Suzuki XL7 2007 Service Manual page 1851

• The following could cause window fogging:
– Wet carpet or mats
– High humidity
– Interior water leak
– Blocked A/C evaporator drain tube
– Maximum passenger capacity
– Blocked body pressure relief valves
• Inspect the air distribution system for causes of
reduced air flow:
– Obstructed or dirty passenger compartment air
filter, if equipped
– Blocked or damaged air inlet or outlet vents
Intermittent
Faulty electrical connections or wiring may be the cause
of intermittent conditions. Refer to "Testing for
Intermittent Conditions and Poor Connections: ".
Odor Diagnosis
Step
DEFINITION: Odor originating or noticed through the HVAC system.
Were you sent here from Symptoms or another diagnostic
1 table?
1. Sit inside the vehicle.
2. Close all of the doors and windows.
3. Start the engine.
4. Allow the engine idle at normal operating temperature.
5. Select the maximum blower speed.
6. Select the PANEL air outlet mode.
2
7. Select the coldest temperature setting.
8. Cycle through all of the blower speeds, modes and
temperatures to define what type of odor is present.
– Musty smell
– Coolant smell
– Oil smell
Does the odor have a musty smell?
Inspect the HVAC filter and the air inlet grille for debris.
3
Is debris present?
Remove any debris.
4
Is the action complete?
Inspect for wet carpeting.
5
Is the carpet wet?
Inspect for the following conditions:
• Water leaks around the windshield
6
• Blockage of the HVAC module drain
• Leaks around the door seals
Is a leak present?
Repair the leak as necessary.
7
Is the repair complete?
8 Does the odor have a coolant smell?
Symptom List
Refer to a symptom diagnostic procedure from the
following list in order to diagnose the symptom:
• "Blower Motor Malfunction"
• "Auxiliary Blower Motor Malfunction"
• "Air Conditioning Compressor Malfunction"
• "Too Hot in Vehicle"
• "Too Cold in Vehicle"
• "Too Hot in Vehicle - Auxiliary"
• "Too Cold in Vehicle - Auxiliary"
• "Air Delivery Improper"
• "Air Delivery Improper - Auxiliary"
• "Air Recirculation Malfunction"
• "Leak Testing"
• "Noise Diagnosis - HVAC Module"
• "Noise Diagnosis - Air Conditioning (A/C) System"
• "Noise Diagnosis - Blower Motor"
• "Odor Diagnosis"
Action
Heating, Ventilation and Air Conditioning:
Yes
Go to Step 2
Go to Step 3
Go to Step 4
Go to Step 15
Go to Step 6
Go to Step 7
Go to Step 15
Go to Step 9
7A-37
No
Go to "Symptoms -
HVAC Systems -
Automatic"
Go to Step 8
Go to Step 5
—
Go to Step 14
Go to Step 14
—
Go to Step 12