Suzuki XL7 2007 Service Manual page 1862

7A-48 Heating, Ventilation and Air Conditioning:
Noise Diagnosis - Blower Motor
Step
DEFINITION: Noise originating in the blower motor
Were you sent here from Symptoms or another diagnostic
1 table?
Inspect the air inlet grille for debris.
2
Is debris present?
1. Sit inside the vehicle.
2. Close the vehicle doors and windows.
3. Turn ON the ignition, with the engine OFF.
3
4. Cycle the blower motor through all of the speeds and
modes in order to determine where and when the noise
occurs.
Is a noise evident during the blower operation?
Inspect for excessive vibration at each blower motor speed by
4 feeling the blower case.
Is excess vibration present?
Listen to the blower motor at each speed.
5
Is the blower motor making a squeaking or chirping noise?
1. Remove the blower motor. Refer to "Blower Motor
Replacement".
2. Inspect the blower motor impeller for deposits of foreign
6 material.
3. Inspect the blower motor for deposits of foreign material.
Did you find any foreign material on the blower motor or
blower motor impeller?
Inspect the blower motor for the following conditions:
• Cracked blades
7
• A loose impeller retainer
• Improper impeller alignment
Did you find any of these conditions?
Remove the foreign material.
8
Is the action complete?
Replace the blower motor. Refer to "Blower Motor
9 Replacement".
Is the repair complete?
Install the blower motor. Refer to "Blower Motor Replacement".
10
Is the action complete?
Operate the system in order to verify the repair.
11
Did you find and correct the condition?
Action Yes
Go to "Symptoms -
Go to Step 2 HVAC Systems -
Automatic"
Go to Step 8 Go to Step 3
Go to Step 4 Go to Step 11
Go to Step 6 Go to Step 5
Go to Step 9 Go to Step 11
Go to Step 8 Go to Step 7
Go to Step 9 Go to Step 10
Go to Step 10
Go to Step 11
Go to Step 11
System OK Go to Step 2
No
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