Power Mirrors - Inoperative (Except Escalade)

DIAGNOSTIC AIDS
^ 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 2 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.

TEST DESCRIPTION

Steps 1-8:

Steps 9-18:

6. This step tests the integrity of both the mirror control circuits and the power mirror switch. If both power mirrors are inoperative on 1 or more axis, begin testing by disconnecting one of the power mirrors, if an open circuit is detected and repaired for that power mirror, repeat step 6 for the other power mirror.
7. This step tests the integrity of the battery positive voltage circuit not the fuse.