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: 1544242  Size: CH

Connector Part Information

  • OEM: 15438366
  • Service: See Catalog
  • Description: 96-Way 1.2 F Sealed (BK)

Terminal Part Information

  • 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

--

--

Not Used

2

BK/WH

351

Ground

3

BK/WH

351

Ground

4

BK/WH

351

Ground

5

BK/WH

351

Ground

6

--

--

Not Used

7

BN

1271

Low Reference

8

PU

1272

Low Reference

9

GY

1273

Low Reference

10

YE/BK

7607

Remote PTO Acceleration Ground

11

BK

470

Low Reference

12

--

--

Not Used

13

BK

407

Low Reference

14-16

--

--

Not Used

17

YE

2361

SAE J1939 Serial Data Bus+

18

D-GN

2362

SAE J1939 Serial Data Bus-

19

PK

6118

Intake Manifold Temperature Signal

20

D-GN

1049

ECM Class 2 Serial Data A

21

--

--

Not Used

22

PK

1020

Ignition 0 Voltage

23

PK

439

Ignition 1 Voltage

24

--

--

Not Used

25

BN/WH

419

MIL Control

26

BK/WH

351

Ground

27

BK/WH

351

Ground

28

WH

121

Engine Speed Signal

29

D-BU

5277

Exhaust Temperature Sensor 1 Signal

30

L-BU

5377

Exhaust Temperature Sensor 2 Signal

31

D-BU

1161

APP Sensor 1 Signal

32

L-BU

1162

APP Sensor 2 Signal

33

D-GN

1163

APP Sensor 3 Signal

34

D-GN

7637

Remote PTO Acceleration Signal

35

--

--

Not Used

36

PU

950

Diesel Particulate Filter Pressure Signal

37

PU

1589

Fuel Level Signal - Primary

38

D-BU

1936

Fuel Level Signal - Secondary

39

L-BU

2221

Signal High - Rear (w/o MD Transmission)

40

D-GN

2222

Signal Low - Rear (Manual Transmission)

41

GY

23

Generator Field Duty Cycle Signal

42

--

--

Not Used

43

GY/BK

1467

Shift Motor Relay - Control

44

--

--

Not Used

45

D-GN/WH

459

A/C Compressor Clutch Relay Control

46

GY

397

Cruise Control On Switch Signal

47

GY/BK

87

Cruise Control Resume/Accel Switch Signal

48

D-BU

84

Cruise Control Set/Coast Switch Signal

49

BK/WH

1120

Ignition 1 Voltage

50

BK/WH

1120

Ignition 1 Voltage

51

OG

440

Battery Positive Voltage

52

L-BU

1121

ECM Power Enable Signal

53

L-BU

1121

ECM Power Enable Signal

54

WH/BK

1164

5-Volt Reference

55

TN

1274

5-Volt Reference

56

YE/BK

1275

5-Volt Reference

57

PK

705

5-Volt Reference

58

GY

7606

Remote PTO Acceleration VCC

59

YE

505

Glow Plug Relay Control

60

WH/PU

953

Throttle Sensor Signal

61

BN

25

Charge Indicator Control/Charge Indicator Signal

62

L-BU

1320

Stop Lamp Switch Signal

63

PU

420

TCC Brake Switch/Cruise Control Release Signal

64

BN/WH

379

CPP Switch Signal (Manual Transmission)

65

--

--

Not Used

66

L-GN

1478

Coolant Level Switch Signal

67

L-GN

2081

Exhaust Brake Request Signal (K40/NPE)

68

D-GN

534

High Idle Switch Signal

69-71

--

--

Not Used

72

YE/BK

508

Water In Fuel Indicator Control

73

BK/WH

1120

Ignition 1 Voltage

74

--

--

Not Used

75

PU

2562

PTO Control

76

YE

447

Starter Relay Coil Control

77

BK/WH

1962

Exhaust Brake Indicator Signal

78

RD

2013

High Idle Indicator Control

79

D-BU

507

Wait to Start Indicator Control

80-81

--

--

Not Used

82

D-GN/WH

817

Vehicle Speed Signal

83

YE/BK

1827

Vehicle Speed Signal

84-85

--

--

Not Used

86

L-BU

7605

Remote PTO Ignore Brake Clutch Switch

87

L-GN

24

Backup Lamp Supply Voltage

88

PU

7608

Remote PTO Control Disable Switch

89

D-BU

7610

Remote PTO Set Speed A Switch

90

WH/BK

7609

Remote PTO Set Speed B Switch

91

PU

7612

Resume PTO Set Switch

92

BN

7611

Resume PTO Resume Switch

93

L-GN

488

PTO On Switch-Signal

94

L-BU

494

PTO Engine Kill Signal

95

YE

2522

PTO Engage Signal

96

D-GN

1433

PNP/Clutch Start Switch Signal (Manual Transmission)

PU

806

Crank Voltage (Automatic Transmission)

Engine Control Module (ECM) C2


Object Number: 1826273  Size: CH

Connector Part Information

  • OEM: 1 928 404 780
  • Service: See Catalog
  • Description: 58-Way F 2.8 Series Bosch (BK)

Terminal Part Information

  • 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) C2

Pin

Wire Color

Circuit No.

Function

1

WH/BK

CF139

Intake Throttle Motor Low

2

D-BU/BK

CF138

Intake Throttle Motor High

3

BK

DF28

Turbocharger Vane Position Solenoid Control

4

RD

CF196

Exhaust Gas Recirculation Temperature Sensor 2 Signal

5

WH

CF71

Injector Positive Voltage Control 1

6

RD

CF79

Injector Positive Voltage Control 2

7

BK/WH

DF35

EGR Motor U Supply Voltage

8

D-GN

DF33

EGR Motor V Supply Voltage

9

RD/YE

DF31

EGR Motor W Supply Voltage

10

--

--

Not Used

11

BK

CF151

Low Reference

12

BK

CF56

Low Reference

13

BK

CF66

Low Reference

14

BK

CF70

Low Reference

15

BK

DF21

Low Reference

16

BK

CF137

Low Reference

17

BK

DF30

Low Reference

18

BK

CF165

Low Reference

19

BK

CF158

Low Reference

20

RD

CF40

SCV Low Signal

21

RD

CF41

SCV Low Signal

22

D-GN

CF95

Oil Level Switch Signal

23

--

--

Not Used

24

WH

CF51

MAP Sensor Signal

25

WH

CF60

Fuel Pressure Sensor Signal

26

WH

CF62

Fuel Pressure Sensor Signal

27

GY

CF69

Oil Pressure Sensor Signal

28

WH

DF16

MAF Sensor Signal

29

BK/YE

CF136

Intake Position Signal

30

WH

CF162

CMP Sensor Low

31

WH

CF155

CKP Sensor High

32

RD

CF154

5-Volt Reference

33

WH

CF38

SCV High Signal

34

WH

CF39

SCV High Signal

35

D-BU/WH

CF87

ECT Sensor Signal

36

BK

IC01

Low Reference

37

D-GN/WH

DF13

IAT Sensor Signal

38

D-BU/RD

DF36

EGR Motor Position U Signal

39

WH/RD

DF34

EGR Motor Position V Signal

40

YE/RD

DF32

EGR Motor Position W Signal

41

YE

CF89

Fuel Temperature Sensor Signal

42

RD

CF91

Exhaust Gas Recilkulation Temperature sensor 1 Signal

43

RD

CF83

Fuel Injector D Control

44

BK

CF85

Fuel Injector F Control

45

BK/RD

CF81

Fuel Injector B Control

46

RD

CF50

5-Volt Reference

47

RD

CF59

5-Volt Reference

48

WH

CF68

5-Volt Reference

49

WH

DF37

5-Volt Reference

50

WH

CF135

5-Volt Reference

51

RD

CF161

5-Volt Reference

52

--

--

Not Used

53

WH

CF148

TVP Sensor Signal

54

RD

CF147

5-Volt Reference

55

--

--

Not Used

56

WH

CF75

Fuel Injector C Control

57

D-BU

CF77

Fuel Injector E Control

58

YE

CF73

Fuel Injector A Control