Circuit/System Testing
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Ignition ON, with a scan tool perform the Display Test for the instrument panel cluster (IPC) and observe the lights on indicator.
- If the lights on indicator illuminates during the test, replace the IPM.
- If the lights on indicator does not illuminate during the test or remains illuminated at all times, replace the IPC.