Circuit/System Testing

Vehicle OFF, disconnect the X175 harness connector at the transmission.
NOTE: If the a/trans wiring harness assembly circuits fail the circuit tests, replace the harness; do not repair.
Vehicle ON.
Test for 7.8-8.6 V between the circuit terminals listed below:
- Terminal 31 and 36
- Terminal 34 and 35
- If less than 7.8 V
1. Vehicle OFF, disconnect the X1 harness connector at the T6 Power Inverter Module.
2. Test for infinite resistance between the circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance
3. Test for less than 2 Ω in the circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the T6 Power Inverter Module.
- If greater than 8.6 V
1. Vehicle OFF, disconnect the X1 harness connector at the T6 Power Inverter Module, Vehicle ON.
2. Test for less than 1 V between the circuit and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - If less than 1 V, replace the T6 Power Inverter Module.
- If between 7.8-8.6 V
Vehicle OFF, disconnect the harness connector at the B228A Drive Motor 1 Position Sensor. Connect the X175 harness connector at the transmission. Vehicle ON.
Test for 7.8-8.6 V between the circuit terminals listed below:
- Terminal A and B
- Terminal C and D
  - If not between 7.8-8.6 V, replace the a/trans wiring harness assembly.
  - If between 7.8-8.6 V, replace the B228A Drive Motor 1 Position Sensor.
Verify DTC P0A3F, P0C52, P0C53, P0C5C or P0C5D is not set.
- If any of the DTCs are set
1. Program the T6 Power Inverter Module.
2. Verify the DTC does not set.
  - If the DTC sets, replace the T6 Power Inverter Module.
  - If the DTC does not set
3. All OK.
- If none of the DTCs are set
All OK.