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2003-2004 Corvette PCM pinouts:

 


PCM Connector (BLUE

Connector Part Information

Pin

Wire Color

Circuit No.

Function

1

BLK/WHT

451

Ground

2

LT GRN

1867

12 Volt Reference

3

PNK/BLK

1746

Fuel Injector 3 Control

4

LT GRN/BLK

1745

Fuel Injector 2 Control

5-6

--

--

Not Used

7

GRA

596

5 Volt Reference

8-10

--

--

Not Used

11

LT BLU

1876

Knock Sensor 2 Signal

12

DK BLU/WHT

1869

Crankshaft Position (CKP) Sensor Signal

13

ORN/BLK

463

Requested Torque Signal

14

TAN

800

Throttle Actuator Control Serial Data

15

ORN/BLK

1061

Throttle Actuator Control Serial Data

16

--

--

Not Used

17

DK BLU

1225

Transmission Fluid Pressure Switch Signal B

18

RED

1226

Transmission Fluid Pressure Switch Signal C

19

PNK

239

Ignition 1 Voltage

20

ORN

340

Battery Positive Voltage

21

YEL/BLK

1868

Low Reference

22

--

--

Not Used

23

GRA

720

Low Reference

24

--

--

Not Used

25

TAN

1671

HO2S Low Signal Bank 2 Sensor 2

26

TAN

1667

HO2S Low Signal Bank 2 Sensor 1

27

--

--

Not Used

28

TAN/WHT

1669

HO2S Low Signal Bank 1 Sensor 2

29

TAN/WHT

1653

HO2S Low Signal Bank 1 Sensor 1

30-31

--

--

Not Used

32

BLK/WHT

771

Transmission Range Switch Signal A

33

PPL

420

TCC Brake Switch Signal

34

WHT

776

Transmission Range Switch Signal P

35

GRA

48

CPP Switch Signal

36

BLK

1744

Fuel Injector 1 Control

37

YEL/BLK

846

Fuel Injector 6 Control

38

PNK/WHT

1101

Damping Lift/Dive Signal

39

--

--

Not Used

40

BLK/WHT

451

Ground

41

--

--

Not Used

42

DK GRN

335

Low Speed Cooling Fan Relay Control

43

RED/BLK

877

Fuel Injector 7 Control

44

LT BLU/BLK

844

Fuel Injector 4 Control

45

GRA

474

5 Volt Reference

46

GRA

598

5 Volt Reference

47

--

--

Not Used

48

GRA

416

5 Volt Reference

49-50

--

--

Not Used

51

DK BLU

496

Knock Sensor 1 Signal

52

--

--

Not Used

53

ORN/BLK

1057

Low Reference

54

ORN/BLK

469

Low Reference

55-56

--

--

Not Used

57

ORN

340

Battery Positive Voltage

58

DK GRN

1049

PCM Class 2 Serial Data

59

--

--

Not Used

60

BLK

407

Low Reference

61

PNK/BLK

632

Low Reference

62

GRA

847

Extended Travel Brake Switch Signal

63

BLK

452

Low Reference

64

--

--

Not Used

65

PPL

1670

HO2S High Signal Bank 2 Sensor 2

66

PPL

1666

HO2S High Signal Bank 2 Sensor 1

67

--

--

Not Used

68

PPL/WHT

1668

HO2S High Signal Bank 1 Sensor 2

69

PPL/WHT

1665

HO2S High Signal Bank 1 Sensor 1

70

BRN

1174

Oil Level Switch Signal

71

--

--

Not Used

72

YEL

772

Transmission Range Switch Signal B

73

BRN/WHT

633

Camshaft Position (CMP) Sensor Signal

74

YEL

410

Engine Coolant Temperature (ECT) Sensor Signal

75

--

--

Not Used

76

BLK/WHT

845

Fuel Injector 5 Control

77

DK BLU/WHT

878

Fuel Injector 8 Control

78

--

--

Not Used

79

GRA

587

Skip Shift Solenoid Control

79

WHT

687

3-2 Shift Solenoid Valve Control

80

BRN

718

Low Reference

 

PCM Connector (RED

Connector Part Information

Pin

Wire Color

Circuit No.

Function

1

BLK/WHT

451

Ground

2

BRN

418

TCC PWM Solenoid Valve Control

3

--

--

Not Used

4

PPL

421

AIR Solenoid Control

5

TAN/BLK

464

Delivered Torque Signal

6

RED/BLK

1228

PC Solenoid valve High Control

7

--

--

Not Used

8

LT BLU/WHT

1229

PC Solenoid Valve Low Control

9

DK GRN/WHT

465

Fuel Pump Relay Control

10

WHT

121

Engine Speed Signal

11-13

--

--

Not Used

14

RED/BLK

380

A/C Refrigerant Pressure Sensor Signal

15

RED

225

Generator Turn On Signal

16

--

--

Not Used

17

DK GRN/WHT

762

A/C Request Signal (C60 only)

18

DK GRN

59

A/C Compressor Clutch Supply Voltage

19

--

--

Not Used

20

PPL

401

Signal Low - Front

21

YEL

400

Signal High - Front

22-24

--

--

Not Used

25

TAN

472

IAT Sensor Signal

26

PPL

2121

IC 1 Control

27

RED

2127

IC 7 Control

28

LT BLU/WHT

2126

IC 6 Control

29

DK GRN/WHT

2124

IC 4 Control

30

--

--

Not Used

31

YEL

492

MAF Sensor Signal

32

LT GRN

432

MAP Sensor Signal

33

DK BLU

473

High Speed Cooling Fan Relay Control

34

DK GRN/WHT

428

EVAP Canister Purge Solenoid Control

35

--

--

Not Used

36

BRN

436

AIR Pump Relay Control

37-38

--

--

Not Used

39

RED

631

12 Volt Reference

40

BLK/WHT

451

Ground

41

--

--

Not Used

42

TAN/BLK

422

TCC Solenoid Valve Control

43

DK GRN/WHT

459

A/C Compressor Clutch Relay Control

44

LT GRN

1652

Reverse Lockout Solenoid Control

45

WHT

1310

EVAP Canister Vent Solenoid Control

46

BRN/WHT

419

Malfunction Indicator Lamp (MIL) Control

47

WHT

375

Skip Shift Indicator Control (MM6)

47

YEL/BLK

1223

2-3 Shift Solenoid Valve Control (M30)

48

LT GRN

1222

1-2 Shift Solenoid Valve Control

49

--

--

Not Used

50

DK GRN/WHT

817

Vehicle Speed Signal

51

YEL/BLK

1227

TFT Sensor Signal

52

GRA

23

Generator Field Duty Cycle Signal

53

--

--

Not Used

54

DK BLU

1936

Fuel Level Sensor Signal

55-56

--

--

Not Used

57

PPL

719

Low Reference

58

TAN/WHT

331

Oil Pressure Sensor Signal

59

--

--

Not Used

60

BRN

2129

Low Reference

61

BRN/WHT

2130

Low Reference

62

GRA

773

Transmission Range Switch Signal C

63

PNK

1224

Transmission Fluid Pressure Switch Signal A

64

DK GRN

890

Fuel Tank Pressure Sensor Signal

65

--

--

Not Used

66

PPL/WHT

2128

IC 8 Control

67

RED/WHT

2122

IC 2 Control

68

DK GRN

2125

IC 5 Control

69

LT BLU

2123

IC 3 Control

70-72

--

--

Not Used

73

LT BLU

1937

Fuel Level Sensor Signal (Secondary)

74-80

--

--

Not Used

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