Step | Action | Yes | No | ||||||||||||
1 | Were you sent here from Symptoms or another diagnostic table? | Go to Step 2 | Go to Symptoms - HVAC Systems - Manual in HVAC Systems - Manual or Symptoms - HVAC Systems - Automatic in HVAC Systems - Automatic | ||||||||||||
2 |
Is a scrape or pop noise evident when selecting modes or temperature settings? | Go to Step 4 | Go to Step 3 | ||||||||||||
3 | Is a tick/click, chirping, groaning, air rush/whistle or scraping noise present, but decreases as blower motor speed is decreased? | Go to Step 4 | |||||||||||||
4 | Remove the instrument panel (I/P) carrier. Refer to Instrument Panel Carrier Replacement in Instrument Panel, Gages, and Console. Is the action complete? | Go to Step 5 | -- | ||||||||||||
5 |
Were any of these conditions found? | Go to Step 6 | Go to Step 7 | ||||||||||||
6 | Remove any obstructions or foreign material found. Is the action complete? | Go to Step 11 | -- | ||||||||||||
7 | Inspect the mode, temperature, and air inlet doors and seals for warping or cracking. Are the doors in operating properly? | Go to Step 9 | Go to Step 8 | ||||||||||||
8 | Replace the appropriate door and/or seals. Is the repair complete? | Go to Step 11 | -- | ||||||||||||
9 | Inspect the mode, temperature and air inlet door actuators. Are the actuators operating properly? | Go to Step 11 | Go to Step 10 | ||||||||||||
10 | Replace the appropriate actuator. Is the action complete? | Go to Step 11 | -- | ||||||||||||
11 | Install the I/P carrier. Refer to Instrument Panel Carrier Replacement in Instrument Panel, Gages, and Console. Is the action complete? | Go to Step 12 | -- | ||||||||||||
12 | Operate the system to verify the repair. Did you find and correct the condition? | System OK | Go to Step 2 |