For 1990-2009 cars

Table 1: | PCM Connector C1 (Back View)
Table 2: | PCM Connector C2 (Back View)
Table 3: | PCM Connector C3 (Back View)

#### PCM Connector C1 (Back View)

Connector Part Information |

• | 1.8L VIN 8

• | 26 Pin Connector C1

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
C1-1 | BLK/WHT | -- | Ignition Positive Voltage (4-spd. A/T only)
C1-2 | -- | -- | Not used
C1-3 | -- | -- | Not used
C1-4 | BLK | -- | Crankshaft Position Signal
C1-5 | BLK | -- | Camshaft Position Signal
C1-6 | BLU/RED | -- | Power Steering Pressure Signal
C1-7 | RED | -- | EVAP Pressure Switching Solenoid Control
C1-8 | BLU/BLK | -- | EVAP Canister Purge Solenoid Valve Control
C1-9 | -- | -- | Not used
C1-10 | BLK/BLU | -- | IAC Open Control
C1-11 | BLK/RED | -- | Fuel Injector #2 Control
C1-12 | YEL | -- | Fuel Injector #1 Control
C1-13 | BRN | -- | Ground
C1-14 | BRN | -- | Ground
C1-15 | -- | -- | Not used
C1-16 | BLU/YEL | -- | Ignition Fail-Safe Input
C1-17 | WHT | -- | CMP and CKP Sensor Ground
C1-18 | -- | -- | Not used
C1-19 | RED/BLU | -- | Ignition Trigger Signal 2
C1-20 | YEL/GRN | -- | Ignition Trigger Signal 1
C1-21 | BLU/YEL | -- | TCC Solenoid Control (4-spd. A/T only)
C1-22 | BRN/YEL | -- | Shift Solenoid #2 Control (4-spd. A/T only)
C1-23 | PPL | -- | Shift Solenoid #1 Control (4-spd. A/T only)
C1-24 | BLK | -- | Fuel Injector #4 Control
C1-25 | WHT | -- | Fuel Injector #3 Control
C1-26 | BRN | -- | Ground

#### PCM Connector C2 (Back View)

Connector Part Information |

• | 1.8L VIN 8

• | 16 Pin Connector C2

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
C2-1 | YEL | -- | Reference Voltage
C2-2 | LT GRN/RED | -- | MAP Input
C2-3 | YEL/BLK | -- | IAT Input
C2-4 | WHT | -- | ECT Input
C2-5 | RED | -- | HO2S 2 Signal Input
C2-6 | WHT | -- | HO2S 1 Signal Input
C2-7 | BLU | -- | Fuel Tank Pressure Sensor Input
C2-8 | PNK | -- | HO2S 1 Heater Control
C2-9 | BRN | -- | Sensor Ground
C2-10 | -- | -- | Not used
C2-11 | LT GRN | -- | TP Input
C2-12 | RED/WHT | -- | O/D Cut Signal (4-spd. A/T only)
C2-13 | BLK | -- | Knock Input
C2-14 | PNK | -- | HO2S 2 Heater Control
C2-15 | BLU/WHT | -- | Diagnostic Request
C2-16 | BRN | -- | Ground

#### PCM Connector C3 (Back View)

Connector Part Information |

• | 1.8L VIN 8

• | 22 Pin Connector C3

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
C3-1 | RED/WHT | -- | Battery Positive Voltage
C3-2 | BLK | -- | Idle Up Signal (Defoggers)
C3-3 | BLU/WHT | -- | Idle Signal Control (Cruise Control)
C3-4 | GRN/WHT | -- | Brake Signal
C3-5 | RED/YEL | -- | MIL Control
C3-6 | -- | -- | Not used
C3-7 | -- | -- | Not used
C3-8 | BLK | -- | Engine Speed Output
C3-9 | PPL/WHT | -- | VSS Input
C3-10 | YEL/RED | -- | A/C ON Signal
C3-11 | BLK/WHT | -- | Crank Signal
C3-12 | BLK | -- | Ignition Positive Voltage
C3-13 | GRN | -- | Idle Up Signal (Taillights)
C3-14 | GRN/RED | -- | Circuit Opening Relay
C3-15 | -- | -- | Not used
C3-16 | WHT | -- | Serial Data Line
C3-17 | RED/BLK | -- | R Position Signal (4-spd. A/T only)
C3-18 | LT GRN/RED | -- | 2 Position Signal (4-spd. A/T only)
C3-19 | LT GRN/BLK | -- | L Position Signal (4-spd. A/T only)
C3-20 | -- | -- | Not used
C3-21 | RED/BLU | -- | A/C Cutout Control
C3-22 | LT GRN | -- | O/D On/Off Signal (4-spd. A/T only)