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 (BK)

Pin

Wire Color

Circuit No.

Function

1

TN

407

Knock Sensor Low Reference Bank 2

2

--

--

Not Used

3

L-GN

5278

HO2S Input Pump Current Bank 1 Sensor 1

4

OG

5275

Camshaft Position (CMP) Sensor Signal - Intake Bank 1

5

GY

605

5-Volt Reference

6

--

--

Not Used

7

TN

470

Low Reference

8

PU

486

TP Sensor 2 Signal

9

D-GN/WH

2124

Ignition Control 4

10

WH/BK

5039

Crankshaft Position (CKP) Sensor Signal

11

--

--

Not Used

12

OG/BK

5272

Camshaft Actuator Solenoid Control - Intake Bank 2

13

L-GN

5282

Camshaft Actuator Solenoid Control - Exhaust Bank 1

14

--

--

Not Used

15

BN

582

TAC Motor Control - 2

16

GY/WH

3113

HO2S Heater Control Bank 1 Sensor 1

17

GY

1716

Knock Sensor Low Reference Bank 1

18

--

--

Not Used

19

PU/WH

1665

HO2S Reference Voltage Bank 1 Sensor 1

20

D-GN

5273

Camshaft Position (CMP) Sensor Signal - Exhaust Bank 1

21

GY

23

Generator Field Duty Cycle Signal

22

--

--

Not Used

23

YE

410

ECT Sensor Signal

24

--

--

Not Used

25

L-BU/WH

2126

Ignition Control 6

26

OG/WH

2122

Ignition Control 2

27-28

--

--

Not Used

29

PU

5284

Camshaft Actuator Solenoid Control - Intake Bank 1

30

WH/BK

5283

Camshaft Actuator Solenoid Control - Exhaust Bank 2

31

YE

581

TAC Motor Control - 1

32

--

--

Not Used

33

D-BU

496

Knock Sensor Signal Bank 1

34

--

--

Not Used

35

WH

5279

HO2S Pump Current Bank 1 Sensor 1

36

PU

5274

Camshaft Position (CMP) Sensor Signal - Exhaust Bank 2

37

BN

1174

Engine Oil Level Sensor Signal

38

D-GN/WH

357

Engine Oil Temperature Sensor Signal

39

TN

2752

Low Reference

40

TN/BK

231

Engine Oil Pressure Sensor Signal

41

D-GN

2125

Ignition Control 5

42

PU

2121

Ignition Control 1

43

OG

225

Generator Turn On Signal

44

D-BU/BK

5041

Intake Manifold Runner Control (IMRC) Solenoid Control

45

D-BU/BK

844

Fuel Injector 4 Control

46

PK/BK

1746

Fuel Injector 3 Control

47

TN/WH

845

Fuel Injector 5 Control

48

L-GN/WH

428

EVAP Canister Purge Valve Control

49

GY/BK

1798

Engine Ground - Shield

50

L-BU

1876

Knock Sensor Signal Bank 2

51

--

--

Not Used

52

TN

1664

HO2S Low Reference Bank 1 Sensor 1

53

YE

5276

Camshaft Position (CMP) Sensor Signal - Intake Bank 2

54

GY

2701

5-Volt Reference

55

D-GN

485

TP Sensor 1 Signal

56

OG/BK

5266

BARO Sensor Signal

57

GY

705

5-Volt Reference

58

L-BU

2123

Ignition Control 3

59

PU/WH

5024

CKP Low Reference

60-61

--

--

Not Used

62

L-GN/BK

1745

Fuel Injector 2 Control

63

TN

1744

Fuel Injector 1 Control

64

YE/BK

846

Fuel Injector 6 Control

Engine Control Module (ECM) C2


Object Number: 1331455  Size: CH

Connector Part Information

    • 1928403386
    • 64-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

PK

5290

Ignition 1 Voltage

2

BK

3122

HO2S Heater Low Control [- Bank 2 Sensor 1]

3

PK

239

Ignition 1 Voltage

4

D-BU

473

High Speed Cooling Fan Relay Control

5

WH

121

Engine Speed Signal

6

--

--

Not Used

7

WH/BK

1164

5-Volt Reference

8

PU

1272

Low Reference

9

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

10

WH

5371

Stop Lamp Switch Signal

11

TN

472

IAT Sensor Signal

12

D-GN

890

Fuel Tank Pressure Sensor Signal

13

--

--

Not Used

14

GY/BK

87

Cruise Control Resume/Accel Switch Signal

15

OG/BK

463

Requested Torque Signal

16

--

--

Not Used

17

PK

5290

Ignition 1 Voltage

18

--

--

Not Used

19

D-GN/WH

465

Fuel Pump Relay Control

20

D-GN

335

Low Speed Cooling Fan Relay Control

21

--

--

Not Used

22

D-GN

389

Vehicle Speed Signal Output

23

TN/WH

2500

CAN Serial Data High

24

BN

5069

Engine Controls Main Relay Control

25

BK

2759

Low Reference

26

BK

2760

MAF Sensor Low Reference

27-28

--

--

Not Used

29

PU/WH

1668

HO2S Signal Bank 1 Sensor 2

30

D-BU

84

Cruise Control Set/Coast Switch

31

YE

5

Crank Voltage

32

OG/BK

1786

PNP Signal

33

WH

1310

EVAP Canister Vent Solenoid Control

34

--

--

Not Used

35

YE/BK

625

Starter Relay Control

36

OG

540

Battery Positive Voltage

37

TN/BK

464

Delivered Torque Signal

38

--

--

Not Used

39

GY

596

5-Volt Reference

40

BN

1271

Low Reference

41

--

--

Not Used

42

PU

1589

Fuel Level Sensor Signal - Primary

43

YE

492

MAF Sensor Signal

44

L-BU

1162

APP Sensor 2 Signal

45

GY

397

Cruise Control On Switch Signal

46

PU

420

Cruise Control Release Signal

47

--

--

Not Used

48

D-GN

1049

Class 2 Serial Data

49

D-GN/WH

459

A/C Clutch Relay Control

50

BN/WH

419

MIL Control

51-54

--

--

Not Used

55

TN

2501

CAN Serial Data Low

56

TN

1274

5-Volt Reference

57

TN/WH

1669

HO2S Low Reference Sensor 1

58

D-GN

500

Accessory Voltage

59

--

--

Not Used

60

D-BU

1161

APP Sensor Signal 1

61-64

--

--

Not Used