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Home >> Pontiac >> 2009 >> G3 Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.6L (LXV) >> Diagnostic Information and Procedures >> DTC P1682 >> Circuit/System Testing
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Circuit/System Testing

  1. Ignition OFF, disconnect the ECM harness connector X1.
  2. Ignition ON, load test for B+ between the ECM harness connector terminal X1-3 and ground.
    • If less than the specified range, remove the EC relay and test the ignition 1 voltage circuit for an open/high resistance. If the circuit tests normal, replace the relay.
  3. Load test for B+ between the ECM harness connector terminal X1-14 and ground.
    • If less than the specified range, repair the ignition 1 voltage circuit for an open/high resistance.
  4. If all circuits test normal, replace the ECM.
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