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Home >> Saturn >> 2009 >> Sky Base, Automatic >> Repair and Diagnosis >> Body & Frame >> Mirrors >> Mirror System >> Diagnostic Information and Procedures >> Power Mirrors Inoperative >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the outside rearview mirror switch.
  2. Ignition OFF for 1 minute, test for less than 10 ohms between the ground circuit terminal B and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Verify that a test lamp illuminates between the B+ circuit terminal G and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. Connect the harness connector at the outside rearview mirror switch.
  5. Disconnect the harness connector at the appropriate outside rearview mirror.
  6. Connect a test lamp between the control circuit terminal 3 and the control circuit terminal 2.
  7. Operate the vertical switch UP and DOWN. The test lamp should turn ON when commanding the UP and DOWN states.
    • If the test lamp remains OFF during either of the commands, test for a short to voltage, short to ground, or an open/high resistance on the control circuits. If the circuits test normal, replace the power mirror switch.
  8. Connect a test lamp between the control circuit terminal 1 and the control circuit terminal 2.
  9. Operate the horizontal switch LEFT and RIGHT. The test lamp should turn ON when commanding the LEFT and RIGHT states.
    • If the test lamp remains OFF during either of the commands, test for a short to voltage, short to ground, or an open/high resistance on the control circuits. If the circuits test normal, replace the power mirror switch.
  10. If all circuits test normal, test or replace the outside rearview mirror motor.
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