NO.1 INSUFFICIENT BLOWN AIR VOLUME AND/OR NO BLOWN AIR DEPENDING ON AIRFLOW MODE.
id070300804200
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1
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Insufficient air (or no air) blown from vents.
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DESCRIPTION
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• Problem with each vent and/or duct.
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POSSIBLE CAUSE
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• Malfunction in VENT mode system (Steps 1—4)
• Malfunction in HEAT mode system (Step 5)
• Malfunction in DEFROSTER mode system (Steps 6—8)
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY THAT MALFUNCTION CONDITION
• When airflow mode control dial is operated, is appropriate resistance felt and can it be moved throughout its full range?
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Yes
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Go to next step.
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No
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Go to symptom troubleshooting No.3 airflow mode does not change.
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2
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INSPECT TO SEE WHETHER MALFUNCTION IS IN VENT MODE OR OTHER SYSTEM
• Does air blow out when in VENT mode?
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Yes
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Go to Step 5.
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No
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Go to next step.
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3
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INSPECT VENT
• Is vent clogged?
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Yes
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Remove the obstruction, then go to Step 9.
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No
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Go to the next step.
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4
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VERIFY THAT DUCT IN DASHBOARD IS INSTALLED
• Is duct in dashboard properly installed?
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Yes
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Inspect duct for clogging, deformity and air leakage, then go to Step 9.
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No
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Install duct securely in the proper position, then the go to Step 9.
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5
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INSPECT TO SEE WHETHER MALFUNCTION IS IN HEAT MODE OR DEFROSTER MODE
• Does air blow out when HEAT mode?
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Yes
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Go to the next step.
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No
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Inspect vent for clogging, then go to Step 9.
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6
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INSPECT DEFROSTER MODE
• Does air blow out when in DEFROSTER mode?
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Yes
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Operation is okay.
Recheck malfunction symptoms.
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No
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Go to the next step.
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7
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INSPECT VENT
• Is vent clogged?
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Yes
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Remove obstruction, then go to Step 9.
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No
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Go to the next step.
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8
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VERIFY THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR
• Is defroster duct properly installed?
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Yes
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Inspect duct for clogging, deformity, and air leakage, then go to the next step.
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No
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Install duct securely in the proper position, then go to the next step.
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9
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VERIFY THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR
• Does air blow out?
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Yes
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Troubleshooting completed.
Explain repairs to customer.
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No
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Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.
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