Circuit/System Testing

WARNING: This page is about a different car, the 2008 Saturn Sky and 2008 Pontiac Solstice. However, it is still accessible from the selected car via links, so may be relevant.

Power Mirrors Malfunction

Ignition OFF, disconnect the harness connector at the outside rearview mirror switch.
Ignition OFF, test for less than 1.0 ohm between the ground circuit terminal B and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify that a test lamp illuminates between the outside rearview mirror switch voltage supply circuit terminal G and ground.
- If the test lamp does not illuminate, test the voltage supply circuit for a short to ground or an open/high resistance.
Ignition OFF, disconnect the inoperative outside rearview mirror.
Connect a test lamp between the appropriate power mirror motor controls circuit at the power mirror motor harness connector.
Ignition ON, operate the inoperative power mirror to the positions being tested.
- If the test lamp does not illuminate as the switch is activated, test the power mirror motor control circuits for a short to ground or an open/high resistance. If the circuits test normal, test or replace the outside rearview mirror switch.
If all circuits test normal, test or replace the inoperative outside rearview mirror.