Circuit/System Verification
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- Observe the scan tool Driver Door Switch, Driver Door Open Sw. parameter while opening and closing the driver door. The reading should change between Open and Closed.
- If the Driver Door Open Sw. parameter does not change between Open and Closed, refer to Door Open Switch Test-Front.
- Observe the scan tool Passenger Door Switch, Passenger Door Open Sw. parameter while opening and closing the front passenger door. The reading should change between Open and Closed.
- If the Passenger Door Open Sw. parameter does not change between Open and Closed, refer to Door Open Switch Test-Front.
- Observe the scan tool BCM Ctsy. Lamp Actv. Reason parameter while opening and closing each rear door one at a time. The reading should change between Door Open and Door Closed.
- If the Ctsy. Lamp Actv. Reason parameter does not change between Door Open and Door Closed, refer to Door Open Switch Test-Rear.
- Ignition ON and all doors closed, observe the scan tool BCM Ctsy. Lamp Actv. Reason parameter while turning the dome lamp switch ON and OFF. The reading should change between OFF and MANUAL.
- If the Ctsy. Lamp Actv. Reason parameter does not change between OFF and MANUAL, refer to Dome Lamp Switch Test.
- If all scan tool parameters test normal, refer to the appropriate diagnostic procedure listed below.
- Courtesy/Reading Lamps Circuit Test - with Courtesy Lamp Module
- Front Door Courtesy Lamp Circuit Test
- Courtesy Lamp Circuit Test - w/o Courtesy Lamp Module
- Inadvertent Power Courtesy Lamps Circuit Test
- Overhead Console Courtesy/Reading Lamp Circuit Test - Limo/Hearse
- Roof Rail Courtesy/Reading Lamp Circuit Test - Limo/Hearse