Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the entire Defogger System Check performed? | -- | Go to Step 2 | Go to Defogger System Check |
2 |
Does the test light illuminate? | -- | Go to Step 3 | Go to Step 4 |
3 |
Does the test light illuminate? | -- | Go to Step 5 | Go to Step 6 |
4 | Connect a test light in order to backprobe between the HVAC control connector C4 terminal A and ground. Does the test light illuminate? | -- | Go to Step 7 | Go to Step 8 |
5 |
Does the test light illuminate? | -- | Go to Step 9 | Go to Step 10 |
6 | Repair a poor connection or open in circuit 241. Is the repair complete? | -- | Go to Step 15 | -- |
7 | Repair a poor connection or open in circuit 650. Is the repair complete? | -- | Go to Step 15 | -- |
8 | Repair a poor connection or open in circuit 1240. Is the repair complete? | -- | Go to Step 15 | -- |
9 | Connect a test light in order to backprobe between the rear defogger grid circuits 293 and 1150/1750. Does the test light illuminate? | -- | Go to Step 11 | Go to Step 12 |
10 | Replace the HVAC control. Refer to Control Assembly Replacement in HVAC Systems with A/C-Manual. Is the repair complete? | -- | Go to Step 15 | -- |
11 | Replace the rear defogger grid. Refer to Grid Line Repair . Is the repair complete? | -- | Go to Step 15 | -- |
12 | Connect a test light in order to backprobe between the rear defogger grid circuit 1150/1750 and B+. Does the test light illuminate? | -- | Go to Step 13 | Go to Step 14 |
13 | Check for a short to ground in circuit 293. Is there a short present in circuit 293? | -- | Go to Step 16 | Go to Step 17 |
14 | Repair a poor connection or open in circuit 1150/1750. Is the repair complete? | -- | Go to Step 15 | -- |
15 |
Have all the repairs been made? | -- | Go to Defogger System Check | -- |
16 | Repair a short to ground in circuit 293. Is the repair complete? | -- | Go to Step 15 | -- |
17 | Repair a poor connection or open in circuit 293. Is the repair complete? | -- | Go to Step 15 | -- |
