Circuit/System Verification
WARNING: This page is about a different car, the 2016 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.
- Perform the Battery Inspection/Test .
- Vehicle ON.
- Verify that no DTCs are set that would cause a charging system concern.
- If an applicable DTC is set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If no applicable DTCs are set
- If an applicable DTC is set
- Vehicle OFF.
- Measure and record the C1 Battery voltage at the C1 Battery terminals. The C1 Battery voltage should stabilize within a few minutes of turning the vehicle OFF.
- Vehicle ON, accessories OFF.
- Measure and record the C1 Battery voltage at the C1 Battery terminals. The voltage should be at least 1V greater than the voltage measured previously but less than 15V.
- If not within the specified range
Refer to Circuit/System Testing.
- If within the specified range
- If not within the specified range
- All OK.
NOTE:
To accurately diagnose the charging system, the C1 Battery must be fully charged and capable of passing the Battery Inspection/Test.