Tilting of the power side mirror in reverse gear does not work
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Tilting of the power side mirror in reverse gear does not work
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Circuit/System Description
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The switch for exterior mirrors and the passenger's window switch are in a serial data circuit with memory seat module as master. The switches for mirror selection and directional control give input signals to the memory seat module through the serial data circuit. When the memory seat module receives switch input signals from the switch for exterior door mirrors, outgoing mirror commands are sent to the appropriate switch through the serial data circuit. The switch for the exterior door mirrors and passenger window switch controls the left and right exterior door mirrors through bi-directional motor control circuits. The motor control circuits are floating while in an inactive state and the switches will apply power and ground to the control circuits as necessary to move the mirror in the commanded direction.
Mirror position is determined by both horizontal and vertical position sensors in each of the power mirrors. The switch for the exterior mirrors and passenger window switch supply a 5 V reference, low reference, and horizontal and vertical position signal circuits to these sensors. The signal circuits are referenced from 5 V by the switches and the signal circuit voltage levels represent the mirror positions. The mirror positions are sent to the memory seat module through the serial data circuit where they are stored for memory mirror operation. When the memory seat module receives a memory recall command, the memory seat module will send the go to position commands to the switch and the exterior door mirrors and passenger window switch. The switches will then drive the appropriate mirror motors to the commanded position sensor settings.
All cars do have not this feature. Make sure that the option is listed in the settings menu for DIC adaptation before fault diagnosis starts.
Schematic Reference
Outside Rearview Mirror Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Outside Mirror Description and Operation (without AAB)
Outside Mirror Description and Operation (With AAB)
Electrical Information Reference
Scan Tool Reference
Control module, references
for information about the diagnostic tool
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Circuit/System Verification
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1.
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Ignition ON, verify that parking assistance is activated in DIC.
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2.
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Choose the side mirror on the driver's side, run the mirror in all directions and make sure everything works as it should.
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4.
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Choose the side mirror on the passenger side, run the mirror in all directions and make sure everything works as it should.
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6.
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Check that the mirror positions are stored in the two memory functions.
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7.
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Use the two memory buttons and verify that the side mirrors are set to the preset positions.
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9.
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Parking brake actuated, car running, engage reverse and check that the side mirrors tilt down.
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10.
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If the side mirror on the driver's side does not tilt down, replace the corresponding switch.
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11.
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If the side mirror on the passenger side does not tilt down, replace the corresponding switch.
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12.
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Parking brake on, car running, engage reverse and check that the side mirrors tilt down.
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13.
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If the side mirrors do not tilt down, replace the seat memory control module.
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Perform
Confirmation of diagnostic repair
after the repair has been completed.
See
Control module, references
for replacement of switches, door lock/window and programming of the memory module for adjustment of the driver or passenger seats.
