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: 1331455  Size: CH

Connector Part Information

    • OEM: 1928403513
    •  64-Way F Unknown (BK)

Pin

Wire Color

Circuit No.

Function

1

TN

407

KS Low Reference Bank 2

2

OG

5278

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

3

L-GN

5280

Heated Oxygen Sensor Input Pump Current Bank 2 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

Electronic Spark Timing Signal Cylinder 4

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

5037

Heated Oxygen Sensor Heater High Control Bank 2 Sensor (2)

17

GY

1716

Knock Sensor Return

18

TN

1653

Oxygen Sensor Return - Left - Forward of Catalytic Converter

19

PU/WH

1666

Oxygen Sensor Signal - Right - 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

Electronic Spark Timing Signal Cylinder 6

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

5038

Heated Oxygen Sensor Heater High Control Bank 1 Sensor (3)

33

D-BU

496

Knock Sensor Signal 1

34

PU

1665

Oxygen Sensor Signal - Left - Forward of Catalytic Converter

35

WH

5281

Heated Oxygen Sensor Pump Current Bank 2 Sensor (1)

36

PU

5274

Camshaft Position Exhaust Sensor (2)

37

BN

1174

Oil Level Sensor Signal

38

D-GN/WH

357

Oil Temperature Sensor Signal

39

TN

2752

Sensor Return - Throttle Position Sensor

40

TN/BK

231

Oil Pressure Switch Signal

41

D-GN

2125

Electronic Spark Timing Signal Cylinder 5

42

PU

2121

Electronic Spark Timing Signal Cylinder 1

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

5279

Heated Oxygen Sensor Pump Current Bank 1 Sensor (1)

52

TN

1667

Oxygen Sensor Return - Right - Forward of Catalytic Converter

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

Electronic Spark Timing Signal Cylinder 3

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: 1331454  Size: CH

Connector Part Information

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

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

RD/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