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Circuit/System Verification

    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 the T6 Power Inverter Module or the T12 Transmission.
  2. Disconnect the X5 harness connector at the T6 Power Inverter Module.
  3. Test for infinite resistance between each of the AC circuit terminals listed below and ground for each phase of the G5 Transmission Fluid Pump - Electric/Auxiliary:
    • Terminal 1 phase U
    • Terminal 2 phase V
    • Terminal 3 phase W
    • If less than infinite resistance 
    1. Disconnect the harness connector at the G5 Transmission Fluid Pump - Electric/Auxiliary.
    2. Test for infinite resistance between each of the AC circuit terminals listed below and ground for each phase of the G5 Transmission Fluid Pump - Electric/Auxiliary:
      • X5 terminal 1 phase U
      • X5 terminal 2 phase V
      • X5 terminal 3 phase W
      • If less than infinite resistance

        Replace the Drive Motor Power Inverter Module 3-Phase Cable.

      • Go to next step: If infinite resistance
    3. Replace the G5 Transmission Fluid Pump - Electric/Auxiliary.
    • Go to next step: If infinite resistance 
  4. Verify DTC P1E39 does not set.
    • If the DTC sets 
    1. Perform each of the operations listed below one at a time until the fault is corrected.
      1. Verify the T6 Power Inverter Module has the latest calibration in Calibration Information.
        • If the T6 Power Inverter Module does not have the latest calibration, program the T6 power inverter module.
        • Go to next step: If the T6 Power Inverter Module has the latest calibration
      2. Replace the T6 Power Inverter Module.
      3. Replace the G5 Transmission Fluid Pump - Electric/Auxiliary.
    2. Repeat the DTC check.
    • Go to next step: If the DTC does not set 
  5. All OK
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