Outside Mirror Description and Operation (with A45)
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Outside Mirror Description and Operation (with A45)
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Power Mirror System Components
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The power mirror system consists of the following components:
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Passenger window switch
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Left Outside Rearview Mirror
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Right Outside Rearview Mirror
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Power Mirror System Controls
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The outside mirror switch and passenger window switch are on a serial data circuit with the memory seat module as the master. The mirror select and directional control switches are inputs to the memory seat module through the serial data circuit. When the memory seat module receives switch inputs from the outside mirror switch, mirror output commands are sent to the appropriate switch through the serial data circuit. The outside mirror switch and passenger window switch control the left and right outside rear view 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 outside mirror switch 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 outside mirror switch and passenger window switch. The switches will then drive the appropriate mirror motors to the commanded position sensor settings.
The mirror select and fold/unfold switches are inputs to the memory seat module through a serial data circuit. When the memory seat module receives a fold/unfold signal from the outside mirror switch the memory seat module will send a fold/unfold command to the outside mirror switch and passenger window switch. The switches will fold or unfold the mirrors depending on their current state. The outside mirror switch and passenger window switch control the fold/unfold motors through bi-directional control circuits.
This function can also be achieved through the Comfort Open/Close function. If enabled through personalization, the Comfort Open will retract the mirrors and Comfort Close will fold the mirrors.
The heated mirrors are controlled through the rear defog relay. Whenever the rear window defogger is turned on battery voltage is supplied to the mirror heater elements through the left and right mirror heater element control circuits.
