Circuit/System Testing
- 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.
- Perform the High Voltage Disabling procedure for servicing the T6 Power Inverter Module or T12 Transmission.
- Disconnect the X8 connector at the T6 Power Inverter Module.
- Test for infinite resistance between the terminals listed below and ground for each phase of the G5 Auxiliary Transmission Fluid Pump:
- Terminal 3 phase U
- Terminal 2 phase V
- Terminal 1 phase W
- If less than infinite resistance
Replace the G5 Auxiliary Transmission Fluid Pump.
- If infinite resistance
- Test for less than 6 Ω between each phase by measuring between the following AC circuit terminals listed below:
- Terminal 1 phase W to Terminal 2 phase V
- Terminal 1 phase W to Terminal 3 phase U
- Terminal 2 phase V to Terminal 3 phase U
- If 6 Ω or greater
Replace the G5 Auxiliary Transmission Fluid Pump.
- If less than 6 Ω
- Replace the T6 Power Inverter Module.
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:
Failure to follow the procedures exactly as written may result in serious injury or death.