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

Engine Control Module (ECM) C1


Object Number: 1331454  Size: CH

Connector Part Information

  • OEM: 1928403513
  • Service: 15306245
  • Description: 64-Way F Bosch (BK)

Terminal Part Information

  • Pins: 1, 2, 3, 4, 5, 7, 8, 9, 10, 12, 13, 15, 16, 17, 18, 19, 20, 21, 23, 25, 26, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 62, 63, 64
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Engine Control Module (ECM) C1

Pin

Wire Color

Circuit No.

Function

1

TN

407

Low Reference

2

OG

5280

HO2S Input Pump Current - Bank 2 Sensor 1

3

L-GN

5278

HO2S Input Pump Current - Bank 1 Sensor 1

4

OG

5275

CMP Sensor Signal - Intake Bank 1

5

GY

605

5-Volt Reference A

6

--

--

Not Used

7

TN

470

Low Reference

8

PU

486

TP Sensor Signal 2

9

D-GN/WH

2124

IC 4 Control

10

WH/BK

5039

CKP Sensor Signal

11

--

--

Not Used

12

OG/BK

5272

CMP Actuator Solenoid Control - Intake Bank 2

13

L-GN

5282

CMP Actuator Solenoid Control - Exhaust Bank 1

14

--

--

Not Used

15

TN

582

TAC Motor Control - 2

16

GY/WH

3113

HO2S Heater Low Control - Bank 1 Sensor 1

17

GY

1716

Low Reference

18

TN

1667

HO2S Low Reference - Bank 2 Sensor 1

19

PU/WH

1665

HO2S Reference Voltage - Bank 1 Sensor 1

20

D-GN

5273

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

IC 6 Control

26

OG/WH

2122

IC 2 Control

27-28

--

--

Not Used

29

PK

5284

CMP Actuator Solenoid Control - Intake Bank 1

30

WH/BK

5283

CMP Actuator Solenoid Control - Exhaust Bank 2

31

YE

581

TAC Motor Control - 1

32

L-GN

3212

HO2S Heater Low Control - Bank 2 Sensor 1

33

D-BU

496

Knock Sensor 1 Signal

34

PU

1666

HO2S Reference Voltage - Bank 2 Sensor 1

35

WH

5279

HO2S Pump Current - Bank 1 Sensor 1

36

PU

5274

CMP Sensor Signal - Exhaust Bank 2

37

BN

1174

Oil Level Switch Signal

38

D-GN/WH

357

Oil Temperature Sensor Signal

39

TN

2752

Low Reference

40

TN/BK

231

Oil Pressure Switch Signal

41

D-GN

2125

IC 5 Control

42

PU

2121

IC 1 Control

43

OG

225

Generator Turn On Signal

44

D-BU/BK

5041

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

D-GN/WH

428

EVAP Canister Purge Solenoid Control

49

GY/BK

1798

Drain Wire

50

L-BU

1876

Knock Sensor 2 Signal

51

PU/WH

5281

HO2S Pump Current - Bank 2 Sensor 1

52

TN

1664

HO2S Low Reference - Bank 1 Sensor 1

53

YE

5276

CMP Sensor Signal - Intake Bank 2

54

GY

2701

5-Volt Reference C

55

D-GN

485

TP Sensor Signal 1

56

OG/BK

5266

BARO Sensor Signal

57

GY

705

5-Volt Reference B

58

L-BU

2123

IC 3 Control

59

PU/WH

5024

CKP Sensor 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

  • OEM: 1928403386
  • Service: 88956567
  • Description: 64-Way F Bosch (BK)

Terminal Part Information

  • Pins: 1, 2, 3, 17, 18, 25, 26, 33, 39, 4, 5, 7, 8, 9, 10, 11, 12, 15, 19, 20, 22, 23, 24, 27, 29, 31, 32, 34, 35, 36, 37, 40, 41, 42, 43, 44, 47, 48, 49, 50, 55, 56, 57, 58, 59, 60, 61, 63
  • Terminal/Tray: 1928498016/17
  • Core/Insulation Crimp: Pins 1, 2, 3, 17, 18, 25, 26, 33, 39 - See Terminal Repair Kit
  • Core/Insulation Crimp: Pins 4, 5, 7, 8, 9, 10, 11, 12, 15, 19, 20, 22, 23, 24, 27, 29, 31, 32, 34, 35, 36, 37, 40, 41, 42, 43, 44, 47, 48, 49, 50, 55, 56, 57, 58, 59, 60, 61, 63 - N/N
  • Release Tool/Test Probe: J-38125-560/J-35616-64B (L-BU)

Engine Control Module (ECM) C2

Pin

Wire Color

Circuit No.

Function

1

PK/BK

5290

Ignition 1 Voltage

2

GY/WH

3122

HO2S Heater Low Control - Bank 1 Sensor 2

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 A

8

PU

1272

Low Reference

9

OG/BK

380

A/C Refrigerant Pressure Sensor Signal

10

OG

5371

BAS Relay Coil Supply Voltage

11

TN

472

IAT Sensor Signal

12

D-GN

890

Fuel Tank Pressure Sensor Signal

13-14

--

--

Not Used

15

OG/BK

463

Requested Torque Signal

16

--

--

Not Used

17

PK/BK

5290

Ignition 1 Voltage

18

OG/WH

3223

HO2S Heater Low Control - Bank 2 Sensor 2

19

D-GN/WH

465

Fuel Pump Relay Control

20

D-GN

335

Low Speed Cooling Fan Relay Control

21

--

--

Not Used

22

BN

818

Vehicle Speed Signal

23

TN/BK

2500

High Speed GMLAN Serial Data Bus+ (M82)

24

BN

5069

MAIN Relay Control

25

TN

452

Low Reference

26

TN

2760

Low Reference

27

L-BU

1937

Fuel Level Sensor Signal - Secondary

28

--

--

Not Used

29

PU/WH

1668

HO2S Signal - Bank 1 Sensor 2

30

--

--

Not Used

31

YE

5

Crank Voltage

32

OG/BK

1786

Park/Neutral Signal (M82)

33

WH

1310

EVAP Canister Vent Solenoid Control

34

PK/WH

1101

Damping Lift/Dive Signal (F55)

35

YE

447

Starter Relay Coil Control

36

RD/WH

1440

Battery Positive Voltage

37

TN/BK

464

Delivered Torque Signal

38

--

--

Not Used

39

GY

596

5-Volt Reference A

40

BN

1271

Low Reference

41

TN

1671

HO2S Low Referene - Bank 2 Sensor 2

42

D-BU

1936

Fuel Level Sensor Signal - Primary

43

YE

492

MAF Sensor Signal

44

L-BU

1162

APP Sensor 2 Signal

45-46

--

--

Not Used

47

YE/BK

5270

Traction Control Data Signal

48

PU

1807

Class 2 Serial Data

49

D-GN/WH

459

A/C Compressor Clutch Relay Control

50

BN/WH

419

MIL Control

51-54

--

--

Not Used

55

TN

2501

High Speed GMLAN Serial Data Bus- (M82)

56

TN

1274

5-Volt Reference C

57

TN/WH

1669

HO2S Low Reference - Bank 1 Sensor 2

58

YE

343

Accessory Voltage

59

GY

1884

Cruise Control Switch Signal

60

D-BU

1161

APP Sensor Signal 1

61

PU

1670

HO2S Signal - Bank 2 Sensor 2

62

--

--

Not Used

63

GY

847

Extended Travel Brake Switch Signal

64

--

--

Not Used