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Home >> Pontiac >> 2009 >> G6 Base, 2D Coupe >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 2.4L - DTC P0351 To DTC P0650 >> DTC P0351-P0354 >> Circuit/System Testing
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the affected ignition coil/module.
  2. Ignition OFF for 90 seconds, disconnect the ECM connector X2.
  3. Test for an open, a high resistance, a short to ground and for a short to voltage between the ignition coil/module IC circuit terminal 3 or C and the appropriate ECM connector X2 terminal listed below:
    • IC 1 circuit: terminal 22
    • IC 2 circuit: terminal 26
    • IC 3 circuit: terminal 23
    • IC 4 circuit: terminal 24
    • If a fault is found, repair the circuit as needed.
  4. Connect the ECM.
  5. Exchange the affected ignition coil/module with the ignition/coil module of a good cylinder.
  6. Start the engine and observe the scan tool.
    • If the DTC or the misfire transfers with the suspect ignition/coil module, replace as needed.
    • If the DTC or the misfire does not transfer with the suspect ignition/coil module, replace the ECM.
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