Outside Rearview Mirror Defoggers

OUTSIDE REARVIEW MIRROR DEFOGGERS - DIAGNOSIS PROCEDURE

Step	Action	Value (s)	Yes	No
1	Check the rear window defogger. Does the rear window defogger work?	-	Go to Step 4	Go to Step 2
2	Repair the rear window defogger before proceeding with the outside rearview mirror diagnosis. Is the repair complete?	-	Go to Step 3	-
3	Test the outside rearview mirror defoggers. Does the repair of the rear window defogger system also fix the problem with the outside rearview mirror defoggers	-	System OK	Go to Step 4
4	Check fuse Ef25. Is fuse Ef25 blown?	-	Go to Step 5	Go to Step 6
5	Check for a short circuit and repair it, if necessary. Replace the fuse. Is the repair complete?	-	System OK	-
6	On the side of the vehicle which has the malfunctioning outside rearview mirror defogger, remove the black plastic escutcheon from the trim panel side of the door. Disconnect the outside rearview mirror electrical connector. Turn the ignition ON. Turn ON the defogger. Use a voltmeter to backprobe terminal 3 (ORN) at the outside rearview mirror electrical connector. Does the voltmeter indicate the specified value?	11 - 14 V	Go to Step 8	Go to Step 7
7	Repair the open circuit between fuse Ef25 and the outside rearview mirror connector. Is the repair complete?	-	System OK	-
8	Turn the ignition OFF. Disconnect the outside rearview mirror electrical connector. Use an ohmmeter to measure the resistance between terminal 8 (BLK) of the outside rearview mirror connector and ground. Does the ohmmeter indicate the specified value?	0 Ω	Go to Step 10	Go to Step 9
9	Repair the open ground circuit for the outside rearview mirror. Is the repair complete?	-	System OK	-
10	Replace the defective outside rearview mirror. Is the repair complete?	-	System OK	-