2000 Pontiac Firebird Trans Am, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE

Powertrain Control Module Connector Terminal Identification (3.1L - Century)

POWERTRAIN CONTROL MODULE CONNECTOR TERMINAL IDENTIFICATION (3.1L - CENTURY) (1)

Connector Terminal No. Wire Color Function
C1 1 BLK Transmission Fluid Temperature Sensor Ground
C1 2 & 3 ..... Not Used
C1 4 LT GRN 1-2 Shift Solenoid Valve Control
C1 5 DK BLU Cooling Fan High Speed Control
C1 6 DK GRN Cooling Fan Low Speed Control
C1 7 BLK Camshaft Position PWM Input Signal
C1 8 PPL/WHT Crankshaft Position 3x Sensor Reference
C1 9 LT BLU/BLK Crankshaft Position 24x Sensor Reference
C1 10 GRY Manifold Absolute Pressure Sensor 5-Volt Reference
C1 11 & 12 ..... Not Used
C1 13 ORG/BLK Engine Coolant Temperature/Manifold Absolute Pressure Sensor Ground
C1 14 & 15 ..... Not Used
C1 16 BLK/WHT Powertrain Control Module Ground
C1 17 BLK Intake Air Temperature Sensor Ground
C1 18 ..... Not Used
C1 19 PPL Ignition Wake-Up Power
C1 20 ORG Battery Positive Voltage
C1 21-27 ..... Not Used
C1 28 TAN/WHT Heated Oxygen Sensor No. 2 Signal Low
C1 29 TAN Heated Oxygen Sensor No. 1 Signal Low
C1 30 PPL Torque Converter Clutch Brake Switch Input
C1 31 BLK EGR Pintle Position Sensor Ground
C1 32 GRY EGR Valve Control
C1 33 DK BLU Knock Sensor Signal
C1 34-37 ..... Not Used
C1 38 LT GRN/WHT Idle Air Control Valve "B" High
C1 39-42 ..... Not Used
C1 43 BLK Fuel Injector No. 1 Control Circuit
C1 44 YEL/BLK 2-3 Shift Solenoid Valve
C1 45 PNK/BLK AIR Solenoid Relay
C1 46 PNK/BLK Fuel Injector No. 3 Control Circuit
C1 47 LT GRN/BLK Fuel Injector No. 2 Control Circuit
C1 48 RED/BLK 3X Reference Low
C1 49-52 ..... Not Used
C1 53 TAN/BLK By-Pass Valve Control
C1 54 WHT Ignition Control
C1 55 DK GRN/WHT Vehicle Speed Sensor Signal Output
C1 56 BLK/WHT Powertrain Control Module Ground
C1 57 BLK/WHT Powertrain Control Module Ground
C1 58 DK GRN Serial Data (Class 2)
C1 59 ..... Not Used
C1 60 BLK/WHT Powertrain Control Module Ground
C1 61 BLK Throttle Position Sensor Ground
C1 62 & 63 ..... Not Used
C1 64 YEL Vehicle Speed Sensor High
C1 65 PPL Vehicle Speed Sensor Low
C1 66 & 67 ..... Not Used
C1 68 YEL Transaxle Range Switch "B"
C1 69 YEL Mass Airflow Sensor Signal
C1 70 & 71 ..... Not Used
C1 72 DK GRN Cruise Control Disable/Inhibit Control
C1 73 BLK/WHT Fuel Injector No. 5 Control Circuit
C1 74 & 75 ..... Not Used
C1 76 DK GRN/WHT EVAP Canister Purge Valve Control
C1 77 & 78 ..... Not Used
C1 79 YEL/BLK Fuel Injector No. 6 Control Circuit
C1 80 BLK A/C Refrigerant Pressure Sensor Ground
C2 1 ..... Not Used
C2 2 WHT EVAP Canister Vent Valve Solenoid Control
C2 3 DK GRN/WHT Fuel Pump Relay Control
C2 4 WHT EGR Valve Ignition Positive Voltage
C2 5 BRN/WHT Malfunction Indicator Light Control
C2 6 ..... Not Used
C2 7 LT BLU/WHT Idle Air Control Valve "A" High
C2 8 & 9 ..... Not Used
C2 10 PPL Heated Oxygen Sensor No. 1 Signal High
C2 11 PPL/WHT Heated Oxygen Sensor No. 2 Signal High
C2 12-15 ..... Not Used
C2 16 WHT Transaxle Range Switch "P"
C2 17 ..... Not Used
C2 18 BLK/WHT Transaxle Range Switch "A"
C2 19 TAN/BLK Engine Oil Pressure Switch Input
C2 20 & 21 ..... Not Used
C2 22 DK GRN/WHT A/C Request Signal
C2 23 PPL Crank Input (Ignition Positive Voltage During Start Only)
C2 24 PNK Ignition Positive Voltage (Run/Start)
C2 25 LT GRN Manifold Absolute Pressure Sensor Signal
C2 26 YEL Engine Coolant Temperature Sensor Signal
C2 27 RED/BLK A/C Refrigerant Pressure Sensor Signal
C2 28 BRN EGR Pintle Position Signal
C2 29 GRY Generator Terminal "F" Monitor
C2 30 GRY EGR 5-Volt Reference "A"
C2 31 & 32 ..... Not Used
C2 33 GRY Throttle Position Sensor 5-Volt Reference "A"
C2 34 GRY Fuel Tank & A/C Pressure Sensor 5-Volt Reference "B"
C2 35 BLK Sensor Ground
C2 36-38 ..... Not Used
C2 39 DK GRN/WHT A/C Compressor Clutch Relay Control
C2 40 & 41 ..... Not Used
C2 42 LT BLU/BLK Fuel Injector No. 4 Control Circuit
C2 43 ..... Not Used
C2 44 LT BLU/BLK Idle Air Control Valve "A" Low
C2 45-48 ..... Not Used
C2 49 LT GRN/BLK Idle Air Control Valve "B" Low
C2 50 TAN Intake Air Temperature Sensor
C2 51-54 ..... Not Used
C2 55 DK GRN Fuel Tank Pressure Sensor Input Signal
C2 56 GRY Transaxle Range Switch "C"
C2 57 ..... Not Used
C2 58 BRN Engine Oil Level Switch Input
C2 59 WHT Cruise Engaged Input (Status)
C2 60 ..... Not Used
C2 61 RED Generator Terminal "L" Control
C2 62-65 ..... Not Used
C2 66 DK BLU Throttle Position Sensor Signal
C2 67 ..... Not Used
C2 68 YEL/BLK Transaxle Fluid Temperature Sensor Signal
C2 69 PPL Fuel Level Sensor Input
C2 70 LT GRN Crankshaft Position Sensor Battery Positive Voltage
C2 71 ..... Not Used
C2 72 RED/WHT Camshaft Position Sensor Battery Positive Voltage
C2 73 BLK Camshaft Position Sensor Ground
C2 74 YEL/BLK Crankshaft Position Sensor Ground
C2 75 BRN AIR Pump Relay Control
C2 76 YEL/BLK Starter Enable Control
C2 77 ..... Not Used
C2 78 BRN Torque Converter Clutch PWM Solenoid Control
C2 79 & 80 ..... Not Used
(1) See Figure.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.