GM Service Manual Online
For 1990-2009 cars only

Engine Control Module Connector End Views W/O CTF

Table 1: Engine Control Module (ECM) C1
Table 2: Engine Control Module (ECM) C2
Table 3: Engine Control Module (ECM) C3
Table 4: Engine Control Module (ECM) C4
Table 5: Engine Control Module (ECM) C5

Engine Control Module (ECM) C1


Object Number: 854605  Size: CH

Connector Part Information

    • 353031-1
    • 31-Way F AMP (WH)

Pin

Wire Color

Circuit No.

Function

1

OG

4

Battery Positive Voltage

2

YE/BK

130

Fuel Injector 4 Control

3

BK/WH

125

Fuel Injector 2 Control

4

L-BU

129

Fuel Injector 6 Control

5

PK/BK

124

Fuel Injector 3 Control

6

D-GN/BK

128

Fuel Injector 5 Control

7

BK

123

Fuel Injector 1 Control

8

D-GN/WH

61

A/C Compressor Clutch Relay Control

9

PK

5

Ignition 1 Voltage

10

PK

19

Ignition 2 Voltage

11

--

--

Not Used

12

YE/BK

138

Fuel Injector 4 Control

13

YE

182

Starter Relay Coil Control

14

BK/WH

135

Fuel Injector 2 Control

15

L-BU

137

Fuel Injector 6 Control

16

PK/BK

134

Fuel Injector 3 Control

17

D-GN/BK

136

Fuel Injector 5 Control

18

BK

133

Fuel Injector 1 Control

19

BN

35

Air Heater Relay Control

20

D-BU

121

Fuel Injector Supply Voltage 1

21

D-BU

122

Fuel Injector Supply Voltage 1

22

GY

87

Ground

23

--

--

Not Used

24

PU

69

PTO Control

25

YE

82

Glow Plug Relay Control

26

D-BU

42

Wait to Start Indicator Control

27

D-BU

17

ECM Power Enable Signal

28

D-BU

18

ECM Power Enable Signal

29

--

--

Not Used

30

D-GN

126

Fuel Injector Supply Voltage 2

31

D-GN

127

Fuel Injector Supply Voltage 2

Engine Control Module (ECM) C2


Object Number: 854606  Size: CH

Connector Part Information

    • 353029-1
    • 24-Way F AMP (WH)

Pin

Wire Color

Circuit No.

Function

1

BK/WH

164

Ground

2

BK/WH

170

Ground

3

BK/WH

167

Ground

4

RD/WH

15

Ignition 1 Voltage

5

RD/WH

16

Ignition 1 Voltage

6

L-GN

181

Reverse Switch Signal

7

--

--

Not Used

8

BK/WH

165

Ground

9

BK/WH

166

Ground

10

GY/BK

66

Cruise Control Resume/Accel Switch Signal

11

PU

62

Exhaust Brake Relay Control

12

BN/WH

41

MIL Control

13

--

--

Not Used

14

GY

67

Cruise Control On Switch Signal

15

PU

20

PNP/Clutch Start Switch Signal

16

RD

46

High Idle Indicator Control

17

BK/WH

168

Ground

18

BK/WH

169

Ground

19

D-BU

65

Cruise Control Set/Coast Switch Signal

20

--

--

Not Used

21

BN/WH

47

CPP Switch Signal

22

WH

43

Engine Speed Signal

23

GY/BK

81

Shift - Signal

24

D-GN

45

High Idle Switch Signal

Engine Control Module (ECM) C3


Object Number: 854607  Size: CH

Connector Part Information

    • 353027-1
    •  17-Way F AMP (WH)

Pin

Wire Color

Circuit No.

Function

1

BN

184

Charge Indicator Control

2-3

--

--

Not Used

4

D-GN

52

ECM Class 2 Serial Data A

5

--

--

Not Used

6

BN

145

Oil Level Switch Signal

7

L-GN

161

Low Coolant Level Indicator Control

8

L-BU

162

PTO Engine Kill Signal

9

WH

48

Exhaust Brake Request Signal

10

D-GN/WH

44

Vehicle Speed Signal

11

YE/BK

83

Vehicle Speed Signal

12

--

--

Not Used

13

YE

70

PTO Status Signal

14

L-GN

68

PTO On Switch - Signal

15

--

--

Not Used

16

WH

64

Stop Lamp Switch Signal

17

L-BU

63

Stop Lamp Switch Signal

Engine Control Module (ECM) C4


Object Number: 854608  Size: CH

Connector Part Information

    • 353030-1
    • 28-Way F AMP (WH)

Pin

Wire Color

Circuit No.

Function

1

D-GN

107

CMP Sensor Low

2

BN/WH

24

5-Volt Reference

3

YE/BK

28

5-Volt Reference

4

WH/D-BU

49

CAN High

5

WH

109

5-Volt Reference

6

WH

113

5-Volt Reference

7

GY

151

5-Volt Reference

8

RD

96

Fuel Pressure Sensor 1 Signal

9

--

--

Not Used

10

RD

106

CMP Sensor High

11

PU

22

Low Reference

12

GY

21

Low Reference

13

BK/D-BU

50

CAN Low

14

--

--

Not Used

15

GY

94

Low Reference

16

GY

98

Low Reference

17

BK

153

Low Reference

18

--

--

Not Used

19

RD

97

Fuel Pressure 2 Sensor Signal

20

GY/RD

92

Drain Wire

21

L-BU

23

APP Sensor 2 Signal

22

D-GN

29

APP Sensor 3 Signal

23

YE

142

Fuel Temperature Sensor Signal

24

BK

144

Low Reference

25-26

--

--

Not Used

27

RD

110

MAP Sensor Signal

28

D-GN

141

ECT Sensor Signal

Engine Control Module (ECM) C5


Object Number: 854609  Size: CH

Connector Part Information

    • 353028-1
    • 22-Way F AMP (WH)

Pin

Wire Color

Circuit No.

Function

1

BN/WH

101

Pressure Control Valve 1 Control

2-3

--

--

Not Used

4

WH

103

CKP Sensor High

5

PU

146

Fuel Level Sensor Signal - Primary

6

D-BU

147

Fuel Level Sensor Signal - Secondary

7

WH/BK

27

5-Volt Reference

8

D-BU

102

Pressure Control Valve 2 Control

9

--

--

Not Used

10

BK

104

CKP Sensor Low

11

WH

84

VSS High Signal

12

BK

85

VSS Low Signal (M/T)

13

--

--

Not Used

14

D-GN/WH

143

IAT Sensor Signal

15

--

--

Not Used

16

GY

90

Drain Wire

17

BN/WH

152

Oil Pressure Sensor Signal

18-19

--

--

Not Used

20

GY

183

Generator Field Duty Cycle Signal

21

D-BU

26

APP Sensor 1 Signal

22

BN

25

Low Reference

Engine Control Module Connector End Views CTF

Table 1: Engine Control Module (ECM) C1
Table 2: Engine Control Module (ECM) C2

Engine Control Module (ECM) C1


Object Number: 1339820  Size: CF

Connector Part Information

    • 1 928 404 781
    • 96-Way F Bosch (BK)

Pin

Wire Color

Circuit No.

Function

1

BK

CU15

Ground

2

BK

CU09

Ground

3

BK

CU10

Ground

4

BK

CU13

Ground

5

BK

CU14

Ground

6

--

--

Not Used

7

TN

CF13

Low Reference

8

VT

CF16

Low Reference

9

RD

CF19

Low Reference

10

L-BU/YE

DF24

Low Reference

11

--

--

Not Used

12

BK/YE

CF96

Low Reference

13

--

--

Not Used

14

GY

OA19

Ground (Allison® LCT)

BK/YE

DF41

Drain Wire (Manual Transmission)

15

--

--

Not Used

16

TN

CF10

Shield

17

WH/RD

CF36

SAE J1939 Serial Data Bus+

18

L-GN/RD

CF37

SAE J1939 Serial Data Bus-

19

--

--

Not Used

20

D-GN

CF34

ECM Class 2 Serial Data A

21

--

--

Not Used

22

PK

DF55

Ignition 0 Voltage

23

PK

CF10

Ignition 1 Voltage

24-25

--

--

Not Used

26

BK

CU11

Ground

27

BK

CU12

Ground

28

WH

CF22

Engine Speed Signal

29-30

--

--

Not Used

31

L-BU

CF12

APP Sensor 1 Signal

32

L-GN

CF15

APP Sensor 2 Signal

33

D-GN

CF18

APP Sensor 3 Signal

34

L-BU/RD

DF23

PTO Accel Switch Signal

35-36

--

--

Not Used

37

VT

CF97

Fuel Level Signal - Primary

38

L-BU

CF99

Fuel Level Signal - Secondary

39

WH

OA16

VSS High Signal (Allison® LCT)

WH

DF38

Signal High - Rear (Manual Transmission)

--

--

Not Used (Allison® MD)

40

BK

DF39

Signal Low - Rear (Manual Transmission)

--

--

Not Used (Automatic Transmission)

41

RD/BK

DF59

Generator Field Duty Cycle Signal

42

--

--

Not Used

43

RD/D-BU

DF56

Shift Motor Relay - Control (HPZ)

--

--

Not Used (w/o HPZ)

44-45

--

--

Not Used

46

RD/BK

DF50

Cruise Control On Switch Signal

47

RD

DF48

Cruise Control Resume/Accel Switch Signal

48

L-BU

DF47

Cruise Control Set/Coast Switch Signal

49

BK

CF04

Ignition 1 Voltage

50

BK/RD

CF05

Ignition 1 Voltage

51

L-BU/OG

CF08

Battery Positive Voltage

52

WH

CF06

ECM Power Enable Signal

53

WH

CF07

ECM Power Enable Signal

54

WH/BK

CF11

5-Volt Reference

55

BK/WH

CF14

5-Volt Reference

56

YE/BK

CF17

5-Volt Reference

57

--

--

Not Used

58

L-BU/WH

DF22

5-Volt Reference

59-60

--

--

Not Used

61

RD

DF60

Charge Indicator Control

62

WH

DF43

Stop Lamp Switch Signal (JE3)

WH

DF46

Stop Lamp Switch Signal (JE4)

63

RD/D-BU

DF45

TCC Brake Switch/Cruise Control Release Signal

64

BK/OG

CF29

CPP Switch Signal (Manual Transmission)

--

--

Not Used (Automatic Transmission)

65-66

--

--

Not Used

67

WH

CF32

Exhaust Brake Request Signal

68

D-GN

CF24

High Idle Switch Signal

69

--

--

Not Used

70

L-GN

DF61

Coolant Level Switch Signal

71

L-GN

BA03

Backup Lamp Supply Voltage

72-73

--

--

Not Used

74

YE

HB04

Glow Plug Relay Control

75

VT

WB05

PTO Control

76

YE

DF58

Starter Relay Coil Control

77

VT

DF44

Exhaust Brake Relay Control

78

RD

CF26

High Idle Indicator Control

79

L-BU

CF21

Wait to Start Indicator Control

80

BK/WH

CF20

MIL Control

81

D-GN/WH

CF23

Vehicle Speed Signal

82

WH/BK

DF57

Vehicle Speed Signal

83-85

--

--

Not Used

86

WH/BK

DF01

Brake/Clutch Switch Override Signal

87

--

--

Not Used

88

RD/BK

DF02

PTO Disable Switch - Signal - Cab

89

BK/WH

DF04

PTO Set Switch Signal A

90

D-GN/WH

DF03

PTO Set Switch Signal B

91

BK/YE

DF05

PTO Set Switch Signal - Remote

92

WH/RD

DF06

PTO Resume Switch Signal - Remote

93

L-GN

WB09

PTO On Switch-Signal

94

L-GN

WB12

PTO Engine Kill Signal

95

L-BU/RD

WB11

PTO Engage Signal

96

YE

CF35

PNP/Clutch Start Switch Signal

Engine Control Module (ECM) C2


Object Number: 1360604  Size: CH

Connector Part Information

    • 1 928 404 752
    • 58-Way F Bosch (BK)

Pin

Wire Color

Circuit No.

Function

1

BK

B1

Turbocharger Vane Position Control Solenoid Valve High Control

2

--

--

Not Used

3

WH

B3

Fuel Injector Supply Voltage 1

4

RD

B4

Fuel Injector Supply Voltage 2

5

WH

B5

Fuel Injector Supply Voltage 1

6

RD

B6

Fuel Injector Supply Voltage 2

7

BK/WH

B7

EGR Motor U Supply Voltage

8

L-GN

B8

EGR Motor V Supply Voltage

9

RD/YE

B9

EGR Motor W Supply Voltage

10

--

--

Not Used

11

BK

B11

Not Used

12

BK

B12A

Low Reference

13

BK

B13A

Low Reference

14

BK/YE

B14

Low Reference

15

GY

B15A

Low Reference

16

BK

B16A

Low Reference

17

WH/BK

B17

Ground

18

BK

B18A

Drain Wire

19

GY

B19

Drain Wire

20

RD

B20

SCV Low Signal

21

RD

B21

SCV Low Signal

22

--

--

Not Used

23

RD

B23

Not Used

24

WH

B24

MAP Sensor Signal

25

WH

B25A

Fuel Pressure Sensor Signal

26

WH

B26

Fuel Pressure Sensor Signal

27

GY

B27

Oil Pressure Sensor Signal

28

WH

B28

MAF Sensor Signal

29

WH

B29

Turbocharger Vane Position Signal

30

WH

B30

CMP Sensor Low

31

WH

B31

CKP Sensor High

32

BK

B32

CKP Sensor Low

33

WH

B33

SCV High Signal

34

WH

B34

SCV High Signal

35

D-BU/WH

B35

ECT Sensor Signal

36

--

--

Not Used

37

L-GN/WH

B37

IAT Sensor Signal

38

D-BU/RD

B38

EGR Motor Position U Signal

39

WH/RD

B39

EGR Motor Position V Signal

40

YE/RD

B40

EGR Motor Position W Signal

41

YE

B41

Fuel Temperature Sensor Signal

42

RD

B42

Low Reference

43

RD

B43

Fuel Injector 6 Control

44

BK

B44

Fuel Injector 4 Control

45

BK/RD

B45

Fuel Injector 5 Control

46

RD

B46

5-Volt Reference

47

RD

B47

5-Volt Reference

48

WH

B48

5-Volt Reference

49

WH

B49

5-Volt Reference

50

RD

B50

5-Volt Reference

51

RD

B51

5-Volt Reference

52

L-GN

B52

Oil Level Switch Signal

53-55

--

--

Not Used

56

WH

B56

Fuel Injector 3 Control

57

L-BU

B57

Fuel Injector 2 Control

58

YE

B58

Fuel Injector 1 Control