Test Description
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 3. Checks the battery positive voltage circuit at the BCM for an open or a short to ground.
- 4. Checks the courtesy lamps supply voltage circuit for a short to ground. If the fuse in the jumper opens, there is a short to ground in the courtesy lamps supply voltage circuit.