GM Service Manual Online
For 1990-2009 cars only
Table 1: PCM Connector C1
Table 2: PCM Connector C2

PCM Connector C1


Object Number: 15026  Size: CF

Connector Part Information

    • Complete Assembly (W/O TPA) - 12160956
    • TPA (Blue) - 12191318
    • Terminal - 12084913

Pin

Wire Color

Circuit No.

Function

1-3

--

--

Not Used

4

LT GRN

1222

1-2 Shift Sol. Valve Control

5

DK BLU

473

Cooling Fan Relays #2 and #3 Control

6

DK GRN

335

Cooling Fan Relay #1 Control

7

ORN

1799

CMP Sensor Signal

8

LT BLU/WHT

1800

CKP Sensor A Signal

9

YEL

573

CKP Sensor B Signal

10, 11

--

--

Not Used

12

BLK

470

ECT Sensor Ground

13

ORN/BLK

469

MAP Sensor Ground

14, 15

--

--

Not Used

16

BLK/WHT

451

PCM Ground

17

BLK

407

IAT Sensor Ground

18

--

--

Not Used

19

PPL

1500

PCM Ignition Feed (Wake-Up)

20

ORN

540

PCM Battery

21

--

--

Not Used

22

PNK

1224

Trans Fluid Pressure Switch A

23

LT BLU

495

Power Steering Pressure Switch Input

24-27

--

--

Not Used

28

TAN/WHT

1669

HO2S #2 (Post-Converter) Low

29

TAN

413

HO2S #1 Low

30

PPL

420

TCC Brake Switch Input

31

BRN

718

EGR Pintle Sensor Ground

32

GRY

435

EGR Valve Control Ground

33

DK BLU

496

KS Signal

34-37

--

--

Not Used

38

LT GRN/WHT

1749

IAC Coil B High

39-42

--

--

Not Used

43

YEL/BLK

846

Fuel Injector #6 Control

44

YEL/BLK

1223

2-3 Shift Sol. Valve Control

45

PPL

421

AIR Solenoid Valve (If Equipped)

46

LT GRN/BLK

1745

Fuel Injector #2 Control

47

BLK

1744

Furl Injector #1 Control

48

RED/BLK

453

Reference Low (Ignition Coil Modules)

49

PPL

2121

Ignition Control (IC) #1

50

RED/WHT

2122

Ignition Control (IC) #2

51

LT BLU/WHT

2126

Ignition Control (IC) #6

52

DK GRN

2125

Ignition Control (IC) #5

53

DK GRN/WHT

2124

Ignition Control (IC) #4

54

LT BLU

2123

Ignition Control (IC) #3

55

DK GRN/WHT

817

Vehicle Speed Signal Output

56, 57

BLK/WHT

451

PCM Ground

58

DK/GRN

1049

Class 2 Data Line

59

--

--

Not Used

60

BLK/WHT

451

PCM Ground

61

BLK

552

TP Sensor Ground

62

DK BLU/WHT

1231

A/T ISS Sensor Low

63

RED/BLK

1230

A/T ISS Sensor High

64

YEL

400

VSS High

65

PPL

401

VSS Low

66, 67

--

--

Not Used

68

YEL

772

Transaxle Range Switch Input B

69

YEL

492

Mass Air Flow (MAF) Sensor Signal

70

--

--

Not Used

71

ORN/BLK

463

Desired Torque Input

72

DK GRN

83

Cruise Inhibit

73

LT BLU/BLK

844

Fuel Injector #4 Control

74, 75

--

--

Not Used

76

DK GRN/WHT

428

EVAP Canister Purge Solenoid Valve Control

77, 78

--

--

Not Used

79

BLK/WHT

845

Fuel Injector #5 Control

80

--

--

Not Used

PCM Connector C2


Object Number: 15030  Size: CF

Connector Part Information

    • Complete Assembly (W/O TPA) - 12160548
    • TPA (Clear) - 12191319
    • Terminal - 12084913

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

WHT

1310

EVAP Canister Vent Solenoid Valve Control

3

DK GRN/WHT

465

Fuel Pump Relay Control

4

RED

1676

EGR Valve Solenoid Control

5

BRN/WHT

419

MIL Control

6

--

--

Not Used

7

LT BLU/WHT

1747

IAC Coil A High

8

WHT

121

TACH Output

9

TAN/BLK

464

Delivered Torque Output

10

PPL

412

HO2S #1 Signal

11

PPL/WHT

1668

HO2S #2 (Post-Converter) Signal

12-15

--

--

Not Used

16

WHT

776

Transaxle Range Switch Parity Input

17

RED

1226

Trans Fluid Pressure Switch C

18

BLK/WHT

771

Transaxle Range Switch Input A

19

TAN/BLK

231

Engine Oil Pressure Switch Input

20, 21

--

--

Not Used

22

DK GRN/WHT

762

A/C Request Signal

23

PPL

806

Crank Request

24

PNK

439

PCM Ignition Feed (Run, Crank)

25

LT GRN

432

MAP Sensor Signal

26

YEL

410

ECT Sensor Signal

27

RED/BLK

380

A/C Pressure Sensor Signal

28

BRN

1456

EGR Pintle Position Signal

29

GRY

23

Generator Terminal F (Field) Input

30-32

--

--

Not Used

33

GRY

416

5 Volt Reference A (TP, MAP, EGR)

34

GRY

474

5 Volt Reference B (FTP, A/C Press. Sensor)

35

BLK

452

Sensor Ground

36-38

--

--

Not Used

39

DK GRN/WHT

459

A/C Compressor Relay Control

40, 41

--

--

Not Used

42

PNK/BLK

1746

Fuel Injector #3 Control

43

--

--

Not Used

44

LT BLU/BLK

1748

IAC Coil A Low

45

RED/BLK

1228

Pressure Control Solenoid High

46

LT BLU/WHT

1229

Pressure Control Solenoid Low

47-48

--

--

Not Used

49

LT GRN/BLK

444

IAC Coil B Low

50

TAN

472

IAT Sensor Signal

51-54

--

--

Not Used

55

DK GRN

890

Fuel Tank Pressure Sensor Input

56

GRY

773

Transaxle Range Switch Input C

57

DK BLU

1225

Trans Fluid Pressure Switch B

58

BRN

1174

Engine Oil Level Indicator Input

59

WHT

85

Cruise Engaged Input

60

--

--

Not Used

61

RED

225

Generator Terminal L Output

62

--

--

Not Used

63

YEL

657

TCC Release Switch

64-65

--

--

Not Used

66

DK BLU

417

TP Sensor Signal

67

--

--

Not Used

68

YEL/BLK

1227

TFT Sensor Signal

69

PPL

30

Fuel Level Sensor Input

70, 71

--

--

Not Used

72

RED

631

CKP/CMP Sensor Power

73

PNK/BLK

632

Reference Lo

74

--

--

Not Used

75

BRN

436

AIR Pump Relay Control (If Equipped)

76

YEL/BLK

625

Crank Relay Control

77

--

--

Not Used

78

BRN

418

TCC PWM Sol. Valve Control

79, 80

--

--

Not Used