Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Did you review the Symptoms List? | -- | Go to Step 2 | Go to Symptoms | ||||
2 |
Does the indicator turn on? | -- | Go to Step 3 | Go to Step 16 | ||||
3 |
Does the test lamp light? | -- | Go to Step 4 | Go to Step 9 | ||||
4 | Use a test lamp in order to backprobe the rear window defogger relay harness connector between terminal C2 and ground. Does the test lamp light? | -- | Go to Step 5 | Go to Step 8 | ||||
5 |
Important: If the rear defogger ON indicator turns off before the test is made, press and release the rear defogger switch again. Use a test lamp in order to backprobe the rear window defogger relay harness connector between terminal A1 and terminal C2. Does the test lamp light? | -- | Go to Step 6 | Go to Step 7 | ||||
6 | Replace the rear window defogger relay. Is the repair complete? | -- | Go to Step 25 | -- | ||||
7 | Repair a poor connection or an open in circuit 193 (WHT). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- | ||||
8 | Repair a poor connection or an open in circuit 541 (BRN) between the rear window defogger relay harness connector terminal C2 and the fuse block terminal B2. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- | ||||
9 |
Important: If the rear defogger ON indicator turns off before the test is made, press and release the rear defogger switch again. Use a test lamp in order to backprobe the rear window defogger relay harness connector between terminal C1 and ground. Does the test lamp light? | -- | Go to Step 10 | Go to Step 15 | ||||
10 |
Important: If the rear defogger ON indicator turns off before the test is made, press and release the rear defogger switch again. Does the test lamp light? | -- | Go to Step 11 | Go to Step 12 | ||||
11 | Repair the rear defogger grid. Refer to Defogger Grid Lines Diagnosis . Is the repair complete? | -- | Go to Step 25 | -- | ||||
12 |
Important: If the rear defogger ON indicator turns off before the test is made, press and release the rear defogger switch again. Use a test lamp in order to probe between the rear defogger grid harness connector C1 and ground. Does the test lamp light? | -- | Go to Step 13 | Go to Step 14 | ||||
13 | Repair a poor connection or an open in circuit 750 (BLK) between the rear defogger grid connector C2 and G301. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- | ||||
14 | Repair a poor connection or an open in circuit 293 (PPL) between the rear window defogger relay connector terminal A2 and the rear defogger grid connector grid connector C1. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- | ||||
15 | Repair a poor connection or an open in circuit 1040 (ORN) between the fuse block terminal G2 and the rear window defogger relay harness connector terminal C1. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- | ||||
16 | Inspect the DIC/HVAC fuse (fuse 4) in the fuse block. Is the fuse open? | -- | Go to Step 17 | Go to Step 18 | ||||
17 | Repair the short to ground in circuit 541 (BRN). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- | ||||
18 |
Does the test lamp light? | -- | Go to Step 19 | Go to Step 21 | ||||
19 |
Does the test lamp light? | -- | Go to Step 20 | Go to Step 24 | ||||
20 | Repair a short to B+ in circuit 193 (WHT). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- | ||||
21 | Use a test lamp in order to backprobe between the Heater-A/C control harness connector terminal C5 (CJ2) or between connector C2 terminal C (C60) and ground. Does the test lamp light? | -- | Go to Step 22 | Go to Step 23 | ||||
22 | Repair a poor connection or an open in circuit 150 (BLK) between the Heater-A/C control harness connector terminal C1 (CJ2) or between connector C2 terminal K (C60) and G205. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- | ||||
23 | Repair a poor connection or an open in circuit 541 (BRN) between the fuse block terminal B2 and the Heater-A/C control harness connector terminal C5 (CJ2) or between connector C2 terminal C (C60) and ground. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- | ||||
24 | Replace the Heater-A/C Control. Refer to one of the following procedures:
Is the repair complete? | -- | Go to Step 25 | -- | ||||
25 | Verify that the system operates properly. Does the system operate properly? | -- | Go to Symptoms | -- |
