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Powertrain Control Module (PCM) Connector End Views

Back View of the PCM Connector C1

GM477054Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 2.0L VIN C Powertrain
  • 35 Pin Gray Connector C1 with Blue Terminal Secondary Lock Insert
Pin Wire Color Function
C1-1 GRY/RED Fuel Tank Pressure Sensor Reference Voltage
C1-2 WHT Battery Positive Voltage
C1-3 PNK/GRN HO2S 2 Heater Control
C1-4 GRY TP Signal (for cruise control, if equipped)
C1-5 - Not Used
C1-6 BRN Tachometer
C1-7 PPL/YEL MIL Control
C1-8 GRY/WHT A/C Cut-Out Control
C1-9 BLU Main Relay Control
C1-10 GRY/GRN Fuel Vapor Temperature Sensor Input
C1-11 TO C1-12 - Not Used
C1-13 PPL/GRN Serial Data Output
C1-14 - Not Used
C1-15 BLK/ORN Electrical Load Diode Signal (rear defogger switch)
C1-16 PNK/WHT HVAC Blower Idle-Up Signal
C1-17 YEL/BLK A/C Idle-Up Signal
C1-18 - Not Used
C1-19 ORN/BLK 4WD Indicator Lamp Control
C1-20 WHT/BLK O/D Indicator Lamp Control (A/T only)
C1-21 GRY/BLU Power/Normal Indicator Lamp Control (A/T only)
C1-22 YEL/BLU A/C Condenser Fan Relay Control
C1-23 WHT/GRN Fuel Pump Relay Control
C1-24 GRY/YEL HO2S 2 Sensor Ground
C1-25 - Not Used
C1-26 RED/GRN HO2S 2 Signal
C1-27 BRN/RED Fuel Tank Pressure Sensor Input
C1-28 BLU/WHT Fuel Tank Level Sensor Input
C1-29 - Not Used
C1-30 PNK/BLK EBCM Idle-Up Signal (ABS only)
C1-31 ORN/BLU Shift Mode Input (A/T only)
C1-32 RED/YEL Tail Lamp Idle-Up Signal (A/T only)
C1-33 YEL/RED O/D Switch Signal (A/T only)
C1-34 GRN/WHT Brake Switch Signal
C1-35 PNK/BLU O/D Cut Signal (from cruise control servo, if equipped)
Back View Of the PCM Connector C2

GM477055Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 2.0L VIN C Powertrain
  • 26 Pin Gray Connector C2 with Blue Terminal Secondary Lock Insert
Pin Wire Color Function
C2-1 LT BLU IAT Sensor Input
C2-2 ORN/BLK ECT Sensor Input
C2-3 BLK Knock Sensor Input
C2-4 BLU/BLK Ignition Positive Voltage
C2-5 PPL/GRN MAF Sensor Ground
C2-6 BLK/GRN Ground
C2-7 BLU/ORN PSP Switch Idle-Up Signal
C2-8 RED/WHT MAP Sensor Input
C2-9 RED/GRN TP Sensor Input
C2-10 PPL/WHT MAF Sensor Input
C2-11 RED HO2S 1 Signal
C2-12 Bare HO2S 1 Sensor Shield Ground
C2-13 GRY/RED TP Sensor Reference Voltage
C2-14 WHT/RED MAP Sensor Reference Voltage
C2-15 BLU/BLK Ignition Positive Voltage
C2-16 - Not Used
C2-17 BLK/BLU Ground
C2-18 BLK/YEL Crank Signal
C2-19 - Not Used
C2-20 BLK/WHT Ignition Positive Voltage
C2-21 GRY/YEL Sensor Ground
C2-22 GRY/YEL HO2S 1 Sensor Ground
C2-23 to C2-24 - Not Used
C2-25 BLU/WHT Sensor Ground
C2-26 PPL/RED CMP Sensor Ground
Back View Of the PCM Connector C3

GM477056Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 2.0L VIN C Powertrain
  • 28 Pin Connector C3 with Orange Terminal Secondary Lock Insert
Pin Wire Color Function
C3-1 GRN/RED Shift Solenoid #2 Control
C3-2 GRN Shift Solenoid #1 Control
C3-3 TO C3-7 - Not Used
C3-8 GRN/YEL TCC Solenoid Control
C3-9 - Not Used
C3-10 BLU/GRN A/T Input Shaft Speed Sensor Signal Low
C3-11 BLU/YEL A/T Input Shaft Speed Sensor Signal High
C3-12 to C3-14 - Not Used
C3-15 YEL/GRN TR Switch D Position Signal
C3-16 ORN/BLU TR Switch N Position Signal
C3-17 RED TR Switch R Position Signal
C3-18 ORN/GRN TR Switch P Position Signal
C3-19 - Not Used
C3-20 BLK A/T Output Shaft Speed Sensor Shielded Ground
C3-21 BLK A/T Input Shaft Speed Sensor Shielded Ground
C3-22 ORN A/T Output Shaft Speed Sensor Signal Low
C3-23 WHT A/T Output Shaft Speed Sensor Signal High
C3-24 to C3-25 - Not Used
C3-26 ORN/WHT 4WD Low Signal
C3-27 GRN/BLU TR Switch L Position Signal
C3-28 GRN/ORN TR Switch 2 Position Signal
Back View Of the PCM Connector C4

GM477057Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 2.0L VIN C Powertrain
  • 30 Pin Gray Connector C4 with Green Terminal Secondary Lock Insert
Pin Wire Color Function
C4-1 PNK/BLK Fuel Injector #2 Control
C4-2 PNK Fuel Injector #1 Control
C4-3 LT GRN/BLK IAC Valve Coil Control
C4-4 GRY HO2S 1 Heater Control
C4-5 PPL/RED EVAP Canister Vent Solenoid Control
C4-6 GRN/WHT EVAP Tank Pressure Control Solenoid Valve Control - if equipped
C4-7 RED 4WD Actuator Control
C4-8 PNK/BLU Fuel Injector #4 Control
C4-9 PNK/GRN Fuel Injector #3 Control
C4-10 PPL/YEL IAC Valve Coil Control
C4-11 GRY/BLU IAC Valve Coil Control
C4-12 PPL/BLK IAC Valve Coil Control
C4-13 LT GRN/RED EGR Valve Coil Control
C4-14 LT GRN/YEL EGR Valve Coil Control
C4-15 LT GRN/WHT EGR Valve Coil Control
C4-16 LT GRN EGR Valve Coil Control
C4-17 GRN/BLK EVAP Canister Purge Valve Control
C4-18 BLK/ORN 4WD Signal
C4-19 WHT/BLU CKP Sensor Signal High
C4-20 ORN/BLU CKP Sensor Signal Low
C4-21 BRN/YEL Ignition Coil #4 Control
C4-22 BRN/WHT Ignition Coil #3 Control
C4-23 BRN/BLK Ignition Coil #2 Control
C4-24 BRN Ignition Coil #1 Control
C4-25 BLU/YEL VSS Signal
C4-26 YEL/BLU CMP Sensor Signal
C4-27 PNK 4WD Actuator Control
C4-28 BLK/BLU Ground
C4-29 BLK/GRN DLC Ground
C4-30 Bare CKP Sensor Shielded Ground
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