Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important:
| ||||
1 | Did you review the rear window defogger circuit description and perform the necessary inspections? | -- | Go to Symptoms | |
2 | Verify that the rear window defoggers are inoperative. Do the rear window defoggers operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | |
3 |
Does the test lamp illuminate? | -- | ||
4 | Locate the open in CKT 1450 (BLK) between the grid and G420. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
5 | Repair the open in CKT 1450 (BLK) between the grid and G420. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
6 | Replace the rear window defogger grid. Refer to Defogger Grid Lines Diagnosis . Did you complete the repair? | -- | -- | |
7 | Connect a test lamp between the RR defogger fuse located in the underhood fuse block and ground. Refer to Troubleshooting with a Test Lamp in Wiring Systems. Does the test lamp illuminate? | -- | ||
8 | Locate and repair the open in CKT 1093 (PPL) between the rear window defogger grid and the underhood fuse block. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
9 |
Does the test lamp illuminate? | -- | ||
10 |
Does the test lamp illuminate in both cavities? | -- | ||
11 | Replace the rear window defogger relay. Did you complete the repair? | -- | -- | |
12 | Locate and repair the power feed from power distribution to the rear window defogger relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
13 | Locate the open in CKT 193 (WHT) or CKT 1850 (BLK). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find an open? | -- | ||
14 | Repair the open in CKT 193 (WHT) or CKT 1850 (BLK). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
15 | Replace the rear defogger switch (part of the electronic climate control module). Refer to Control Assembly Replacement . Did you complete the repair? | -- | -- | |
16 | Operate the system in order to verify the repair. Did you find and correct the condition? | -- | System OK | |
