For 1990-2009 cars

Table 1: | Back View Of the PCM Connector C1 (Manual and 3-Speed A/T Only)
Table 2: | Back View Of the PCM Connector C2 (Manual and 3-Speed A/T Only)
Table 3: | Back View Of the PCM Connector C3 (Manual and 3-Speed A/T Only)
Table 4: | Back View Of the PCM Connector C1 (4-Speed A/T Only)
Table 5: | Back View Of the PCM Connector C2 (4-Speed A/T Only)
Table 6: | Back View Of the PCM Connector C3 (4-Speed A/T Only)
Table 7: | Back View Of the PCM Connector C4 (4-Speed A/T Only)

#### Back View Of the PCM Connector C1 (Manual and 3-Speed A/T Only)

Connector Part Information |

• | Manual and 3-Speed A/T ONLY

• | PCM Connector C1

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
C1-1 | WHT | -- | Battery Positive Voltage
C1-2 | BLK/YEL | -- | Starter Signal
C1-3 | PPL | -- | Duty Check Output
C1-4 | ORN | -- | Ignition Control Module Output
C1-5 | PNK | -- | Fuel Pump Relay Control
C1-6 | BLU/RED | -- | Test Switch Signal
C1-7 | YEL | -- | VSS Input
C1-8 | -- | -- | Blank
C1-9 | YEL/BLK | -- | A/C ON Signal
C1-10 | BLU | -- | Main Relay Control
C1-11 | -- | -- | Blank
C1-12 | BLU/BLK | -- | Ignition Positive Voltage
C1-13 | BLU/BLK | -- | Ignition Positive Voltage
C1-14 | PPL/YEL | -- | MIL Control
C1-15 | LT GRN/WHT | -- | EGR Solenoid Vacuum Control
C1-16 | WHT/YEL | -- | TCC Relay Control (M/T and 3-Speed
C1-17 | BLU/YEL | -- | Diagnostic Request Signal
C1-18 | GRN/RED | -- | EGR Bypass Valve Control
C1-19 | BLU/ORN | -- | Power Steering Pressure Signal
C1-20 | PNK/WHT | -- | ABS Idle-Up Signal
C1-21 | -- | -- | Blank
C1-22 | BLK/RED | -- | Crank Signal (3-Speed A/T Only)

#### Back View Of the PCM Connector C2 (Manual and 3-Speed A/T Only)

Connector Part Information |

• | Manual and 3-Speed A/T ONLY

• | PCM Coonector C2

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
C2-1 | BRN/RED | -- | Fuel Tank Pressure Sensor Input
C2-2 | WHT | -- | HO2S 1 Signal
C2-3 | YEL/RED | -- | Fuel Level Input
C2-4 | RED/YEL | -- | ECT Sensor Input
C2-5 | GRY/RED | -- | Referance Voltage
C2-6 | RED/BLK | -- | IAT Sensor Input
C2-7 | -- | -- | Blank
C2-8 | -- | -- | Blank
C2-9 | GRY/BLK | -- | MAF Sensor Signal
C2-10 | YEL | -- | HO2S 2 Signal
C2-11 | GRY | -- | TP Sensor Input
C2-12 | -- | -- | Blank
C2-13 | BRN/YEL | -- | MAP Sensor Input
C2-14 | BLU/WHT | -- | CTP Switch Signal
C2-15 | -- | -- | Blank
C2-16 | -- | -- | Blank

#### Back View Of the PCM Connector C3 (Manual and 3-Speed A/T Only)

Connector Part Information |

• | Manual and 3-Speed A/T ONLY

• | PCM Connector C3

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
C3-1 | BLK/ORN | -- | Ground
C3-2 | BLK/ORN | -- | Ground
C3-3 | WHT | -- | CMP Sensor
C3-4 | -- | -- | Blank
C3-5 | -- | -- | Blank
C3-6 | GRN/WHT | -- | EVAP Canister Vent Valve Control
C3-7 | GRN/BLU | -- | EVAP Tank Pressure Control Solenoid Vacuum Valve Control
C3-8 | -- | -- | Blank
C3-9 | PNK/WHT | -- | HO2S 2 Heater Control
C3-10 | -- | -- | Blank
C3-11 | RED | -- | Fuel Injector #1 Control
C3-12 | LT GRN/BLK | -- | IAC Valve Control
C3-13 | WHT/GRN | -- | Fuel Injector #3 Control
C3-14 | BLK/GRN | -- | PCM Ground
C3-15 | BRN | -- | Sensor Ground
C3-16 | BLK | -- | Ignition Reference High (CKP Sensor)
C3-17 | WHT | -- | Ignition Reference Low (CKP Sensor)
C3-18 | -- | -- | Blank
C3-19 | -- | -- | Blank
C3-20 | -- | -- | Blank
C3-21 | GRN/WHT | -- | Brake Light Switch (A/T Only)
C3-22 | PPL/GRN | -- | Serial Data Output
C3-23 | PNK | -- | HO2S Sensor 1 Heater Control
C3-24 | LT GRN/RED | -- | Fuel Injector #2 Control
C3-25 | LT GRN/YEL | -- | EVAP Canister Purge Valve Control
C3-26 | WHT/BLK | -- | Fuel Injector #4 Control

#### Back View Of the PCM Connector C1 (4-Speed A/T Only)

Connector Part Information |

• | 4-Speed A/T ONLY

• | PCM Connector C1

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
C1-1 | -- | -- | Blank
C1-2 | BLK/YEL | -- | Starter Signal
C1-3 | WHT | -- | CMP Sensor Input
C1-4 | YEL | -- | VSS Input
C1-5 | YEL/BLK | -- | A/C ON Signal
C1-6 | BLU/YEL | -- | Diagnostic Requeat Signal
C1-7 | -- | -- | Blank
C1-8 | WHT | -- | HO2S 1 Signal
C1-9 | GRY/BLK | -- | MAF Signal
C1-10 | GRY/RED | -- | Reference Voltage
C1-11 | BRN | -- | Sensor Ground
C1-12 | -- | -- | Blank
C1-13 | GRN/WHT | -- | Brake Signal
C1-14 | PNK/GRN | -- | O/D Cut Signal
C1-15 | BLU/WHT | -- | CTP Switch Signal
C1-16 | BLU/ORN | -- | Power Steering Pressure Signal
C1-17 | PNK/WHT | -- | ABS Idle-Up Signal
C1-18 | BLU/RED | -- | Test Switch Signal
C1-19 | RED/BLK | -- | IAT Input
C1-20 | GRY | -- | Throttle Position Input
C1-21 | RED/YEL | -- | ECT Input
C1-22 | -- | -- | Blank

#### Back View Of the PCM Connector C2 (4-Speed A/T Only)

Connector Part Information |

• | 4-Speed A/T ONLY

• | PCM Connector C2

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
C2-1 | YEL | -- | HO2S 2 Signal
C2-2 | BRN/YEL | -- | MAP Input
C2-3 | YEL/RED | -- | Fuel Level Input
C2-4 | YEL/RED | -- | Fuel Gauge Ground
C2-5 | GRN/WHT | -- | EVAP Canister Vent Valve Control
C2-6 | PNK/WHT | -- | HO2S 2 Heater Control
C2-7 | BRN/RED | -- | Fuel Tank Pressure Input
C2-8 | BLK | -- | Ignition Reference High
C2-9 | WHT | -- | Ignition Reference Low
C2-10 | -- | -- | Blank
C2-11 | GRN/RED | -- | EGR Bypass Valve Control
C2-12 | GRN/BLU | -- | EVAP Tank Pressure Control Solenoid Vacuum Valve Control

#### Back View Of the PCM Connector C3 (4-Speed A/T Only)

Connector Part Information |

• | 4-Speed A/T ONLY

• | PCM Connector C3

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
C3-1 | WHT | -- | VSS Signal High
C3-2 | ORN/GRN | -- | Overdrive Switch Signal
C3-3 | ORN/WHT | -- | 4WD Low Signal
C3-4 | ORN | -- | Shift Mode Signal
C3-5 | RED/YEL | -- | Lights ON Signal
C3-6 | WHT/BLK | -- | O/D OFF Indicator
C3-7 | PNK | -- | Power Indicator
C3-8 | GRN/RED | -- | Shift Solenoid No. 2 Control
C3-9 | BLK | -- | VSS Signal Low
C3-10 | GRN/BLU | -- | L Position Signal
C3-11 | GRN/RED | -- | 2 Position Signal
C3-12 | GRN | -- | D Position Signal
C3-13 | ORN/BLU | -- | N Position Signal
C3-14 | RED | -- | R Position Signal
C3-15 | GRN/ORN | -- | Shift Solenoid No. 1 Control
C3-16 | GRN/YEL | -- | TCC Solenoid Control

#### Back View Of the PCM Connector C4 (4-Speed A/T Only)

Connector Part Information |

• | 4-Speed A/T ONLY

• | PCM Connector C4

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
C4-1 | BLU | -- | Main Relay Control
C4-2 | BLK/ORN | -- | Ground
C4-3 | BLU/BLK | -- | Ignition Positive Voltage
C4-4 | WHT | -- | Battery Positive Voltage
C4-5 | PPL | -- | Duty Check Output
C4-6 | ORN | -- | Ignition Control Module Output
C4-7 | GRN/WHT | -- | EGR Solenoid Vacuum Valve Control
C4-8 | -- | -- | Blank
C4-9 | PNK | -- | Fuel Pump Control
C4-10 | PNK/BLU | -- | Throttle Position Put(4 Speed A/T Only)
C4-11 | RED | -- | Fuel Injector #1 Control
C4-12 | LT GRN/BLK | -- | IAC Valve Control
C4-13 | WHT/GRN | -- | Fuel Injector #3 Control
C4-14 | BLK/ORN | -- | Ground
C4-15 | BLK/GRN | -- | Ground
C4-16 | BLU/BLK | -- | Ignition Positive Voltage
C4-17 | PPL/GRN | -- | Serial Data Output
C4-18 | -- | -- | Blank
C4-19 | PNK | -- | HO2S 1 Heater Control
C4-20 | -- | -- | Blank
C4-21 | -- | -- | Blank
C4-22 | -- | -- | Blank
C4-23 | PPL/YEL | -- | MIL Control
C4-24 | LT GRN/RED | -- | Fuel Injector #2 Control
C4-25 | GRN/YEL | -- | EVAP Canister Purge Valve Control
C4-26 | WHT/BLK | -- | Fuel Injector #4 Control