Circuit/System Verification
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the headlamp switch is in the AUTO position and the park brake is released.
- Ignition ON, verify DTC B2645 is not set.
- If DTC B2645 is set, refer to DTC B2645 .
- Verify the scan tool BCM Park Lamp Switch parameter is Off.
- If not the specified value, refer to Park, License, and/or Tail Lamps Malfunction .
- Verify the following scan tool BCM parameters are Off.
- Low Beam Switch
- High Beam Switch
- Flash to Pass Switch
- If any of the parameters are not the specified value, refer to Headlamps Malfunction .
- Verify the scan tool BCM Headlamp Off Switch parameter is Inactive.
- If not the specified value, refer to Headlamps Malfunction .
- Verify the scan tool BCM Park Brake Switch parameter is Released.
- If not the specified value, refer to Brake Warning Indicator Malfunction .