Power Mirror Folding Malfunction (with A45)
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Power Mirror Folding Malfunction (with A45)
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Diagnostic Fault Information
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Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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Folding Mirror Motor Fold Control
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1
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1
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-
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-
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Folding Mirror Motor Unfold Control
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1
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1
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-
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-
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1. Folding electric rear-view mirror inoperative/malfunctioning
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Circuit/System Description
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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 or unfold command to the outside mirror switch and passenger window switch. The outside mirror switch and passenger window switch control the fold/unfold motors through bi-directional control circuits.
Schematic Reference
Outside Rearview Mirror Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Outside Mirror Description and Operation (w/o A45)
Outside Mirror Description and Operation (with A45)
Electrical Information Reference
Scan Tool Reference
Control Module References
for information on diagnostic tools
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Circuit/System Verification
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1.
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Observe the scan tool Mirror Select Switch parameter while you move the switch between left, right and neutral/fold. The reading should change between Left, Right, and Neutral/Fold.
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2.
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If the reading does not change between the specified values replace the S52 outside mirror switch.
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3.
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Command the driver and passenger mirrors to Fold and Unfold with a scan tool. Both mirrors should move in the commanded direction.
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Note
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Circuit/system verification must be carried out before circuit/system testing.
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1.
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Ignition OFF, disconnect the harness connector at the appropriate A9 outside rearview mirror.
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2.
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Connect a test lamp between the control circuit terminal 9 and the control circuit terminal 10.
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3.
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Command the driver and passenger mirrors to Fold and Unfold with a scan tool. The test lamp should turn ON when commanding the fold and unfold states.
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4.
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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 either control circuit. If the circuits test normal, replace the appropriate switch.
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•
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S52 outside mirror switch
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•
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S79P passenger window switch
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5.
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If all circuits test normal, test or replace the A9 outside rearview mirror.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
