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

PCM Connector C1 (BLU)


Object Number: 23346  Size: CF

Connector Part Information

    • PCM Connector C1 Assembly 12191489
    • TPA (BLU) 12176408
    • Connector Cover 12191108

Pin

Wire Color

Circuit No.

Function

1-5

--

--

Not Used

6

ORN/BLK

510

Fuel Tank Pressure Sensor Ground

Fuel Level Sensor/Fuel Pump Ground

7

BRN/WHT

633

CMP Sensor Signal

8

PPL/WHT

430

CKP 7x Reference Signal

9

--

--

Not Used

10

GRY

705

Fuel Tank Pressure Sensor 5 Volt Reference

11-17

--

--

Not Used

18

BLK/WHT

351

PCM Ground 4

19

PNK

439

Ignition Positive Voltage

20

ORN

440

Battery Positive Voltage (B+)

21

DK BLU

417

TP Sensor Signal

22-24

--

--

Not Used

25

ORN

406

Ignition Control B

26

WHT

423

Ignition Control A

27

--

--

Not Used

28

RED

1226

Transmission Range C input

29

BLK/WHT

771

PRNDL A Input

30-32

--

--

Not Used

33

DK BLU

496

KS Signal

34

--

--

Not Used

35

PPL

420

Brake Switch Input

36

LT BLU

203

A/C Request Signal

37-44

--

--

Not Used

45

DK GRN

890

Fuel Tank Pressure Sensor Signal

46

YEL/BLK

1227

TFT sensor Signal

47-48

--

--

Not Used

49

RED/BLK

380

A/C Refrigerant Pressure Sensor Signal

50-51

--

--

Not Used

52

BLK

552

A/C Refrigerant Pressure Sensor Ground

53

--

--

Not Used

54

YEL

410

ECT Sensor Signal

55

PPL

1589

Fuel Level Sensor Signal

56

--

--

Not Used

57

BLK

452

TP Sensor Ground

58

YEL

710

Serial Data (Class 2)

59

DK GRN

1049

Serial Data (Class 2)

60

BLK/WHT

351

PCM Ground 2

61

PNK

1020

Ignition Positive Voltage

62

LT GRN

432

MAP Sensor Signal

63

PPL/WHT

821

VSS High

64-66

--

--

Not Used

67

DK BLU

1225

Transmission Range B Input

68

PNK

1224

Transmission Range A Input

69

YEL

772

PRNDL B

70

YEL/BLK

1827

High Resolution Vehicle Speed Output (EBCM)

71

WHT

1579

Fuel Comp/Temp Signal

72

GRA

773

PRNDL C

73

WHT

776

PRNDL P

74

RED

225

Generator L Term

75

BLK

1744

Fuel Injector #1 Driver

76

LT GRN/BLK

1745

Fuel Injector #2 Driver

77-80

--

--

Not Used

PCM Connector C2 (RED)


Object Number: 23346  Size: CF

Connector Part Information

    • PCM Connector C2 Assembly 12191488
    • TPA (RED) 12176410
    • Connector Cover 12191108

Pin

Wire Color

Circuit No.

Function

1-5

--

--

Not Used

6

RED/BLK

1228

PC Solenoid Valve High

7

--

--

Not Used

8

DK GRN/WHT

465

Fuel Pump Relay Control

9

LT BLU/WHT

1229

PC Solenoid Valve Low

10

WHT

121

Tachometer Output

11

PPL

719

Fuel Composition Sensor Ground

12-13

--

--

Not Used

14

BLK/WHT

1704

MAP Sensor Ground

15

--

--

Not Used

16

DK GRN/WHT

817

VSS Output (Cruise/BCM)

17

DK GRN

389

VSS Output (Cluster/Radio)

18-19

--

--

Not Used

20

TAN

472

IAT Sensor Signal

21

TAN

413

O2S 1 Low

22

PPL

412

O2S 1 Signal

23

TAN/WHT

1669

HO2S 2 Low

24

PPL/WHT

1668

HO2S 2 Signal

25-26

--

--

Not Used

27

BRN

718

ECT Sensor Ground

28

GRY

720

IAT Sensor Ground

29

BLK

407

TFT Sensor Ground

30

--

--

Not Used

31

RED/BLK

453

ICM Reference Low

32

--

--

Not Used

33

GRY

416

TP Sensor 5 Volt Reference

34

GRY

596

A/C Refrigerant Pressure Sensor 5 Volt Reference

35

GRY

474

MAP Sensor 5 Volt Reference

36

RED

631

CMP Sensor Feed

37-44

--

--

Not Used

45

PPL

1589

Cruise Disable / Fuel Level

46

BRN/WHT

419

MIL Control

47

--

--

Not Used

48

LT BLU/BLK

396

Cruise Engaged Input

49

--

--

Not Used

50

TAN/BLK

422

TCC Solenoid Control

51

YEL/BLK

1223

2-3 Shift Solenoid Valve Control

52

WHT

687

3-2 Shift Solenoid Valve Control

53

LT GRN

1222

1-2 Shift Solenoid Valve Control

54

--

--

Not Used

55

DK GRN/WHT

459

A/C Compressor Clutch Relay Control

56

DK GRN/WHT

428

EVAP Canister Purge Valve Control

57

BRN

418

TCC PWM Solenoid Control

58

WHT

1310

EVAP Canister Vent Valve Control

59

--

--

Not Used

60

BRN

436

AIR Pump Relay Control

61

--

--

Not Used

62

LT GRN/BLK

822

VSS Low

63

PNK/BLK

632

CMP Sensor Ground

64

BLK/WHT

351

PCM Ground 1

65-70

--

--

Not Used

71

LT BLU/WHT

1747

IAC Coil A High

72

LT GRN/WHT

1749

IAC Coil B High

73

LT GRN/BLK

444

IAC Coil B Low

74

LT BLU/BLK

1748

IAC Coil A Low

75

LT BLU/BLK

844

Fuel Injector # 4 Driver

76

PNK/BLK

1746

Fuel Injector # 3 Driver

77-80

--

--

Not Used