Power Mirror Malfunction (without A45)
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Power Mirror Malfunction (without 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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Left/Right Mirror Motor Horizontal Control
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1
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1
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-
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-
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Left/Right Mirror Motor Vertical Control
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1
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1
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-
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-
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Left/Right Mirror Motor Common Control
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1
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1
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-
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-
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1. Power mirror malfunction
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Circuit/System Description
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The outside rearview mirror switch controls the outside rearview mirrors based on the position of the mirror selector switch and which movement position is selected. The outside rearview mirror switch has four positions: up, down, left, and right. B+ is applied to the switch from the power mirror fuse and when a movement position switch is selected, voltage is sent to the commanded mirror via a mirror control circuit. The opposite mirror control circuit acts as a ground circuit for the bi-directional mirror motor. Ground is the applied through the switch.
Schematic Reference
Outside Rearview Mirror Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Outside Mirror Description and Operation (with A45)
Outside Mirror Description and Operation (w/o 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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Ignition ON, with the mirror selector switch in the DRIVER position, command the mirrors UP, DOWN, LEFT, and RIGHT using the mirror directional switch. The driver mirror should move in the commanded direction.
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2.
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With the mirror selector switch in the PASSENGER position, command the mirrors UP, DOWN, LEFT, and RIGHT using the mirror directional switch. The passenger mirror should move in the commanded direction.
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1.
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Ignition OFF, disconnect the harness connector at the S52 outside rearview mirror switch.
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2.
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Wait 1 minute, test for less than 10 Ω between the ground circuit terminal 5 and ground.
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3.
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If greater than the specified range, test the ground circuit for an open/high resistance.
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4.
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Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 4 and ground.
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5.
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If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
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6.
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Ignition OFF, connect the harness connector at the S52 outside rearview mirror switch.
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7.
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Disconnect the harness connector at the appropriate A9 outside mirror.
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8.
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Connect a test lamp between the control circuit terminal 2 and the control circuit terminal 8.
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9.
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Operate the vertical switch UP and DOWN. The test lamp should turn ON when commanding the UP and DOWN states.
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10.
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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 the control circuits. If the circuits test normal, replace the S52 outside mirror switch.
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11.
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Connect a test lamp between the control circuit terminal 7 and the control circuit terminal 8.
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12.
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Operate the horizontal switch LEFT and RIGHT. The test lamp should turn ON when commanding the LEFT and RIGHT states.
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13.
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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 the control circuits. If the circuits test normal, replace the S52 outside mirror switch.
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14.
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If all circuits test normal, test or replace the outside rearview mirror inner actuator.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
