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Home >> Chevrolet >> 2006 >> SSR Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Mirror System) >> Diagnostic Information and Procedures >> Heated Mirrors Inoperative >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the C1 harness connector at the inoperative outside rearview mirror.
  2. Test for less than 1.0 ohm of resistance between the ground circuit terminal B and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Connect a test lamp between the control circuit terminal E and the ground circuit terminal B.
  4. Command the inoperative mirror heater ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the inoperative door control module.
    • If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the inoperative door control module.
  5. If all circuits test normal, test or replace the inoperative outside rearview mirror.
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