CHEVYTHUNDER.COM
1997-98 LS1 PCM pinouts (Camaro, Firebird) Corvette similar
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PCM connector (RED) C1
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Pin |
Wire Color |
Circuit No. |
Function |
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1 |
-- |
-- |
Not Used |
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2 |
-- |
-- |
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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 |
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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" |
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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 |
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PCM connector (BLUE) C2
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Pin |
Wire Color |
Circuit No. |
Function |
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1 |
TAN |
1671 |
HO2S Signal Low bank 2 Sensor 2 |
|
2 |
TAN/WHT |
1669 |
HO2S Signal Low bank 1 Sensor 2 |
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3 |
TAN |
800 |
Serial Data (UART) |
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4 |
RED |
631 |
CMP Sensor 12V input Pin "C" |
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5 |
TAN |
1667 |
HO2S Signal Low bank 2 Sensor 1 |
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6 |
TAN/WHT |
1653 |
HO2S Signal Low bank 1 Sensor 1 |
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7 |
RED/BLK |
380 |
AC Press. Sensor Signal Pin "C" |
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8 |
TAN |
472 |
IAT Sensor Signal In Pin "B" |
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9 |
BRN |
1456 |
EGR Pintle Position Input Pin "C" |
|
10 |
PPL |
30 |
Fuel level Input Signal |
| 11 | GRA | 23 | Generator F-Terminal |
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12 |
DK BLU |
417 |
TPS Signal Input Pin "C" |
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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 |
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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 |
