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.
- 2. Determines that the fault is current when the for lamp relay parameter does not change state.
- 3. Verifies that there is a short to battery voltage in the fog lamp relay control circuit or related circuits. Not detecting a short to battery voltage would indicate that the fog lamp relay is internally shorted to battery voltage.
- 4. Test for short to battery voltage internal to the BCM.
- 5. Test for short to battery voltage on the fog lamps control circuit.