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 Unknown (BK)

Terminal Part Information

  • Pins: 1, 2, 3, 4, 5, 6, 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

KS Low Reference Bank 2

2

OG

5280

Heated Oxygen Sensor Input Pump Current Bank 2 Sensor (1)

3

L-GN

5278

Heated Oxygen Sensor Input Pump Current Bank 1 Sensor (1)

4

OG

5275

Camshaft Position Intake Sensor (1)

5

GY

605

Reference Voltage Feed - 5-Volt Reference

6

YE

7017

Variable Intake Manifold Position Signal

7

TN

470

Low Reference

8

PU

486

Throttle Position Sensor Signal 2

9

D-GN/WH

2124

IC 4 Control

10

WH/BK

5039

Engine Speed Sensor High

11

--

--

Not Used

12

OG/BK

5272

Camshaft Phaser Intake Solenoid (2)

13

L-GN

5282

Camshaft Phaser Exhaust Solenoid (1)

14

--

--

Not Used

15

BN

582

Throttle Motor Feed - Close

16

GY/WH

3113

Heated Oxygen Sensor Heater Low Control Bank 1 Sensor (1)

17

GY

1716

Knock Sensor Return

18

TN

1667

Oxygen Sensor Return - Right - Forward of Catalytic Converter

19

PU/WH

1665

Oxygen Sensor Signal - Left - Forward of Catalytic Converter

20

D-GN

5273

Camshaft Position Exhaust Sensor (1)

21

GY

23

Alternator Field Duty Cycle Signal

22

--

--

Not Used

23

YE

410

Coolant Temperature 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

PU

5284

Camshaft Phaser Intake Solenoid (1)

30

WH/BK

5283

Camshaft Phaser Exhaust Solenoid (2)

31

YE

581

Throttle Motor Feed - Open

32

L-GN

3212

Heated Oxygen Sensor Heater Low Control Bank 2 Sensor (1)

33

D-BU

496

Knock Sensor Signal 1

34

PU

1666

Oxygen Sensor Signal - Right - Forward of Catalytic Converter

35

WH

5279

Heated Oxygen Sensor Pump Current Bank 1 Sensor (1)

36

PU

5274

Camshaft Position Exhaust Sensor (2)

37-38

--

--

Not Used

39

TN

2752

Sensor Return - Throttle Position Sensor

40

TN/BK

231

Oil Pressure Switch Signal

41

D-GN

2125

IC 5 Control

42

PU

2121

IC 1 Control

43

OG

225

Alternator Output - Regulator Reference Voltage

44

L-BU/BK

5041

Intake Manifold Control (1)

45

L-BU/BK

844

Fuel Injector 4 Output

46

PK/BK

1746

Fuel Injector 3 Output

47

TN/WH

845

Fuel Injector 5 Output

48

L-GN/WH

428

EVAP Canister Purge Solenoid Control

49

GY/BK

1798

Return

50

L-BU

1876

Knock Sensor Signal 2

51

PU/WH

5281

Heated Oxygen Sensor Pump Current Bank 2 Sensor (1)

52

TN

1664

HO2S Heated Oxygen Low Signal (Bank 1 Sensor 1)

53

YE

5276

Camshaft Position Intake Sensor (2)

54

GY

2701

Reference Voltage Feed - 5-Volt Ref - Throttle Position Sensor

55

D-GN

485

Throttle Position Sensor Signal 1

56

OG/BK

5266

Ambient Air Pressure Sensor Signal

57

GY

705

Reference Voltage Feed - 5-Volt Reference

58

L-BU

2123

IC 3 Control

59

PU/WH

5024

Engine Speed Sensor Low

60-61

--

--

Not Used

62

L-GN/BK

1745

Fuel Injector 2 Output

63

TN

1744

Fuel Injector 1 Output

64

YE/BK

846

Fuel Injector 6 Output

Engine Control Module (ECM) C2


Object Number: 1331455  Size: CH

Connector Part Information

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

Terminal Part Information

  • Pins: 1, 2, 3, 17, 18, 33, 39, 4, 7, 8, 9, 10, 11, 12, 19, 20, 22, 23, 24, 25, 26, 27, 29, 32, 35, 36, 40, 41, 42, 43, 44, 49, 50, 55, 56, 57, 58, 60, 61
  • Terminal/Tray: 1928498016/17
  • Core/Insulation Crimp: Pins 1, 2, 3, 17, 18, 33, 39 - See Terminal Repair Kit
  • Core/Insulation Crimp: Pins 4, 7, 8, 9, 10, 11, 12, 19, 20, 22, 23, 24, 25, 26, 27, 29, 32, 35, 36, 40, 41, 42, 43, 44, 49, 50, 55, 56, 57, 58, 60, 61 - 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

Engine Main Relay Fused Control (1)

2

BK/WH

3122

Oxygen Sensor Heater Control Low - Front

3

PK

239

Run/Crank Ignition 1 Voltage

4

D-BU

473

High Speed Cooling Fan Relay Control

5-6

--

--

Not Used

7

WH/BK

1164

Electronic Throttle - Pedal Position 5-Volt Ref 1

8

PU

1272

Electronic Throttle - Pedal Position 2

9

OG/BK

380

Air Conditioning Refrigerant Pressure Sensor Signal

10

WH

17

Stop Lamp Switch Signal

11

TN

472

Manifold Absolute Temperature Sensor Signal

12

D-GN

890

Fuel Tank Pressure Sensor Signal

13-16

--

--

Not Used

17

PK/BK

5290

Engine Main Relay Fused Control (1)

18

RD/WH

3223

Oxygen Sensor Signal - Bank 2 Sensor 2 Heater Control Low

19

D-GN/WH

465

Fuel Pump Primary 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 (+) (1)

24

BN

5069

Engine Main Relay Coil Control

25

BK

452

Sensor Return

26

BK

2760

Sensor Return - Induction Air Temperature

27

L-BU

1937

Fuel Gage Sensor Signal - Right

28

--

--

Not Used

29

PU/WH

1668

Heated Oxygen Sensor High Signal Bank 1 Sensor (2)

30-31

--

--

Not Used

32

OG/BK

1786

Transmission Park/Neutral Signal

33

WH

1310

Canister Vent Valve Solenoid Output

34

--

--

Not Used

35

YE

447

Starter Relay Coil Control

36

RD/WH

1440

Battery Positive Voltage

37-38

--

--

Not Used

39

GY

596

Reference Voltage Feed - 5-Volt Reference

40

BN

1271

Electronic Throttle - Pedal Position Return 1

41

TN

1671

Heated Oxygen Sensor Low Signal Bank 2 Sensor (2)

42

D-BU

1936

Fuel Gage Sensor Signal - Left

43

YE

492

Mass Air Flow Signal

44

L-BU

1162

Electronic Throttle - Pedal Position Signal 2

45-48

--

--

Not Used

49

D-GN/WH

459

A/C Compressor Clutch Relay Control

50

BN/WH

419

Check Engine Indicator Lamp Output

51-54

--

--

Not Used

55

TN

2501

High Speed GMLAN Serial Data (-) (1)

56

TN

1274

Electronic Throttle - Pedal Position 5-Volt Ref 2

57

TN/WH

1669

Oxygen Sensor Return - Left - Rear of Catalytic Converter

58

YE/BK

5728

ECM/TCM Serial Data Wake Up

59

--

--

Not Used

60

D-BU

1161

Electronic Throttle - Pedal Position Signal 1

61

PU

1670

Heated Oxygen Sensor High Signal Bank 2 Sensor (2)

62-64

--

--

Not Used