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 inside rearview mirror.
- Ignition ON, test for 9.8-10.2 volts between keypad supply voltage terminal 12 and ground.
- If less than the specified range, test the keypad supply voltage circuit for an open/high resistance or a short to ground. If the circuit tests normal, test or replace the VCIM.
- If greater than the specified range, test the keypad supply voltage circuit for a short to voltage. If the circuit tests normal, test or replace the VCIM.
- If the circuit tests normal, replace the inside rearview mirror.