Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the defogger system check performed? | -- | Go to Step 2 | Go to Defogger System Check |
2 |
Are the REAR DEFOG fuse and the HVAC/DRL fuse OK? | -- | Go to Step 3 | Go to Step 5 |
3 | Turn on the rear defogger switch. Does the rear defogger indicator lamp turn on? | -- | Go to Step 7 | Go to Step 4 |
4 | Replace the heater-A/C control. Control Assembly Replacement Is the repair complete? | -- | Go to Defogger System Check | -- |
5 | Is the HVAC/DRL fuse open? | -- | Go to Step 21 | Go to Step 6 |
6 | Is the REAR DEFOG fuse open? | -- | Go to Step 14 | Go to Step 7 |
7 | Using a test light, connect by backprobing between the rear window defogger connector terminal C1 and ground. Is the test light on? | -- | Go to Step 8 | Go to Step 13 |
8 |
Is the test light on? | -- | Go to Step 9 | Go to Step 15 |
9 | Using a test light connected to ground, check for power at the HEATED MIRROR fuse. Is there power at the HEATED MIRROR fuse? | -- | Go to Step 10 | Go to Step 18 |
10 |
Is the test light on? | -- | Go to Step 11 | Go to Step 19 |
11 | Using a test light, connect between B+ and the outside rearview mirror connector terminal F by backprobing. Is the test light on? | -- | Go to Step 12 | Go to Step 20 |
12 | Replace the inoperative outside rearview mirror. Inside Rearview Mirror Replacement Is the repair complete? | -- | Go to Defogger System Check | -- |
13 | Repair poor connection or open in CKT 1040. Is the repair complete? | -- | Go to Defogger System Check | -- |
14 | Repair short to ground in CKT 1040 and/or CKT 293. Is the repair complete? | -- | Go to Defogger System Check | -- |
15 |
When cycling the rear defogger switch, does the DMM display a change of resistance between ∞ (OL) and less than 2ohms? | -- | Go to Step 17 | Go to Step 16 |
16 | Replace the rear window defogger relay. Rear Window Defogger Relay Replacement Is the repair complete? | -- | Go to Defogger System Check | -- |
17 | Check for poor connection or open at the rear window defogger relay terminals B5 and/or C7 and repair as needed. Is the repair complete? | -- | Go to Defogger System Check | -- |
18 | Repair poor connection or open in CKT 293 between S275 and the HEATED MIRROR fuse block terminal A9. Is the repair complete? | -- | Go to Defogger System Check | -- |
19 | Repair poor connection or open in CKT 267 between C200 terminal C4 and the inoperative outside rearview mirror. Is the repair complete? | -- | Go to Defogger System Check | -- |
20 | Repair poor connection or open in CKT 750. Is the repair complete? | -- | Go to Defogger System Check | -- |
21 | Repair short to ground in CKT 241. Is the repair complete? | -- | Go to Defogger System Check | -- |
