GM Service Manual Online
For 1990-2009 cars only
Table 1: Powertrain Control Module (PCM) Connector C1
Table 2: Powertrain Control Module (PCM) Connector C2

Powertrain Control Module (PCM) Connector C1


Object Number: 73173  Size: CH

Connector Part Information

    • 12191110
    • 80-Way F Micro-Pack 100 Series (BLU)

Pin

Wire Color

Circuit No.

Function

1

BLK/WHT

351

Ground

2

LT GRN

1867

12 Volt Reference

3

--

--

Not Used

4

LT BLU/BLK

844

Fuel Injector 4 Control

5-7

--

--

Not Used

8

GRY

2701

5 Volt Reference

9

DK BLU

496

KS Signal

10-11

--

--

Not Used

12

YEL

573

CKP Sensor Signal

13-16

--

--

Not Used

17

DK BLU

1225

Transmission Fluid Pressure Switch Signal B - Auto Trans only

18

RED

1226

Transmission Fluid Pressure Switch Signal C - Auto Trans only

19

PNK

439

Ignition 1 Voltage

20

ORN

440

Battery Positive Voltage

21

PPL

574

Low Reference

22

--

--

Not Used

23

BLK

470

Low Reference

24

BLK/WHT

451

Ground

25

--

--

Not Used

26

TAN

1667

H02S Low Signal (Bank 2 Sensor 1)

27

BLK/WHT--

451

Ground

28

TAN/WHT

1669

H02S Low Signal (Bank 1 Sensor 2)

29

TAN/WHT

1664

H02S Low (Bank 1 Sensor 1)

30-31

--

--

Not Used

32

BLK/WHT

771

Transmission Range Switch Signal A - Auto Trans Only

33

PPL

420

TCC Brake Switch/Cruise Control Release Signal

34

WHT

776

Transmission Range Switch Signal P - Auto Trans Only

35

BRN/WHT

379

CPP Switch Signal - Manual Trans Only

36

BLK

1744

Fuel Injector 1 Control

37

PNK/BLK

1746

Fuel Injector 3 Control

38-39

--

--

Not Used

40

BLK/WHT

351

Ground

41-42

--

--

Not Used

43

BLK/WHT

845

Fuel Injector 5 Control

44-45

--

--

Not Used

46

GRY

474

5 Volt Reference

47

--

--

Not Used

48

GRY

2704

5 Volt Reference

49

GRY

1716

Low Reference

50-52

--

--

Not Used

53

BLK

2762

Low Reference - Auto Trans Only

54

ORN/BLK

469

Low Reference

55-56

--

--

Not Used

57

ORN

440

Battery Positive Voltage

58

DK GRN

1049

PCM Class 2 Serial Data

59

YEL

710

Class 2 Serial Data

60

BLK

2752

Low Reference

61

PNK/BLK

632

Low Reference

62

--

--

Not Used

63

Not Used

64

BLK/WHT

451

Ground

65

--

--

Not Used

66

PPL

1666

H02S High Signal - Bank 2, Sensor 1

67

--

--

Not Used

68

PPL/WHT

1668

H02S High Signal - Bank 1, Sensor 2

69

PPL/WHT

1665

HO2S High Signal - Bank 1, Sensor 1

70-71

--

--

Not Used

72

YEL

772

Transmission Range Switch Signal B - Auto Trans only

73

BRN/WHT

633

CMP Sensor Signal

74

YEL

410

ECT Sensor Signal

75

PNK

1020

OFF/RUN/CRANK Voltage - Auto Trans Only

76

LT GRN/BLK

1745

Fuel Injector 2 Control

77

YEL/BLK

846

Fuel Injector 6 Control

78

--

--

Not Used

79

WHT

687

3-2 Shift Solenoid Valve Control - Auto Trans Only

80

BLK

2761

Low Reference

Powertrain Control Module (PCM) Connector C2


Object Number: 73173  Size: CH

Connector Part Information

    • 12191110
    • 80-Way F Micro-Pack 100 Series (RED)

Pin

Wire Color

Circuit No.

Function

1

BLK/WHT

351

Ground

2

BRN

418

TCC PWM Solenoid Vavle Control - Auto Trans Only

3-5

--

--

Not Used

6

RED/BLK

1228

PC Solenoid Valve High Control, Sol. A - Auto Trans Only

7

--

--

Not Used

8

LT BLU/WHT

1229

PC Solenoid Valve Low Control, Sol. A - Auto Trans Only

9

DK GRN/WHT

465

Fuel Pump Relay Control

10

WHT

121

Engine Speed Signal

11-12

--

--

Not Used

13

LT BLU/BLK

396

Cruise Control Engaged Signal

14

--

--

Not Used

15

RED

225

Generator Turn On Signal

16

GRY/BLK

1694

4WD Low Signal - Auto Trans Only

17

DK GRN/WHT

762

A/C Request Signal

18-19

--

--

Not Used

20

LT GRN/BLK

822

VSS Low Signal

21

PPL/WHT

821

VSS High Signal

22-23

--

--

Not Used

24

DK BLU

417

TP Sensor Signal

25

TAN

472

IAT Sensor Signal

26

WHT

423

IC Timing Control

27-30

--

--

Not Used

31

YEL

492

MAF Sensor Signal

32

LT GRN

432

MAP Sensor Signal

33

--

--

Not Used

34

DK GRN/WHT

428

EVAP Canister Purge Solenoid Control

35-38

--

--

Not Used

39

RED

631

12 Volt Reference

40

BLK/WHT

351

Ground

41

--

--

Not Used

42

TAN/BLK

422

TCC Solenoid Valve Control - Auto Trans Only

43

DK GRN/WHT

459

A/C Compressor Clutch Relay Control

44

--

--

Not Used

45

WHT

1310

EVAP Canister Vent Solenoid Control

46

BRN/WHT

419

MIL Control

47

YEL/BLK

1223

2-3 Shift Solenoid Valve Control - Auto Trans Only

48

LT GRN

1222

1-2 Shift Solenoid Valve Control - Auto Trans Only

49

YEL/BLK

1827

Vehicle Speed Signal

50

DK GRN/WHT

817

Vehicle Speed Signal

51

YEL/BLK

1227

TFT Sensor Signal - Auto Trans Only

52

BRN

2391

HO2S Heater Low Control (Bank 1 Sensor 2)

53

--

--

Not Used

54

PPL

1589

Fuel Level Sensor Signal

55

DK GRN

603

A/C Low Pressure Switch Signal

56

--

--

Not Used

57

BLK

2760

Low Reference

58-61

--

--

Not Used

62

GRY

773

Transmission Range Switch Signal C - Auto Trans Only

63

PNK

1224

Transmission Fluid Pressure Switch Signal A - Auto Trans Only

64

DK GRN

890

Fuel Tank Pressure Sensor Signal

65-71

--

--

Not Used

72

BLK

3113

HO2S Heater Low Control (Bank 1 Sensor 1)

73

--

--

Not Used

74

LT GRN

3212

HO2S Heater Low Control (Bank 2 Sensor 1)

75

GRY

23

Generator Field Duty Cycle Signal

76

LT GRN/WHT

1749

IAC Coil B High Control

77

LT GRN/BLK

444

IAC Coil B Low Control

78

LT BLU/BLK

1748

IAC Coil A Low Control

79

LT BLU/WHT

1747

IAC Coil A High Control

80

--

--

Not Used