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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 2003 (Hybrid Controls - 3.6L (Hp5) - DTC P0AF7 To DTC P16F6) >> DTC P0C01 or P0C04 >> 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.
    WARNING: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.
    The High Voltage Disabling procedure will perform the following tasks:
    • Identify how to disable high voltage.
    • Identify how to test for the presence of high voltage.
    • Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.

    Failure to follow the procedures exactly as written may result in serious injury or death.
  1. Perform the High Voltage Disabling procedure for servicing at the drive motor generator control module cable connections.
  2. Remove the 3-phase cable assembly from the PIM distribution box. Refer to Generator Control Module 3-Phase Cable Assembly Replacement .
  3. Test the resistance to ground for each phase of the applicable drive motor generator by measuring between the following points with a DMM.
    • Phase U terminal and chassis ground
    • Phase V terminal and chassis ground
    • Phase W terminal and chassis ground
    • If less than infinite is measured, continue with Circuit/System Testing.
    • If infinite resistance is measured, replace the drive motor generator stator assembly that corresponds to the set DTC and retest for DTCs. If DTC P0C01 or P0C04 still resets, replace the PIM.
  4. Remove the 3-phase cable assembly from the transmission. Refer to Generator Control Module 3-Phase Cable Assembly Replacement . Ensure the terminals are not contacting chassis ground.
  5. Retest the resistance to ground for each phase of the 3-phase cable. Measure between the following points with a DMM.
    • Phase U terminal and the shield ground
    • Phase V terminal and the shield ground
    • Phase W terminal and the shield ground
    • If infinite resistance is measured, replace the applicable drive motor generator stator assembly.
    • If less than infinite is measured, replace the generator control module 3-phase cable assembly.
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