Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open. | ||||
1 |
Does the test lamp light? | -- | Go to Step 2 | Go to Step 3 |
2 | Connect the test lamp between the heater-A/C and rear defogger control assembly harness connector C1 terminal H and B. Does the test lamp light? | -- | Go to Step 4 | Go to Step 5 |
3 | Repair the open in CKT 41 between the fuse block and the heater-A/C and rear defogger control assembly. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Defogger System Check | -- |
4 | Connect the test lamp between the heater-A/C and rear defogger control assembly harness connector C1 terminal A and H. Does the test lamp light? | -- | Go to Step 6 | Go to Step 7 |
5 | Repair the open in CKT 150 between the heater-A/C and rear defogger control assembly and ground G204. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Defogger System Check | -- |
6 |
Does the test lamp light? | -- | Go to Step 8 | Go to Step 9 |
7 | Repair the open in CKT 1340 between the fuse block and the heater-A/C and rear defogger control assembly. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Defogger System Check | -- |
8 |
Does the test lamp light? | -- | Go to Step 10 | Go to Step 11 |
9 | Replace the heater-A/C and rear defogger control assembly. Refer to Control Assembly Replacement in HVAC Systems-Manual. Is the repair complete? | -- | Go to Defogger System Check | -- |
10 | Connect the test lamp between the rear defogger grid harness connector C2 terminal A and battery positive. Does the test lamp light? | -- | Go to Step 12 | Go to Step 13 |
11 | Repair the open in CKT 293 between the heater-A/C and rear defogger control assembly and the rear defogger grid. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Defogger System Check | -- |
12 | Repair the open in the rear defogger grid. Refer to Grid Line Repair . Is the repair complete? | -- | Go to Defogger System Check | -- |
13 | Repair the open in CKT 250 between the rear defogger grid and ground G302. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Defogger System Check | -- |
