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Contents Wiring diagrams Section: Mirrors All sections

Mirror System: Diagnosis Chevrolet Volt I

Mirrors ~736 words

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the system. Refer to «Checking Aftermarket Accessories»(ref-487461-S39907746842012072300000) .
  2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

  1. «Heated Mirrors Malfunction»(ref-487469-S29886312252012072300000)
  2. «Power Mirror Malfunction»(ref-487469-S41296014682012072300000)

Diagnostic Instructions

  1. Perform the «Diagnostic System Check - Vehicle»(ref-487438-S13406627192012072300000) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(ref-487438-S08433352102012072300000) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(ref-487438-S20414004952012072300000) provides an overview of each diagnostic category.

Diagnostic Fault Information

CircuitShort to GroundOpen/High ResistanceShort to VoltageSignal Performance
Heated Mirror Element Control112
Ground1
1. Heated Mirror Inoperative 2. Heated Mirror Always On

Circuit/System Testing

  1. Vehicle OFF, disconnect the harness connector at the appropriate A9 outside rearview mirror.
  2. Wait 1 minute, test for less than 10 ohms between the appropriate ground circuit terminal and ground. Driver outside rearview mirror terminal D Passenger outside rearview mirror terminal E If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Connect a test lamp between the heater element control circuit terminal F and ground.
  4. Vehicle ON, operate the rear window defogger ON and OFF with the rear defogger switch. 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 test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance.
  5. If all circuits test normal, test or replace the outside rearview mirror glass.
  1. Perform the «Diagnostic System Check - Vehicle»(ref-487438-S13406627192012072300000) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(ref-487438-S08433352102012072300000) for an overview of the diagnostic approach
  3. «Diagnostic Procedure Instructions»(ref-487438-S20414004952012072300000) provides an overview of each diagnostic category
CircuitShort to GroundOpen/High ResistanceShort to VoltageSignal Performance
Ignition11
Backup Lamp Control111
Ground1
1. Inside Electrochromic Mirror Malfunction
  1. Vehicle OFF, disconnect the harness connector at the A10 inside rearview mirror.
  2. Wait 1 minute, test for less than 10 ohms between the ground circuit terminal 5 and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Vehicle in Service Mode, verify that a test lamp illuminates between the ignition circuit terminal 2 and ground. If the test lamp does not illuminate test the ignition circuit for an open/high resistance or short to ground.
  4. Vehicle ON, park brake applied, vehicle in REVERSE, verify that a test lamp illuminates between the backup lamp control circuit terminal 1 and ground. If the test lamp does not illuminate test the control circuit for an open/high resistance or short to ground. If the circuit tests normal, refer to «Backup Lamps Malfunction»(ref-487446-S17730445902012072300000) .
  5. If all circuits test normal, test or replace the A10 inside rearview mirror.
  1. Perform the «Diagnostic System Check - Vehicle»(ref-487438-S13406627192012072300000) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(ref-487438-S08433352102012072300000) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(ref-487438-S20414004952012072300000) provides an overview of each diagnostic category.
CircuitShort to GroundOpen/High ResistanceShort to VoltageSignal Performance
Left/Right Mirror Motor Horizontal Control11
Left/Right Mirror Motor Vertical Control11
Left/Right Mirror Motor Common Control11
1. Power Mirror Malfunction
  1. Vehicle OFF, disconnect the harness connector at the S52 outside mirror switch.
  2. Wait 1 minute, test for less than 10 ohms between the ground circuit terminal 11 and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Vehicle in Service Mode, verify that a test lamp illuminates between the B+ circuit terminal 12 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. Vehicle OFF, connect the harness connector at the S52 outside mirror switch.
  5. Disconnect the harness connector at the appropriate A9 outside rearview mirror.
  6. Connect a test lamp between the control circuit terminal H and the control circuit terminal B.
  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 S52 outside mirror switch.
  8. Connect a test lamp between the control circuit terminal H and the control circuit terminal G.
  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 S52 outside mirror switch.
  10. If all circuits test normal, test or replace the A9 outside rearview mirror.

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