Circuit/System Testing
WARNING: This page is about a different car, the 2007 Saturn Ion Red Line, 2007 Saturn Ion 3, and 2007 Saturn Ion 2. 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 less than 1 volt at the keypad signal terminal 11.
- If greater than specified value, test the circuit for short to voltage. If the circuit tests normal, test or replace the VCIM.
- Test for less than 1 ohm of resistance between the VCIM and inside rearview mirror.
- If greater than specified value, test the circuit for open/high resistance, or for short to ground.
- If the circuit tests normal, test or replace the inside rearview mirror.