Diagnostic Aids
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- A high or low voltage DTC set in multiple modules indicates a concern in the charging system. Refer to Charging System Test
- This DTC may be set by overcharging with a battery charger, or jump by starting.
- Inspect the ground connection G303, and ensure that it is clean and tight.