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Old 10-25-2008, 02:14 PM   #1
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Default Need '99 PCM Wiring Diagram

Anyone know where I can find a wiring diagram for a '99 automatic? I want to re-wire the engine harness and I want to eliminate the wires that go to the parts I have deleted. I am also wanting to see which wires go through the firewall. Thanks George
__________________
1999 Trans Am WS6

Virginia Speed LSX 418
Midwest Chassis, Inc.
TH-400 & 5600 Stall
686fwhp @ 7,000 rpm
10.11 @ 131.22 Shakedown Run
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Old 10-25-2008, 02:31 PM   #2
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1989 GMC Sierra 1500
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I got it. How do you want me to send it.
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Old 10-25-2008, 02:54 PM   #3
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Can you email it to me, in a PDF format? Thanks
__________________
1999 Trans Am WS6

Virginia Speed LSX 418
Midwest Chassis, Inc.
TH-400 & 5600 Stall
686fwhp @ 7,000 rpm
10.11 @ 131.22 Shakedown Run
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Old 10-25-2008, 06:04 PM   #4
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1989 GMC Sierra 1500
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Connector C1
• PCM Connector C1 Assembly 12191489

• TPA (BLU) 12176408

• Connector Cover 12191108


1
BLK
451
PCM Ground

2
LT GRN
1867
Crankshaft Position Sensor B+ Supply

3
PNK/BLK
1746
Injector 3 Control

4
LT GRN/BLK
1745
Injector 2 Control

5-7
--
--
Not Used

8
GRA
596
TP Sensor 5V Reference

9-10
--
--
Not Used

11
LT BLU
1876
Knock Sensor Signal Rear

12
DK BLU/WHT
1869
Crankshaft Position Sensor Signal

13-16
--
--
Not Used

17
DK BLU
1225
Transmission Range Signal B

18
RED
1226
Transmission Range Signal C

19
PNK
439
Ignition Positive Voltage

20
ORN
340
Battery Positive Voltage

21
YEL/BLK
1868
Crankshaft Position Sensor Reference Low

22
--
--
Not Used

23
GRA
720
Fuel Tank Pressure Sensor/Fuel Tank Sender Ground

24
--
--
Not Used

25
TAN
1671
HO2S Signal Low Bank 2 Sensor 2

26
TAN
1667
HO2S Signal Low Bank 2 Sensor 1

27
--
--
Not Used

28
TAN/WHT
1669
HO2S Signal Low Bank 1 Sensor 2

29
TAN/WHT
1653
HO2S Signal Low Bank 1 Sensor 1

30-31
--
--
Not Used

32
GRY
48
Clutch Pedal Position Switch Signal

33
PPL
420
TCC Brake Switch

34
ORN/BLK
434
PNP Switch Signal

35
--
--
Not Used

36
BLK
1744
Injector 1 Control

37
YEL/BLK
846
Injector 6 Control

38-39
--
--
Not Used

40
BLK
451
PCM Ground

41
BLK
407
EGR Pintle Position Sensor Ground

42
DK GRN
335
Engine Cooling Fan Relay 1 Control

43
RED/BLK
877
Injector 7 Control

44
LT BLU/BLK
844
Injector 4 Control

45
GRA
474
A/C Refrigerant Pressure Sensor 5V Reference

46
GRA
474
Fuel Tank Pressure Sensor 5V Reference

47
GRA
416
EGR Pintle Position Sensor 5V Reference

48
GRA
416
MAP Sensor 5V Reference

49-50
--
--
Not Used

51
DK BLU
496
Knock Sensor Signal Front

52
--
--
Not Used

53
BLK
407
Transmission Temperature Sensor Ground

54
ORN/BLK
407
MAP Sensor Ground

55
BRN
1456
EGR Pintle Position Sensor Signal

56
--
--
Not Used

57
ORN
340
Battery Positive Voltage

58
DK GRN
1049
Serial Data

59
--
--
Not Used

60
BLK
452
TP Sensor Ground

61
PNK/BLK
632
Camshaft Position Sensor Reference Low

62-64
--
--
Not Used

65
PPL
1670
HO2S Signal High Bank 2 Sensor 2

66
PPL
1666
HO2S Signal High Bank 2 Sensor 1

67
--
--
Not Used

68
PPL/WHT
1668
HO2S Signal High Bank 1 Sensor 2

69
PPL/WHT
1665
HO2S Signal High Bank 1 Sensor 1

70
BRN
1174
Low Oil Level Switch

71-72
--
--
Not Used

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
Injector 5 Control

77
DK BLU/WHT
878
Injector 8 Control

78
--
--
Not Used

79
GRA or WHT
587 or 687
Skip Shift Solenoid Control (M/T) or 3-2 Shift Solenoid Control (A/T)

80
BLK
407
Engine Coolant Temperature (ECT) Sensor Ground


Connector C2
Information
• PCM Connector C2 Assembly 12191488

• TPA (RED) 12176410

• Connector Cover 12191108


1
BLK
451
PCM Ground

2
BRN
418
TCC Control Solenoid

3
--
--
Not Used

4
PPL
421
AIR Solenoid Relay Control

5
--
--
Not Used

6
RED/BLK
1228
Transmission Fluid Pressure Control Solenoid High

7
RED
1676
EGR Control

8
LT BLU/WHT
1229
Transmission Fluid Pressure Control Solenoid Low

9
DK GRN/WHT
465
Fuel Pump Relay Control

10
WHT
121
Engine Speed (Tach) Output Signal

11-12
--
--
Not Used

13
WHT
85
Cruise Control Enable Signal

14
RED/BLK
380
A/C Refrigerant Pressure Sensor Signal

15
RED
225
Alternator L Terminal

16
--
--
Not Used

17
DK GRN/WHT
762
A/C Request Signal

18
DK GRN
59
A/C Status Signal

19
--
--
Not Used

20
LT GRN/BLK
822
Vehicle Speed Sensor (VSS) Reference Low

21
PPL/WHT
821
Vehicle Speed Sensor (VSS) Signal

22-23
--
--
Not Used

24
DK BLU
417
TP Sensor Signal

25
TAN
472
IAT Sensor Signal

26
PPL
2121
Ignition Control 1

27
RED
2127
Ignition Control 7

28
LT BLU/WHT
2126
Ignition Control 6

29
DK GRN/WHT
2124
Ignition Control 4

30
DK BLU
229
VTD Fuel Enable Signal

31
YEL
492
MAF Sensor Signal

32
LT GRN
432
MAP Sensor Signal

33
DK BLU
473
Engine Cooling Fan Relay 2 and 3 Control

34
DK GRN/WHT
428
EVAP Canister Purge Valve Control

35
--
--
Not Used

36
BRN
436
AIR Pump Relay Control

37
DK GRN
83
Cruise Control Inhibit

38
--
--
Not Used

39
RED
631
Camshaft Position Sensor B+ Supply

40
BLK
451
PCM Ground

41
GRA
435
EGR Position Sensor Ground

42
TAN/BLK
422
TCC Enable Circuit

43
DK GRN/WHT
459
A/C Clutch Relay Control

44
LT GRN
1652
Reverse Inhibit Solenoid Control

45
WHT
1310
EVAP Canister Vent Valve Control

46
BRN/WHT
419
Malfunction Indicator Lamp (MIL) Control

47
YEL/BLK
1223
Transmission Shift Solenoid B

48
LT GRN
1222
Transmission Shift Solenoid A

49
--
--
Not Used

50
DK GRN/WHT
817
Vehicle Speed Output Circuit

51
YEL/BLK
1227
Transmission Temperature Sensor Signal

52
--
--
Not Used

53
GRA/BLK
1687
Spark Retard Signal

54
PPL
1589
Fuel Level Sensor Signal

55-56
--
--
Not Used

57
PPL
719
IAT Sensor Ground

58-59
--
--
Not Used

60
BRN
2129
Ignition Control Reference Low Bank 1

61
BRN/WHT
2130
Ignition Control Reference Low Bank 2

62
--
--
Not Used

63
PNK
1224
Transmission Range Signal A

64
DK GRN
890
Fuel Tank Pressure Sensor Signal

65
--
--
Not Used

66
PPL/WHT
2128
Ignition Control 8

67
RED/WHT
2122
Ignition Control 2

68
DK GRN
2125
Ignition Control 5

69
LT BLU
2123
Ignition Control 3

70-75
--
--
Not Used

76
LT GRN/WHT
1749
IAC Coil B High

77
LT GRN/BLK
444
IAC Coil B Low

78
LT BLU/BLK
1748
IAC Coil A Low

79
LT BLU/WHT
1747
IAC Coil A High

80
--
--
Not Used
Attached Thumbnails
Need '99 PCM Wiring Diagram-c1.gif   Need '99 PCM Wiring Diagram-c2.gif  
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Old 10-26-2008, 01:13 PM   #5
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Thanks this is some great info and for all your time to type it in. Thanks again George
__________________
1999 Trans Am WS6

Virginia Speed LSX 418
Midwest Chassis, Inc.
TH-400 & 5600 Stall
686fwhp @ 7,000 rpm
10.11 @ 131.22 Shakedown Run
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Old 10-26-2008, 10:14 PM   #6
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If you need the fuel segment and using EFILive pm me. Doc @ EFIAlchemy sent me the correct one so you dont have to calibrate it.
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Old 12-17-2008, 11:29 AM   #7
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Any easy way to tell which pin on the PCM pigtails is what? I hate piercing into wires
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Old 12-17-2008, 11:29 AM
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