Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

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.

Verify that DTC P1A1F is not set.
- If the DTC is set, refer to DTC P1A1F or P1A4E .
Ignition OFF, disconnect the X1 harness connector at the drive motor generator power inverter module assembly (PIM).
Ignition ON, verify that the scan tool Contactor System Request Circuit Command parameter indicates 100 percent.
- If not the specified value, test the control circuit terminal 4 for a short to ground. If the circuit tests normal, replace the drive motor generator battery control module.
Connect a 3 A fused jumper wire between the control circuit terminal 4 and ground. Verify that the scan tool Contactor System Request Circuit Command parameter indicates 0 percent.
- If not the specified value, test the control circuit for an open or short to voltage. If the circuit tests normal, replace the drive motor generator battery control module.
If all circuits test normal, replace the drive motor generator power inverter module assembly (PIM).