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Test A: Power Mirrors Inoperative

  1. Before beginning diagnostic procedure, review Power Mirror DESCRIPTION & OPERATION  . Go to next step.
  2. Place mirror selector switch in left mirror position. Operate mirror position switch in up, down, left and right directions and note operation. Place mirror selector switch in right mirror position and operate in all directions. If both mirrors operated properly, check for and correct intermittent problem. If power mirrors did not function properly, go to next step.
  3. If both left and right mirrors are completely inoperative, go to next step. If both mirrors are not completely inoperative, go to step  6 .
    4. NOTE: Access to power mirror switch harness connector on Monte Carlo requires removal of door trim panel. See POWER MIRROR ASSEMBLY  under REMOVAL & INSTALLATION.
  4. Disconnect power mirror switch. Using test light connected to ground, probe battery positive voltage circuit terminal "G" (Orange wire) of power mirror switch connector. See Fig 1 and Fig 2 . If test light illuminates, go to next step. If test light does not illuminate, go to step  7 .
  5. Connect test light between battery positive voltage circuit terminal "G" (Orange wire) and ground circuit terminal "B" (Black wire) of power mirror switch harness connector. If test light illuminates, go to step  9 . If test light does not illuminate, go to step  15 .
  6. Disconnect inoperative power mirror harness connector. See Fig 3 . Connect test light between appropriate mirror motor control circuits of power mirror harness connector. See Fig 4 and Fig 5 . See WIRING DIAGRAMS  . Place mirror selector switch to mirror to be tested. Operate mirror switch in both directions for functions being tested. If test light illuminates in both directions, go to step  12 . If test light does not illuminate in both directions, go to step  8 .
  7. Test battery positive voltage circuit terminal "G" (Orange wire) of power mirror switch for short to ground or open. If problem was found, repair as necessary and then go to step  18 . If problem was not found, go to step  9 .
  8. Test mirror control circuits for open wires. See WIRING DIAGRAMS  . If problem is found, repair as necessary and then go to step  18 . If problem was not found, go to next step.
  9. If power mirror was previously disconnected, reconnect power mirror connector. Disconnect power mirror switch connector. Probe each power control circuit of power mirror switch harness connector with test light connected to battery positive voltage. See WIRING DIAGRAMS  . If test light illuminated at any of mirror control circuits, go to step  13 . If test light did not illuminate, go to next step.
  10. Using test light connected to ground, probe each of power mirror motor control circuits of power mirror switch harness connector. See WIRING DIAGRAMS  . If test light illuminated at any of mirror motor control circuits, go to step  14 . If test light did not illuminate, go to next step.
  11. Inspect for poor connection at harness connector of power mirror switch. If problem was found, repair as necessary and then go to step  18 . If problem was not found, go to step  16 .
  12. Inspect for poor connections at harness connector of power mirror. If problem is found, repair as necessary and then go to step  18 . If problem is not found, go to step  17 .
  13. Repair short to ground in power mirror motor control circuit. After completing repair, go to step  18 .
  14. Repair short to voltage in power mirror motor control circuits. After completing repair, go to step  18 .
  15. Repair open in power mirror switch ground circuit (Black wire). After completing repair, go to step  18 .
  16. Replace power mirror switch. See POWER MIRROR SWITCH  under REMOVAL & INSTALLATION. After completing repair, go to step  18 .
  17. Replace appropriate power mirror. See POWER MIRROR ASSEMBLY  under REMOVAL & INSTALLATION. After completing repair, go to next step.
  18. Operate system in order to verify repair. If system operation is normal, system is okay. If system operation is not normal, go to step  2 .
Fig 1: Identifying Location Of Power Mirror Switch & Harness Connector (Impala Is Shown; Monte Carlo Is Similar)
G00070809Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Outside Rearview Power Mirror Switch Connector Terminals
G00070807Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying Location Of Rearview Mirror Harness Connector & Mirror Mounting Points
G00070810Courtesy of GENERAL MOTORS CORP.
Fig 4: Identifying Passenger Side Power Mirror Connector Terminals
G99F02290Courtesy of GENERAL MOTORS CORP.
Fig 5: Identifying Driver Side Power Mirror Connector Terminals
G00070808Courtesy of GENERAL MOTORS CORP.
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