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Home › Hummer › 2009 › H3 Alpha › Repair and Diagnosis › Engine Performance › System › Engine Controls And Fuel - 5.3L - DTC P0315 To DTC P064A › DTC P0351-P0358 › Circuit/System Verification

Circuit/System Verification

  1. With the engine running, monitor the following ignition control (IC) circuit status parameters with a scan tool:
    • Cylinder 1-8 IC Ckt. Short Gnd Test Status
    • Cylinder 1-8 IC Ckt. Open Test Status
    • Cylinder 1-8 IC Ckt. Short to Volts Test Status
    • Each parameter should display OK.
  2. With the engine running, observe the Misfire Current counters with a scan tool.
    • The counters should not be incrementing.
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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