Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: Rear window defoggers are always on and will not turn off. | ||||
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 |
Is voltage greater than the specified value? | 1 V | Go to Step 4 | Go to Step 5 |
4 | Locate and repair the short to B+ in CKT 293 (PPL) between the rear window defogger relay cavity A2 and the rear window, refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 10 | -- |
5 |
Is the voltage measured above the specified value? | 1 V | Go to Step 6 | Go to Step 8 |
6 |
Is the voltage measured above the specified value? | 1 V | Go to Step 7 | Go to Step 9 |
7 | Locate and repair the short to B+ in CKT 267 (ORN) wire, refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 10 | -- |
8 | Replace the rear window defogger relay, refer to Rear Window Defogger Relay Replacement . Is the repair complete? | -- | Go to Step 10 | -- |
9 | Replace the heater and A/C controller, refer to Control Assembly Replacement in HVAC Manual. Is the repair complete? | -- | Go to Step 10 | -- |
10 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
