Circuit/System Testing
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, remove the F103 drive motor generator control module sight shield. Refer to Drive Motor Generator Control Module Sight Shield Replacement .
- Disconnect the T6 drive motor generator power inverter module X1 connector.
- Ignition ON, verify that a test lamp illuminates between the control module voltage circuit terminal 20 and ground.
- If the test lamp illuminates, replace the T6 drive motor generator power inverter module.
- Inspect for an external condition that may have caused a high 12 V circuit condition such as a battery charger.