LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Pontiac >> 2009 >> G8 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 3.6L - DTC P0219 To DTC P0700 >> DTC P0650 >> Circuit/System Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Testing

  1. If any other IPC indicators or gages are inoperative, refer to Symptoms - Displays and Gages for further diagnosis.
  2. Ignition OFF, disconnect the ECM harness connectors. Ignition ON, the MIL should not illuminate.
    • If the MIL is illuminated, test the MIL control circuit terminal X2-12 for a short to ground. If the circuit tests normal, replace the IPC.
  3. Ignition ON, connect a 3A fused jumper wire between the MIL control circuit terminal X2-12 and ground. The MIL should illuminate.
    • If the MIL does not illuminate, test the MIL control circuit for a short to voltage, or an open/high resistance. If the circuit tests normal, replace the IPC/bulb.
  4. If all circuits test normal, replace the ECM.
scientia non olet · About LEMON Manuals