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Home >> Saturn >> 2007 >> Aura XR >> 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 power mirror switch of the outside rearview mirror.
  2. Ignition ON, verify that a test lamp illuminates between the voltage supply circuit and ground.
    • If the test lamp does not illuminate, repair the voltage supply circuit for a short to ground or an open/high resistance.
  3. Ignition OFF, test for less than 1 ohm of resistance between the ground circuit and ground.
    • If greater than 1 ohm, test the ground circuit for an open/high resistance.
  4. Test for 25-95 ohms of resistance between the control terminal and the ground terminal of each motor control circuit.
    • If the resistance is not within the specified range, test the circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the outside rearview mirror.
  5. If all circuits test normal, replace the power mirror switch.
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