Circuit/System Verification
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, observe the scan tool ctsy. lamp actv. reason parameter while pressing and releasing the dome lamp switch. The reading should toggle between OFF and MANUAL.
- If the reading does not change between the commanded states, refer to Dome Lamp Switch Malfunction .
- Observe the scan tool driver door open switch parameter while opening and closing the driver door. The reading should toggle between ACTIVE and INACTIVE.
- If the reading does not change between the commanded states, refer to Door Courtesy Lamp Malfunction - Front .
- Observe the scan tool passenger door open switch parameter while opening and closing the passenger door. The reading should toggle between ACTIVE and INACTIVE.
- If the reading does not change between the commanded states, refer to Door Courtesy Lamp Malfunction - Front Door Open Switch Malfunction - Front.
- Open each rear door one at a time and observe the courtesy lamps. The courtesy lamps should illuminated when each rear door is opened.
- If the courtesy lamps do not illuminate as each rear door is opened, refer to Door Courtesy Lamp Malfunction - Rear .