Step | Action | Yes | No | ||||||
---|---|---|---|---|---|---|---|---|---|
1 |
Does the odor have a musty smell? | Go to Step 2 | Go to Step 7 | ||||||
2 | Inspect the HVAC filter for debris. Is the HVAC filter clean of debris? | Go to Step 4 | Go to Step 3 | ||||||
3 | Remove any debris from the filter. Is the action complete? | Go to Step 15 | -- | ||||||
4 | Inspect for wet carpeting. Is the carpet wet? | Go to Step 5 | Go to Step 14 | ||||||
5 | Inspect for the following conditions:
Is a leak present? | Go to Step 6 | Go to Step 14 | ||||||
6 | Repair the leak as necessary. Is the repair complete? | Go to Step 15 | -- | ||||||
7 | Does the odor have a coolant smell? | Go to Step 8 | Go to Step 12 | ||||||
8 | Inspect the cooling system for leaks. Refer to Loss of Coolant in Engine Cooling. Is a leak present in the engine compartment? | Go to Step 9 | Go to Step 10 | ||||||
9 | Repair the coolant leak as necessary. Is the repair complete? | Go to Step 15 | -- | ||||||
10 | Inspect for coolant leaking inside the vehicle or for a film build-up on the windshield. Is the condition present? | Go to Step 11 | Go to Step 15 | ||||||
11 | Replace the heater core. Refer to Heater Core Replacement . Is the repair complete? | Go to Step 15 | -- | ||||||
12 | Does the odor have an oily smell? | Go to Step 13 | Go to Step 15 | ||||||
13 |
Is the repair complete? | Go to Step 15 | -- | ||||||
14 | A musty odor can be caused by mold or mildew build up on the evaporator or the heater core or inside of the HVAC module. Refer to Odor Correction . Is the action complete? | Go to Step 15 | -- | ||||||
15 | Operate the system in order to verify the repair. Is the repair complete? | System OK | Go to Step 1 |