Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: HVAC switch illumination is inoperative when the park lamps are turned on, but there is no problem with the IP cluster illumination. | ||||
1 | Review the HVAC switch illumination operation and perform the necessary inspections. Did you complete the system review and inspection? | -- | Go to Step 2 | Go to Symptoms |
2 | Turn on the park lamps and observe the HVAC switch illumination. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Is the voltage at the HVAC control module connector equal to the voltage at the ILLUM fuse? | -- | Go to Step 5 | Go to Step 4 |
4 | Repair the open CKT 8 (GRY) between the ILLUM fuse and the HVAC control module. Did you complete the repair? | -- | Go to Step 8 | -- |
5 | At the HVAC control module connector, test for continuity between ground and cavity B. Is continuity present? | -- | Go to Step 7 | Go to Step 6 |
6 | Repair the open CKT 150 (BLK) between ground and the HVAC control module. Did you complete the repair? | -- | Go to Step 8 | -- |
7 | Replace the HVAC control module. Did you complete the repair? | -- | Go to Step 8 | -- |
8 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
