For 1990-2009 cars

#### Powertrain Control Module Connector C1 (Blue) End View

Connector Part Information |

• | Blue PCM Connector C1

• | 80 Pin Connector

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
1 | -- | -- | Not Used
2 | PPL/WHT | 1572 | 2nd Gear Start Indicator (4L60E only)
3 | -- | -- | Not Used
4 | LT GRN | 1222 | 1 - 2 Shift Solenoid Control
5 | DK BLU | 473 | Cooling Fan 2 and 3 Control
6 | DK GRN | 335 | Cooling Fan Relay 1 Control
7 | BLK | 630 | Camshaft Position Sensor Signal
8 | PPL/WHT | 430 | 3X Reference
9 | LT BLU/BLK | 647 | 18X Reference
10-11 | -- | -- | Not Used
12 | BRN | 718 | ECT Sensor Ground
13 | ORN/BLK | 469 | MAP Sensor Ground
14 | ORN/BLK | 1061 | TAC Serial Data
15 | TAN | 800 | TAC Serial Data
16 | BLK/WHT | 451 | PCM Ground
17 | PPL | 719 | IAT Sensor Ground
18 | -- | -- | Not Used
19 | PNK | 439 | PCM Ignition Feed
20 | ORN | 340 | PCM Battery Feed
21 | -- | -- | Not Used
22 | PNK | 1224 | Transmission Range A Input (4L60E only)
23-26 | -- | -- | Not Used
27 | TAN/WHT | 1653 | Bank 1 HO2S 1 Low
28 | GRY | 1981 | Bank 1 HO2S 3 Low
29 | TAN | 1667 | Bank 2 HO2S 1 Low
30 | PPL | 420 | TCC Brake Switch Signal (4L60E only)
31 | BLK | 552 | Sensor Ground (EGR)
32 | GRY | 435 | EGR Valve Ground
33 | DK/BLU | 496 | Bank 1 Knock Sensor Signal
34 | LT/BLU | 1876 | Bank 2 Knock Sensor Signal
35-42 | -- | -- | Not Used
43 | YEL/BLK | 846 | Injector Control Cylinder #6
44 | YEL/BLK | 1223 | 2 - 3 Shift Solenoid Control (4L60E only)
45 | -- | -- | Not Used
46 | LT BLU/BLK | 844 | Injector Control Cylinder #4
47 | BLK/WHT | 845 | Injector Control Cylinder #5
48 | RED/BLK | 453 | Reference Low
49-52 | -- | -- | Not Used
53 | TAN/BLK | 424 | Bypass
54 | WHT | 423 | Ignition Control (IC)
55 | DK GRN/WHT | 817 | VSS Output
56 | BLK/WHT | 451 | PCM Ground
57 | BLK/WHT | 451 | PCM Ground
58 | -- | -- | Not Used
59 | DK GRN | 1049 | Class 2 Serial Data
60 | BLK/WHT | 451 | PCM Ground
61-63 | -- | -- | Not Used
64 | YEL | 400 | VSS High
65 | PPL | 401 | VSS Low
66-68 | -- | -- | Not Used
69 | YEL | 492 | Mass Air Flow Signal
70 | DK BLU | 229 | Theft Deterrent Fuel Enable
71 | ORG/BLK | 463 | Requested Torque Input
72 | -- | -- | Not Used
73 | LT GRN/BLK | 1745 | Injector Control Cylinder #2
74-75 | -- | -- | Not Used
76 | DK GRN/WHT | 428 | EVAP Canister Purge Control
77-78 | -- | -- | Not Used
79 | BLK | 1744 | Injector Control Cylinder #1
80 | -- | -- | Not Used

#### Powertrain Control Module Connector C2 (Clear) End View

Connector Part Information |

• | Clear PCM Connector C2

• | 80 Pin Connector

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
1 | -- | -- | Not Used
2 | WHT | 1310 | EVAP Canister Vent Valve Control
3 | DK GRN/WHT | 465 | Fuel Pump Relay Control
4 | LT BLU | 697 | EGR Valve Control
5 | BRN/WHT | 419 | MIL Control
6-7 | -- | -- | Not Used
8 | WHT | 121 | Engine Speed Output
9 | TAN/BLK | 464 | Delivered Torque Output
10 | PPL | 1666 | Bank 2 HO2S 1 Signal
11 | DK BLU | 1980 | Bank 1 HO2S 3 Signal
12 | PPL/WHT | 1665 | Bank 1 HO2S 1 Signal
13-15 | -- | -- | Not Used
16 | ORN/BLK | 434 | PNP Switch Signal
17 | RED | 1226 | Transmission Range C Input (4L60E only)
18 | GRY | 48 | Cruise Control/Clutch Anticipate Switch
19-20 | -- | -- | Not Used
21 | BRN/WHT | 1571 | 2nd Gear Start Signal
22 | DK GRN/WHT | 762 | A/C Request Signal
23 | PPL/WHT | 1035 | Crank Signal
24 | BRN | 86 | Cruise Control Release Signal
25 | LT GRN | 432 | MAP Sensor Signal
26 | YEL | 410 | ECT Sensor Signal
27 | RED/BLK | 380 | A/C Refrigerant Pressure Sensor Signal
28 | BRN | 1456 | EGR Pintle Position Signal
29-32 | -- | -- | Not Used
33 | GRY | 598 | 5 Volt Reference A
34 | LT BLU/BLK | 1688 | 5 Volt Reference B
35 | GRY | 720 | A/C Refrigerant Pressure Sensor Ground
36-38 | -- | -- | Not Used
39 | DK GRN/WHT | 459 | A/C Compressor Clutch Relay Control
40-41 | -- | -- | Not Used
42 | PNK/BLK | 1746 | Injector Control Cylinder #3
43-44 | -- | -- | Not Used
45 | RED/BLK | 1228 | Pressure Control Solenoid High (4L60E only)
46 | LT BLU/WHT | 1229 | Pressure Control Solenoid Low (4L60E only)
47 | -- | -- | Not Used
48 | WHT | 687 | 3-2 Shift Solenoid Control (4L60E only)
49 | -- | -- | Not Used
50 | TAN | 472 | Intake Air Temperature Sensor Signal
51-54 | -- | -- | Not Used
55 | DK GRN | 890 | Fuel Tank Pressure Sensor Signal
56 | -- | -- | Not Used
57 | DK BLU | 1225 | Transmission Range B Input (4L60E only)
58 | BRN | 1174 | Engine Oil Level Switch Signal
59-60 | -- | -- | Not Used
61 | RED | 225 | Generator Control
62-67 | -- | -- | Not Used
68 | YEL/BLK | 1227 | Transaxle Fluid Temperature Sensor (4L60E only)
69 | PPL | 1589 | Fuel Level Signal
70-75 | -- | -- | Not Used
76 | DK GRN | 625 | Starter Enable (If Equipped)
77 | -- | -- | Not Used
78 | BRN | 418 | TCC PWM Solenoid Control (4L60E only)
79 | TAN/BLK | 422 | TCC Enable Solenoid Control (4L60E only)
80 | -- | -- | Not Used