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Circuit/System Testing

NOTE:

Perform Circuit/System Verification before Circuit/System Testing.

    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 cable connections.
  2. Remove the T6 Power Inverter Module. Refer to Drive Motor Power Inverter Module Replacement .
  3. Test for infinite resistance between each of the AC circuit terminals listed below and ground for each phase of the appropriate M15 Drive Motor:

    Drive Motor 1

    • X3 Terminal 1 phase U
    • X3 Terminal 2 phase V
    • X3 Terminal 3 phase W

    Drive Motor 2

    • X4 Terminal 1 phase U
    • X4 Terminal 2 phase V
    • X4 Terminal 3 phase W
    • If less than infinite resistance 

      Replace the M15 Drive Motor.

    • Go to next step: If infinite resistance for all AC circuits 
  4. Perform each of the operations listed below one at a time until the fault is corrected.
    1. Replace the T6 Power Inverter Module.
    2. Replace the M15 Drive Motor.
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