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                      1997-98 LS1 PCM pinouts (Camaro, Firebird) Corvette similar

                                

PCM connector (RED) C1

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

--

--

3

WHT

1310

EVAP Canister Vent Solenoid Valve Pin "B"

4

BRN/WHT

633

CMP sensor Pin "A"

  5-6              --        --  Not Used

7

YEL

400

VSS signal return Pin "B"

8

--

--

Not Used

     9       PNK/BLK        1746 Fuel Injector #3 Control 

10

--

--

Not Used

11

DK BLU

229

Theft Deterrent Fuel Enable (Factory Only)

12

LT. BLU/BLK

844

Fuel Injector #4 Control 

   13       RD/WHT      2122 IC # 2 Control 
   14      DK. GRN        59 AC Clutch Status
   15       BLK/WHT       845 Fuel Injector #5 Control 

16

--

--

Not Used

17

--

--

Not Used

18

YEL/BLK

846

Fuel Injector #6 Control 

19

--

--

Not Used

20

--

--

Not Used

21

PPL 

719

IAT Sensor Ground Pin "A"

22

DK. BLU

1225

Transmission Range Signal "B"  Pin "R"

23

LT. GRN/BLK

1745

Fuel Injector #2  Control 

24

BLK/WHT

1704

Sensor Ground Jumper

25

PNK

1224

Transmission Range Signal "A" Pin "N"

26

--

--

Not Used

27

RED/BLK

877

Fuel Injector #7  Control 

28

--

--

Not Used

29

--

--

Not Used

   30       GRA/BLK        1687 TCS Spark Retard Signal

31

DK. BLU/WHT

878

Fuel Injector #8  Control 

32

ORG/BLK 

434

Park-Neutral Switch signal

33

BLK

1744

Fuel Injector #1  Control 

34

GRAY or WHT

587

Skip Shift Sol (M6) or 3-2 Shift Sol. (AT) Pin "S"

35

LT. GRN

1222

1-2 Shift Solenoid Pin "A"

36

DK. BLU

1936

Fuel Gauge Output Control (Factory Only)

37

BRN/WHT

419

MIL Control

   38            --          -- Not Used

39

DK. GRN/WHT 

459

AC Clutch Relay Control

40

WHT or YEL/BLK

1223

Skip Shift Lamp (M6) or 2-3 Shift Sol. (AT)  Pin "B"

41

BRN/WHT

1173

Low Oil Level lamp Control

42

LT GRN

1652

Reverse Inhibit Sol. Control

43

DK. GRN 

335

Cooling Fan #1 relay control

44

YEL 

573

CKP sensor input Pin "A"

45

DK. GRN/WHT 

428

EVAP Canister Purge Valve Control Pin "B"

46

--

--

Not Used

47

DK. GRN/WHT

762

AC Request Signal

48

YEL 

492

MAF Sensor Input Signal Pin "A"

    49           PPL       2121 IC # 1 control 

50

--

--

Not Used

51

--

--

Not Used

52

PPL/WHT

2128

IC # 8 control 

53

RED

2127

IC # 7 control 

54

LT. BLU/WHT

2126

IC # 6 control 

55

DK. GRN/WHT

817

VSS Output signal to Cruise Module and Speedometer

56

DK. GRN

2125

IC # 5 control 

57

DK. GRN/WHT

2124

IC # 4 control 

58

LT. BLU

2123

IC # 3 control 

59

BRN/WHT

2130

IC Coil Reference Low  2-4-6-8

60

BRN

2129

IC Coil Reference Low  1-3-5-7

61

RED 

1226

Trans. Range Signal "C"   Pin "P"

    62          BLK        552 EGR Pintle Position Ground Pin "B"
    63          BLK        407 AC Pressure Switch Ground Pin "A"

64-70 

--

--

Not Used

   71           PPL        401 VSS Signal Low Pin "A"

72

BLK

451

PCM Ground

73-74

--

--

Not Used

75

GRA

720

Fuel Sensor Ground (Factory Only)

76

BLK

451

PCM Ground

77

PPL

420

TCC/Brake Switch Signal

78-80

--

--

Not Used

 

 

PCM connector (BLUE) C2


Pin

Wire Color

Circuit No.

Function

1

TAN

1671

HO2S Signal Low bank 2 Sensor 2

2

TAN/WHT

1669

HO2S Signal Low bank 1 Sensor 2

3

TAN

800

Serial Data (UART)

4

RED

631

CMP Sensor 12V input Pin "C"

5

TAN

1667

HO2S Signal Low bank 2 Sensor 1

6

TAN/WHT

1653

HO2S Signal Low bank 1 Sensor 1

7

RED/BLK

380

AC Press. Sensor Signal Pin "C"

8

TAN

472

IAT Sensor Signal In Pin "B"

9

BRN

1456

EGR Pintle Position Input Pin "C"

10

PPL

30

Fuel level Input Signal

    11              GRA        23 Generator F-Terminal

12

DK BLU

417

TPS Signal Input Pin "C"

13

YEL/BLK

1227

TFT Sensor Signal Input  Pin "L"

14

ORG/BLK

1057

TFT Sensor Signal Ground Pin "M"

15-17

--

--

Not Used

    18             GRA        48 Clutch Anticipate Switch

19

PNK 

439

PCM Ignition Power Feed

20

ORG

340

PCM Battery Feed

21

BLK

451

PCM Ground

    22           YEL/BLK       1868 CKP Sensor Ref. Low Pin "B"

23

BLK

452

TPS Sensor Ground Pin "B"

24

BLK/WHT

1704

PCM Ground Jumper

25

BRN

718

ECT Sensor Ground Pin "A"

26

ORG/BLK

469

MAP Sensor Ground Pin "A"

27

--

--

Not Used

28

DK. BLU

473

Engine Cooling Fan Relay #2 and 3 Control

29

--

--

Not Used

30

BRN

436

AIR Pump Relay Control

31

PPL 

421

AIR Solenoid Relay Control

32

TAN/BLK

422

TCC Solenoid Valve Control Pin "T"

33

BRN

418

TCC PWM Sol. Valve Control Pin "U"

34

GRA

435

EGR Valve Ground Pin "A"

35

WHT

121

Engine Speed (Tachometer) Output Signal

36

LT. BLU/WHT

1229

Trans.Fluid press. Control Sol. Control Low. Pin "D"

37

DK GRN/WHT

465

Fuel Pump Relay Control

38

LT BLU

697

EGR Valve Control Pin "E"

39

RED/BLK

1228

Trans. Fluid Press Control Solenoid High Pin "C"

40

--

--

Not Used

41

PPL 

1670

HO2S Signal High bank 2 Sensor 2

42

PPL/WHT

1668

HO2S Signal High bank 1 Sensor 2

43

GRA

596

TPS 5V reference signal Pin "A"

44-45

--

--

Not Used

46

PPL

1666

HO2S Signal High bank 2 Sensor 1

47

PPL/WHT

1665

HO2S Signal High bank 1 Sensor 1

48

LT GRN

432

MAP Sensor Signal Input Pin "B"

49

YEL

410

ECT Signal Input Pin "B"

50-51

--

--

Not Used

52

DK. GRN

890

Fuel Tank Pressure Signal Input

53

--

--

Not Used

54

LT GRN/BLK

444

IAC Coil B Low  Pin "A"

    55      LT BLU/BLK      1748 IAC Coil A Low  Pin "C"

56

     LT BLU/WHT

1747

IAC Coil A High  Pin "D"

57

LT GRN/WHT

1749

IAC Coil B High  Pin "B"

    58            PPL       1807 Serial Data Class II

59

--

--

Not Used

60

BLK

451

PCM Ground

61

ORG

340

PCM Battery Feed

62

LT GRN

1867

CKP Sensor 12V Power Pin "C"

63

--

--

Not Used

64

GRA

416

MAP Sensor 5V reference Pin "C"

65

GRA

705

EGR Valve 5V Reference Pin "D"

66

GRA

474

AC Press Sensor 5V Reference Pin "B"

67

GRA

598 

Fuel tank Pressure Sensor 5V Reference

68

LT BLU

1876

Rear Knock Sensor

69

DK BLU

496

Front Knock Sensor

    70         PNK/BLK       632 CMP Sensor Reference Low Pin "B"

71-75

--

--

Not Used

76

BRN

1174

Oil Level Sensor Switch

77-80

--

--

Not Used

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