id0703c2800500
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2
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Amount of air blown from vents does not change.
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DESCRIPTION
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• Malfunction in blower system
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POSSIBLE CAUSE
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• Blower relay, blower motor, resistor, airflow volume control dial malfunction
• A/C unit malfunction
• Clogged in A/C unit passage
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Diagnostic procedure
| STEP |
INSPECTION |
ACTION |
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|---|---|---|---|
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1
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INSPECT BLOWER SYSTEM
• Inspect the following systems and electrical parts.
• Are they normal?
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Yes
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Go to the next step.
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No
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Repair or replace the malfunctioning part, then go to Step 5.
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2
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INSPECT TO SEE WHETHER MALFUNCTION IS IN A/C UNIT OR ELSEWHERE
• Turn the ignition switch to the ON position.
• Turn the airflow volume control dial on.
• Recirculate air inside the vehicle.
• Does the blower motor rotate smoothly?
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Yes
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Go to Step 4.
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No
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Go to the next step.
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3
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INSPECT A/C UNIT
• Inspect blower motor.
• Is the fan normal?
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Yes
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Go to the next step.
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No
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Remove obstruction, repair or replace the fan and A/C unit case, then go to Step 5.
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4
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INSPECT A/C UNIT INTAKE VENT
• Is the A/C unit intake vent clogged?
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Yes
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Remove obstruction, then go to the next step.
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No
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Inspect if there are any obstructions in the A/C unit passage, then go to the next step.
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5
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VERIFY THAT MALFUNCTION SYMPTOM OCCURS 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 the malfunction recurs.
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