GM Service Manual Online
For 1990-2009 cars only

Engine Control Module (ECM) - Sirius D4


Object Number: 1500001  Size: CF

Connector Part Information

    • FC1
    • 90-Way Connector (BK)

Pin

Wire Color

Circuit No.

Function

1-2

--

--

Not Used

3

BK/WH

51

Ground

4

--

--

Not Used

5

D-BU

436

Exhaust Gas Recirculation (EGR) Valve Control

6

YE/D-BU

497

Fuel Pump Relay Control

7

BN

1741

Ignition 3 Voltage

8

WH

135

Engine Coolant Temperature (ECT) Gage Control

9

D-BU

473

High Speed Cooling Fan Relay Control

10

D-GN

335

Low Speed Cooling Fan Relay Control

11

BK

51

Ground

12

D-BU/WH

1876

Low Reference

13

BK

808

Low Reference

14

PU

1670

Heated Oxygen Sensor (HO2S) 2 Low Reference

15

--

--

Not Used

16

L-BU

733

Heated Oxygen Sensor (HO2S) 2 Heater Control

17

L-BU/BK

1748

Camshaft Position (CMP) Sensor Signal

18

--

--

Not Used

19

BK

808

Low Reference

20

BN/OG

380

A/C Pressure Sensor Signal

21

GY

1936

Fuel Level Sensor Signal

22

L-GN/WH

1749

Low Reference

23

WH/BK

448

Serial Data

24

BK/WH

51

Ground

25

BK/WH

51

Ground

26

--

--

Not Used

27

BN

1456

Exhaust Gas Recirculation (EGR) Valve Position Sensor Signal

28

BK/WH

51

Ground

29

PK

1739

Ignition 1 Voltage

30

OG

440

Battery Positive Voltage

31

WH

423

Ignition Coil and 2 and 3 Control

32

OG

406

Ignition Coil and 1 and 4 Control

33

BK/WH

51

Ground

34

--

--

Not Used

35

BN/WH

50

Heated Oxygen Sensor (HO2S) 1 Signal

36-38

--

--

Not Used

39

PU/WH

1035

Malfunction Indicator Lamp (MIL) Control

40

WH

30

Fuel Gage Control

41

D-GN

67

A/C Clutch Relay Control

42

YE/BK

496

Knock Sensor (KS) Signal

43

L-GN/WH

534

Idle Motor Position Signal

44

D-GN/WH

428

Heated Oxygen Sensor (HO2S) 1 Low Reference

45

D-GN

435

Exhaust Gas Recirculation (EGR) Valve Control

46

L-BU

1937

Low Reference

47-48

--

--

Not Used

49

D-BU

732

Evaporator Temperature Sensor Signal

50

L-BU/WH

432

Manifold Absolute Pressure (MAP) Sensor Signal

51

D-GN

817

Vehicle Speed Signal

52

D-GN/WH

762

A/C Request Signal

53

L-BU

832

Rough Road Signal w/ABS

53

D-GN

872

Rough Road Signal w/o ABS

54

BK/WH

1869

Crankshaft Position (CKP) Sensor Signal

55

PU

427

Idle Switch Position Signal

56

PU

2000

Serial Data

57

YE

710

CAN Serial Data Low

58

--

--

Not Used

59

BN/BK

1747

Fuel Injector 1 Control

60

BN/WH

1745

Fuel Injector 3 Control

61

WH/BN

425

Idle Speed Motor Return

62

D-BU

426

Idle Speed Motor Feed

63

--

--

Not Used

64

PU

1671

Heated Oxygen Sensor (HO2S) 2 Signal

65

BK

452

EVAP Canister Purge Valve Solenoid Control

66

BN

1541

Ignition 3 Voltage

67

BK/WH

51

Ground

68

GY

121

Engine Speed Signal

69-73

--

--

Not Used

74

L-GN

417

Throttle Position (TP) Sensor Signal

75

GY/BK

433

Manifold Absolute Pressure (MAP) Sensor Signal

76

L-GN

410

Engine Coolant Temperature (ECT) Sensor Signal

77

--

--

Not Used

78

L-BU

468

Intake Air Temperature (IAT) Sensor Signal

79

D-GN/WH

416

5-Volt Reference

80

--

--

Not Used

81

D-GN

890

Octane Selection Switch

82

--

--

Not Used

83

YE/D-BU

1056

Power Steering Pressure Switch Signal

84

PU

833

Rough Road Sensor Return

85

D-BU/WH

1868

Low Reference

86-87

--

--

Not Used

88

PU

1807

CAN Serial Data High

89

YE/D-BU

1744

Fuel Injector 4 Control

90

L-GN/BK

1746

Fuel Injector 2 Control