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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1697 (Engine Controls And Fuel - 3.6L (LCS) - DTC P0192 To DTC P0629) >> DTC P0351-P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, open the hood to disable the Auto-Stop function.
  2. Ignition ON, verify the scan tool hood position parameter displays Open.
    • If the hood position does not display Open, refer to DTC P254F .
  3. Ignition OFF, disconnect the harness connector at the appropriate ignition coil.
  4. Test for less than 5 Ω between each of the ground circuits listed below and ground.
    • Ignition coil ground circuit terminal 3
    • Ignition coil ground circuit terminal 4
    • If greater than the specified range, test the circuit for an open/high resistance.
  5. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal 2 and ground.
    • If the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, test all the components connected to the ignition voltage circuit and replace as necessary.
  6. Ignition ON, test for 200-400 mV between the IC circuit terminal 1 and ground.
    • If less than the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit/connections test normal, replace the ECM.
    • If greater than the specified range, test the circuit for a short to voltage. If the circuit/connection tests normal, replace the ECM.
  7. If all circuits/connections test normal, replace the ignition coil.
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