor Signal

57

GRY

705

5-Volt Reference

58

LT BLU

2123

Ignition Control 3

59

PPL/WHT

5024

CKP Low Reference

60-61

--

--

Not Used

62

LT GRN/BLK

1745

Fuel Injector 2 Control

63

TAN

1744

Fuel Injector 1 Control

64

YEL/BLK

846

Fuel Injector 6 Control

Engine Control Module (ECM) C2


Object Number: 1331455  Size: CH

Connector Part Information

    • 1928403386
    • 64-Way F (BLK)

Pin

Wire Color

Circuit No.

Function

1

PNK

5290

Ignition 1 Voltage

2

-

3122

Not Used

3

PNK

239

Ignition 1 Voltage

4

DK BLU

473

High Speed Cooling Fan Relay Control

5

WHT

121

Engine Speed Signal

6

--

--

Not Used

7

WHT/BLK

1164

5-Volt Reference

8

PPL

1272

Low Reference

9

RED/BLK

380

A/C Refrigerant Pressure Sensor Signal

10

WHT

5371

Stop Lamp Switch Signal

11

TAN

472

IAT Sensor Signal

12

DK GRN

890

Fuel Tank Pressure Sensor Signal

13

--

--

Not Used

14

GRY/BLK

87

Cruise Control Resume/Accel Switch Signal

15

ORN/BLK

463

Requested Torque Signal

16

--

--

Not Used

17

PNK

5290

Ignition 1 Voltage

18

--

--

Not Used

19

DK GRN/WHT

465

Fuel Pump Relay Control

20

DK GRN

335

Low Speed Cooling Fan Relay Control

21

--

--

Not Used

22

DK GRN

389

Vehicle Speed Signal Output

23

TAN/WHT

2500

CAN Serial Data High

24

BRN

5069

Engine Controls Main Relay Control

25

BLK

2759

Low Reference

26

BLK

2760

MAF Sensor Low Reference

27

--

--

Not Used

28

--

--

Not Used

29

PPL/WHT

1668

HO2S Signal Bank 1 Sensor 2

30

DK BLU

84

Cruise Control Set/Coast Switch

31

YEL

5

Crank Voltage

32

ORN/BLK

1786

PNP Signal

33

WHT

1310

EVAP Canister Vent Solenoid Control

34

--

--

Not Used

35

YEL/BLK

625

Starter Relay Control

36

ORN

540

Battery Positive Voltage

37

TAN/BLK

464

Delivered Torque Signal

38

--

--

Not Used

39

GRY

596

5-Volt Reference

40

BRN

1271

Low Reference

41

--

--

Not Used

42

PPL

1589

Fuel Level Sensor Signal - Primary

43

YEL

492

MAF Sensor Signal

44

LT BLU

1162

APP Sensor 2 Signal

45

GRY

397

Cruise Control On Switch Signal

46

PPL

420

Cruise Control Release Signal

47

--

--

Not Used

48

DK GRN

1049

Class 2 Serial Data

49

DK GRN/WHT

459

A/C Clutch Relay Control

50

BRN/WHT

419

MIL Control

51-54

--

--

Not Used

55

TAN

2501

CAN Serial Data Low

56

TAN

1274

5-Volt Reference

57

TAN/WHT

1669

HO2S Low Reference Sensor 1

58

DK GRN

500

Accessory Voltage

59

--

--

Not Used

60

DK BLU

1161

APP Sensor Signal 1

61-64

--

--

Not Used