Circuit/System Testing
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the ignition key alarm switch
- Ignition ON, verify the scan tool Key In Ignition parameter is No.
- If not No, test the key in ignition signal circuit for a short to ground. If the circuit tests normal, replace the BCM.
- If all circuits test normal, test or replace the ignition switch.