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Powertrain Control Module Connector Terminal Identification

Fig 1: Identifying Powertrain Control Module Harness Connector Terminals
G99A03051Courtesy of GENERAL MOTORS CORP.
POWERTRAIN CONTROL MODULE CONNECTOR TERMINAL IDENTIFICATION (1.6L)

Connector/Terminal No. (1) Wire Color Function
C1/1 GRY/RED Fuel Tank Pressure Sensor Reference Voltage
C1/2 WHT Battery Positive Voltage
C1/3 PNK/GRN HO2S Heater Control
C1/4 GRY Idle 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
C1/10-12 ..... Not Used
C1/13 PPL/GRN Serial Data Output
C1/14 ..... Not Used
C1/15 BLK/ORG Electrical Load Diode Signal
C1/16 PNK/WHT HVAC Blower Idle-Up Signal
C1/17 YEL/BLK A/C Idle-Up Signal
C1/18 ..... Not Used
C1/19 ORG/BLK 4WD Indicator Light (If Equipped)
C1/20 & 21 ..... Not Used
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 ABS Idle-Up Signal (If Equipped)
C1/31-33 ..... Not Used
C1/34 GRN/WHT Brake Switch Signal
C1/35 PNK/BLU O/D Cut-Signal From Cruise Control (If Equipped)
C2/1 LT BLU IAT Sensor Input
C2/2 ORG/BLK ECT Sensor Input
C2/3 ..... Not Used
C2/4 BLU/BLK Ignition Positive Voltage
C2/5 PPL/GRN MAF Sensor Ground
C2/6 BLK/GRN Ground
C2/7 BLU/ORG 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 ..... 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 TP Sensor Ground
C2/22 BLU/RED MAP Sensor Ground
C2/23 BLU ECT Sensor Ground
C2/24 GRY/YEL HO2S 1 Sensor Ground
C2/25 BLU/WHT IAT Sensor Ground
C2/26 PPL/RED CMP Sensor Ground
C4/1 PNK/BLK Fuel Injector No. 2 Control
C4/2 PNK Fuel Injector No. 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
C4/7 RED 4WD Actuator Control
C4/8 PNK/BLU Fuel Injector No. 4 Control
C4/9 PNK/GRN Fuel Injector No. 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/ORG 4WD Signal
C4/19 WHT/BLU CKP Sensor Signal High
C4/20 ORG/BLU CKP Sensor Signal Low
C4/21 BRN/YEL Ignition Coil No. 4 Control
C4/22 BRN/WHT Ignition Coil No. 3 Control
C4/23 BRN/BLK Ignition Coil No. 2 Control
C4/24 BRN Ignition Coil No. 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 ..... CKP Sensor Shielded Ground
(1) See Fig 1 .
POWERTRAIN CONTROL MODULE CONNECTOR TERMINAL IDENTIFICATION (2.0L)

Connector/Terminal No. (1) Wire Color Function
C1/1 GRY/RED Fuel Tank Pressure Sensor Reference Voltage
C1/2 WHT Battery Positive Voltage
C1/3 PNK/GRN HO2S Heater Control
C1/4 GRY Idle 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
C1/10-12 ..... Not Used
C1/13 PPL/GRN Serial Data Output
C1/14 ..... Not Used
C1/15 BLK/ORG Electrical Load Diode Signal
C1/16 PNK/WHT HVAC Blower Idle-Up Signal
C1/17 YEL/BLK A/C Idle-Up Signal
C1/18 ..... Not Used
C1/19 ORG/BLK 4WD Indicator Light (If Equipped)
C1/20 WHT/BLK O/D Indicator Light Control (A/T)
C1/21 GRY/BLU Power/Normal Indicator Light Control (A/T)
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)
C1/31 ORG/BLU Shift Mode Input (A/T)
C1/32 RED/YEL Taillight Idle-Up Signal (A/T)
C1/33 YEL/RED O/D Switch Signal (A/T)
C1/34 GRN/WHT Brake Switch Signal
C1/35 PNK/BLU Cruise Control Signal (If Equipped)
C2/1 LT BLU IAT Sensor Input
C2/2 ORG/BLK ECT Sensor Input
C2/3 ..... Not Used
C2/4 BLU/BLK Ignition Positive Voltage
C2/5 PPL/GRN MAF Sensor Ground
C2/6 BLK/GRN Ground
C2/7 BLU/ORG 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 ..... 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 TP Sensor Ground
C2/22 BLU/RED MAP Sensor Ground
C2/23 BLU ECT Sensor Ground
C2/24 GRY/YEL HO2S 1 Sensor Ground
C2/25 BLU/WHT IAT Sensor Ground
C2/26 PPL/RED CMP Sensor Ground
C3/1 GRN/RED Shift Solenoid No. 2 Control
C3/2 GRN Shift Solenoid No. 1 Control
C3/3-7 ..... 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
C3/12-14 ..... Not Used
C3/15 YEL/GRN TR Switch "D" Position Signal
C3/16 ORG/BLU TR Switch "N" Position Signal
C3/17 RED TR Switch "R" Position Signal
C3/18 ORG/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 ORG A/T Output Shaft Speed Sensor Signal Low
C3/23 WHT A/T Output Shaft Speed Sensor Signal High
C3/24 & 25 ..... Not Used
C3/26 ORG/WHT 4WD Low Signal
C3/27 GRN/BLU TR Switch "L" Position Signal
C3/28 GRN/ORG TR Switch "2" Position Signal
C4/1 PNK/BLK Fuel Injector No. 2 Control
C4/2 PNK Fuel Injector No. 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
C4/7 RED 4WD Actuator Control
C4/8 PNK/BLU Fuel Injector No. 4 Control
C4/9 PNK/GRN Fuel Injector No. 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/ORG 4WD Signal
C4/19 WHT/BLU CKP Sensor Signal High
C4/20 ORG/BLU CKP Sensor Signal Low
C4/21 BRN/YEL Ignition Coil No. 4 Control
C4/22 BRN/WHT Ignition Coil No. 3 Control
C4/23 BRN/BLK Ignition Coil No. 2 Control
C4/24 BRN Ignition Coil No. 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 ..... CKP Sensor Shielded Ground
(1) See Fig 1 .
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