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Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
    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.
  2. Remove the 3-phase cable assembly from the K59 starter generator control module.
  3. Test for less than 0.5 ohms at each phase by measuring between the following circuits at the cable with a DMM:
    • Phase U and phase V
    • Phase U and phase W
    • Phase V and phase W
    • If within the specified value 
  4. Inspect the 3-phase drive motor generator battery cable terminal fasteners at the K59 starter generator control module.
    • If any fasteners were loose and no arc-flash damage is present 

      Torque the fasteners and re-assembly the vehicle. Retest for the DTC.

    • If any fasteners were loose and arc-flash damage is present 

      Replace the K59 starter generator control module assembly and the 3-phase drive motor generator battery cable assembly.

    • If not within the specified value 
  5. Disconnect the 3-phase drive motor generator battery cable assembly from the A15 starter generator. Test each cable for continuity from the starter generator connection terminal to the K59 starter generator control module connection terminal.
    • If you measure greater than 0.5 ohms 

      Replace the 3-phase drive motor generator battery cable assembly.

  6. Replace the A15 starter generator and retest for the DTC. If the DTC resets, replace the K59 starter generator control module.
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