LaCrosse 2006-2007

Mirrors

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Power Mirrors



Diagnosis & Testing


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Fig. Outside rearview mirror schematics

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located. Inspect for aftermarket devices which could affect the operation of the system. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom. Faulty electrical connections or wiring may be the cause of intermittent conditions.

If the power mirror system fuse is open and a short to ground in the battery positive voltage circuit is not detected, the fault could be a short to ground in one of the power mirror control circuits. This would open the power mirror system fuse when the mirror switch is pressed.

If both power mirrors are inoperative on one or more axis, the most probable cause is a power mirror switch failure. However the fault could be an open circuit on two or more of the power mirror control circuits.

The power mirror assembly is equipped with a pigtail harness and is not serviceable. If an internal open or short is detected in the power mirror assembly, replace the power mirror assembly.

The rearview mirror motors have circuit breakers installed in the motors. The circuit breakers will open the circuit after 30 seconds of continuous voltage. The motors are bi-directional. When voltage and ground are reversed the motor will also reverse in direction.

Mirror Motor
  1. Ensure that the ignition switch is OFF.
  2.  
  3. Disconnect the harness connector at the outside rearview mirror motor.
  4.  
  5. Test for infinite resistance between the mirror control circuits and ground.

    If less than infinite resistance, test the control circuits for a short to ground
     

  6.  
  7. Install a test lamp between the control circuit for the particular motor and the common control circuit for the mirror motors.
  8.  
  9. Operate the mirror motor by the mirror switch. The test lamp should illuminate with each command.

    If the test lamp does not illuminate, test the motor control circuits for an open/high resistance or a short to ground. If the circuits test normal, test or replace the rearview mirror switch.
     
    If the test lamp stays ON constantly, test the motor control circuit for a shout to voltage.
     
    If the circuits test normal, test or replace the rearview mirror switch.
     
    If all circuits test normal, test or replace the outside rearview mirror motor.
     

  10.  

Removal & Installation
Motor


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Fig. Outside power mirror with replaceable motor

  1. Before servicing the vehicle, refer to the Precautions Section.
    CAUTION
    Approved safety glasses and gloves should be worn when performing this procedure to reduce the chance of personal injury.


    NOTE
    The mirror back is made so that the bottom edge fits into a slot and clips in place. This allows the mirror to rotate.

  2.  
  3. Remove the mirror face (1):
    1. Carefully push the mirror face toward the front of the car and downward on the inner edge, near the front door window glass, to allow access.
    2.  
    3. Grasp the mirror face back and firmly pull it away from the mirror motor and housing. It will be necessary to use a sharp jerking motion to release it from the housing.
    4.  
    5. Lift the mirror back up and out to release the lower tabs.
    6.  
    7. Disconnect the heated mirror wires, if equipped.
    8.  

  4.  
  5. Remove the screw from the mirror motor (2).
  6.  
  7. Disconnect the electrical connector from the edge of the mirror motor.
    NOTE
    Note the position of the plugs on the mirror motor when removing.

  8.  
  9. Remove the mirror motor.
  10.  

To install:

  1. Position the motor to the mirror housing.
  2.  
  3. Connect the electrical connector to the edge of the mirror motor.
  4.  
  5. Install the screw to the mirror motor. Tighten the screw to 18 inch lbs. (2 Nm).
  6.  
  7. Install the mirror face to the mirror housing:
    1. Connect the heated mirror wires, if equipped.
    2.  
    3. Using the palm of your gloved hand, press firmly on the center of the glass until the case seats onto the motor. The mirror will make a snapping noise when properly seated.
    4.  
    5. Inspect the mirror for proper operation.
    6.  

  8.  

Switch
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the cover in the armrest pull cup.
  4.  
  5. Remove the armrest pull cup screws.
  6.  
  7. Remove the screw cover from the inside door handle. Remove the screw.
  8.  
  9. Slide the J 38778, door trim pad clip remover, behind the door trim extension panel. Press out to free the retainer.
  10.  
  11. Starting at the door bottom, use the J 38778 to disengage the retainers from the door trim panel.
  12.  
  13. Lift the trim panel up to release the top edge and move it away from the door.
  14.  
  15. Using needle nose pliers, compress the plastic connector on the cable end to release the cable from the door panel.
  16.  
  17. Disconnect the door handle cable end from the door handle.
  18.  
  19. Disconnect the electrical connector to the door electric harness. Pinch the release tabs and lift the cam lock and separate the connector.
  20.  
  21. Remove the front door trim panel from the vehicle.
  22.  
  23. Disconnect the electrical connector from the mirror switch.
  24.  
  25. Using a small flat-bladed tool, carefully release the power mirror switch retainers and remove the switch.
  26.  
  27. Remove the switch from the vehicle.
  28.  

To install:

  1. Install the electrical connector to the power mirror switch.
  2.  
  3. Press the switch into the retainer plate.
  4.  
  5. Connect the electrical connector to the door electric harness. Press the cam lock in to secure the connector.
  6.  
  7. Connect the door handle cable to the door handle.
  8.  
  9. Position the top of the trim panel at the window opening and press down.
  10.  
  11. Align the fasteners into the holes in the door metal.
  12.  
  13. Firmly press the door panel to seat the fasteners.
  14.  
  15. Install the armrest pull cup screws. Tighten the screws to 27 inch lbs. (3 Nm).
  16.  
  17. Install the inside door handle screw. Tighten the screws to 27 inch lbs. (3 Nm).
  18.  
  19. Install the screw cover.
  20.  

 
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