Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: One or both rear window defoggers inoperative. | ||||
1 | Did you review the rear window defogger description and operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Verify the fault is present. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Are both rear window defoggers inoperative? | -- | Go to Step 4 | Go to Step 14 |
4 |
Does the test lamp light? | -- | Go to Step 5 | Go to Step 10 |
5 | Connect an J 35616-200 unpowered test lamp between the rear window defogger relay connector cavity C1 for CKT 1540 (ORN) and cavity C2 for CKT 150 (BLK). Does the test lamp light? | -- | Go to Step 7 | Go to Step 6 |
6 | Repair the open wire in CKT 150 (BLK) between the rear window defogger relay connector cavity C2 for CKT 150 (BLK) and ground G400, refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
7 |
Does the test lamp light? | -- | Go to Step 8 | Go to Step 11 |
8 |
Does the grid operate? | -- | Go to Step 9 | Go to Step 12 |
9 | Replace the rear window defogger relay. Refer to Rear Window Defogger Relay Replacement . Is the repair complete? | -- | Go to Step 19 | -- |
10 | Inspect the RR DEFOG fuse 22. If OK, repair the open wire in CKT 1540 (ORN) between the rear window defogger relay connector cavity C1 and the RR FOG fuse. Is the repair complete? | -- | Go to Step 19 | -- |
11 | Are the LH and RH outside heated mirrors also inoperative? | -- | Go to Step 13 | |
12 | Locate and repair the open wire in CKT 293 (PPL) between the rear window defogger relay connector cavity A2 and S429, refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
13 | Repair the open wire in CKT 267 (ORN) between the rear window defogger relay connector cavity A1 and S245, refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
14 |
Did the test lamp light? | -- | Go to Step 16 | Go to Step 15 |
15 | Repair open wire in CKT 293 (PPL) between the defogger element connector cavity A at the inoperative grid and S429, refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
16 | Connect an J 35616-200 unpowered test light across connector cavity A for CKT 293 (BLK) and connector cavity A for CKT 250 (BLK) at the inoperative window grid connector. Does the test lamp light? | -- | Go to Step 17 | Go to Step 18 |
17 |
Is the repair complete? | -- | Go to Step 19 | -- |
18 | Repair the open ground in CKT 250/150 (BLK) between the inoperative window grid connector cavity A and ground, refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 19 | -- |
19 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
