Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the rear window defogger circuit description and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Verify that the rear window defoggers are always on. Does the rear window defogger operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Use the scan tool in order to inspect for any DTCs (electronic climate control only). Are any DTCs present? | -- | Go to the Appropriate DTC | Go to Step 4 |
4 |
Does the rear window defogger remain ON? | -- | Go to Step 5 | Go to Step 8 |
5 | Remove the HTD MIR fuse from the underhood fuse block. Does the rear window defogger remain ON? | -- | Go to Step 7 | Go to Step 6 |
6 | Repair the short to B+ in CKT 2267 (ORN) between the underhood fuse block and the LH/RH outside rear view mirror. Did you complete the repair? | -- | Go to Step 13 | -- |
7 | Repair the short to B+ in CKT 1093 (PPL) between the underhood fuse block and endgate or liftgate rear window defogger grid. Did you complete the repair? | -- | Go to Step 13 | -- |
8 | Remove the starter relay in the underhood fuse block and substitute for the rear window defogger relay. Is the rear defogger relay energized? | -- | Go to Step 9 | Go to Step 10 |
9 | Disconnect the heater and A/C controller connector or the electronic climate control (ECC) module connector. Is the defogger relay energized? | -- | Go to Step 11 | Go to Step 12 |
10 | Replace the rear window defogger relay. Did you complete the repair? | -- | Go to Step 13 | -- |
11 | Repair a short to ground in CKT 193. Did you complete the repair? | -- | Go to Step 13 | -- |
12 | Replace the heater and A/C controller or the ECC. Did you complete the repair? | -- | Go to Step 13 | -- |
13 | Operate the system in order to verify the repair. Did you find and correct the condition? | -- | System OK | Go to Step 3 |
