NO.1 INSUFFICIENT AIR (OR NO AIR) BLOWN FROM FRONT VENTS

id070300801300

1 | Insufficient air (or no air) blown from front vents
DESCRIPTION | • Problem with each vent and/or duct • Front airflow mode does not change when switching front mode switch.
POSSIBLE CAUSE | • Malfunction in front airflow mode actuator • Malfunction in front VENT mode system • Malfunction in front HEAT mode system • Malfunction in front DEFROSTER mode system

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT FRONT AIRFLOW MODE ACTUATOR • Is it okay? | Yes | Go to the next step.
No | Repair or replace malfunctioning part in accordance with inspection result.
2 | INSPECT TO SEE WHETHER MALFUNCTION IS IN FRONT VENT MODE OR OTHER MODES • Does air blow out when in the front VENT mode? | Yes | Go to Step 5.
No | Go to the next step.
3 | INSPECT FRONT VENT • Is the front vent clogged? | Yes | Remove obstruction, then go to Step 9.
No | Go to the next step.
4 | VERIFY THAT DUCT IN DASHBOARD IS INSTALLED • Is the duct in the dashboard properly installed? | Yes | Inspect the duct for clogging, deformation and air leakage, then go to Step 9.
No | Install the duct securely in the proper position, then go to Step 9.
5 | INSPECT TO SEE WHETHER MALFUNCTION IS IN FRONT HEAT MODE OR FRONT DEFROSTER MODE • Does air blow out when in the front HEAT mode? | Yes | Go to the next step.
No | Inspect the vent for clogging, then go to Step 9.
6 | INSPECT FRONT DEFROSTER MODE • Does air blow out when in the front DEFROSTER mode? | Yes | Operation is normal. Recheck malfunction symptoms.
No | Go to the next step.
7 | INSPECT FRONT VENT • Is the vent clogged? | Yes | Remove obstruction, then go to Step 9.
No | Go to the next step.
8 | VERIFY THAT DEFROSTER DUCT IS INSTALLED • Is the defroster duct properly installed? | Yes | Inspect the duct for clogging, deformation, and air leakage, then go to the next step.
No | Install the duct securely in proper position, then go to the next step.
9 | VERIFY REPAIR • Does air blow out? | Yes | Troubleshooting completed. Explain repairs to customer.
No | Recheck malfunction symptoms, then repeat from Step 1 if the malfunction recurs.