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

    • 15356822
    • 54-Way F Micro 64 Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

YE

581

TAC Motor Control - 1

2

BK/WH

51

HO2S Heater Low Control

3

PK/BK

1746

Fuel Injector 3 Control

4

L-BU

1110

Intake Manifold Runner Control Solenoid Control

5

D-GN/WH

428

EVAP Canister Purge Solenoid Control

6

BK

452

Low Reference

7

GY

1981

HO2S High Signal

8

--

--

Not Used

9

--

--

Not Available

10

PU

574

Low Reference

11

PU/WH

1665

HO2S Input Pump Current

12

GY

1979

HO2S Low Reference

13

--

--

Not Available

14

YE

1157

Ignition Coil 5 Control

15

PK

1155

Ignition Coil 3 Control

16

L-BU

1153

Ignition Coil 1 Control

17

BN

582

TAC Motor Control - 2

18

TN/WH

551

HO2S Heater Low Control

19

BK

1744

Fuel Injector 1 Control

20

BK/WH

845

Fuel Injector 5 Control

21

--

--

Not Used

22

D-BU

496

Knock Sensor 1 Signal

23

PU/WH

1668

HO2S High Signal

24

YE/BK

487

TP Sensor 3 Signal

25

YE

410

ECT Sensor Signal

26

PU/WH

652

Low Reference

27

--

--

Not Available

28

PU

412

HO2S Reference Voltage

29

TN

1664

HO2S Output Pump Current

30

TN

1158

Ignition Coil 6 Control

31

PU

1156

Ignition Coil 4 Control

32

D-BU

1154

Ignition Coil 2 Control

33

YE

581

TAC Motor Control - 1

34

BK/WH

151

HO2S Heater Low Control

35

L-GN/BK

1745

Fuel Injector 2 Control

36

YE/BK

846

Fuel Injector 6 Control

37

--

--

Not Used

38

L-BU

1876

Knock Sensor 2 Signal

39

TN

1671

HO2S Low Signal

40

D-GN

485

TP Sensor 1 Signal

41

--

--

Not Used

42

BN/WH

633

CMP Sensor Signal

43

TN

1667

HO2S Output Pump Current

44

TN/WH

1653

HO2S Reference Voltage

45-48

--

--

Not Available

49

BN

582

TAC Motor Control - 2

50

BK/WH

751

HO2S Heater Low Control

51

GY

416

5-Volt Reference A

52

L-BU/BK

844

Fuel Injector 4 Control

53

--

--

Not Available

54

YE/BK

457

Low Reference

55

TN/WH

1669

HO2S Low Signal

56

YE

492

MAF Sensor Signal

57

TN

472

IAT Sensor Signal

58

PU

486

TP Sensor 2 Signal

59

YE

573

CKP Sensor Signal

60

TN

413

HO2S Low Reference

61

PU

1666

HO2S Input Pump Current

62

BK/WH

451

Ground

63-64

--

--

Not Available

Engine Control Module (ECM) C2


Object Number: 816165  Size: CH

Connector Part Information

    • 15356823
    • 37-Way F Micro 64 Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

D-BU

473

High Speed Cooling Fan Relay Control

2-6

--

--

Not Available

7

TN

1274

5-Volt Reference

8

D-BU

1161

APP Sensor 1 Signal

9

TN/BK

231

Oil Pressure Switch Signal

10

GY

397

Cruise Control On Switch Signal

11

RD

225

Generator Turn On Signal

12

TN

2501

CAN Low

13

D-GN/WH

459

A/C Compressor Clutch Relay Control

14

--

--

Not Available

15

OG

480

Battery Positive Voltage

16

OG

2740

Ignition 1 Voltage

17

--

--

Not Available

18

WH

1310

EVAP Canister Vent Solenoid Control

19-20

--

--

Not Available

21

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

22-23

--

--

Not Available

24

BN

1271

Low Reference

25

BK

2759

Low Reference

26

BN

86

Cruise Control Release Signal

27

L-BU

20

Stop Lamp Switch Signal

28

OG/BK

463

Requested Torque Signal

29

TN/WH

2500

CAN High

30

L-GN

497

Fuel Pump Relay Control

31

WH

2561

Main Relay Control

32

OG

2740

Ignition 1 Voltage

33-34

--

--

Not Available

35

WH

121

Engine Speed Signal

36

--

--

Not Available

37

D-GN

890

Fuel Tank Pressure Sensor Signal

38

PU

30

Fuel Level Sensor Signal

39

--

--

Not Available

40

L-BU

1162

APP Sensor 2 Signal

41

--

--

Not Available

42

GY/BK

87

Cruise Control Resume/Accel Switch Signal

43

D-BU

84

Cruise Control Set/Coast Switch Signal

44

WH

1909

Vehicle Speed Signal

45

TN/BK

2500

CAN High

46

--

--

Not Available

47

PK

339

Ignition 1 Voltage

48

OG

2740

Ignition 1 Voltage

49

--

--

Not Available

50

D-GN

335

Low Speed Cooling Fan Relay Control

51

--

--

Not Available

52

TN/BK

464

Delivered Torque Signal

53

PU

1319

Engine/Radio Serial Data K-Line

54-55

--

--

Not Available

56

WH/BK

1164

5-Volt Reference

57-60

--

--

Not Available

61

TN

2501

CAN Low

62

--

--

Not Available

63

GY

2709

5-Volt Reference

64

--

--

Not Available