Step | Action | Yes | No |
---|---|---|---|
DEFINITION: Noise originating from the blower motor. | |||
1 | Were you sent here from Symptoms or another diagnostic table? | Go to Step 2 | |
2 | Inspect the air inlet grille for debris. Is debris present? | Go to Step 8 | Go to Step 3 |
3 |
Is a noise evident during the blower operation? | Go to Step 4 | Go to Step 11 |
4 | Inspect for excessive vibration at each blower motor speed by feeling the blower case. Is excess vibration present? | Go to Step 6 | Go to Step 5 |
5 | Listen to the blower motor at each speed. Is the blower motor making a squeaking or chirping noise? | Go to Step 9 | Go to Step 11 |
6 |
Did you find any foreign material on the blower motor or blower motor impeller? | Go to Step 8 | Go to Step 7 |
7 | Inspect the blower motor for the following conditions:
Did you find any of these conditions? | Go to Step 9 | Go to Step 10 |
8 | Remove the foreign material. Is the action complete? | Go to Step 10 | -- |
9 | Replace the blower motor. Refer to Blower Motor Replacement . Is the repair complete? | Go to Step 11 | -- |
10 | Install the blower motor. Refer to Blower Motor Replacement . Is the action complete? | Go to Step 11 | -- |
11 | Operate the system in order to verify the repair. Did you find and correct the condition? | System OK | Go to Step 2 |