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

id070300800400

1 | Insufficient air (or no air) blown from vents.
DESCRIPTION | • Problem with each vent and/or duct.
POSSIBLE CAUSE | • Malfunction in VENT mode system (Steps 1-4) • Malfunction in HEAT mode system (Step 5) • Malfunction in DEFROSTER mode system (Steps 6-8)

Diagnostic procedure

Step | Inspection | Inspection item (s)
--- | --- | ---
1 | INSPECT TO SEE WHETHER MALFUNCTION IS IN VENT MODE OR OTHER MODES • Does air blow out when in VENT mode? | Yes | Go to Step 4.
No | Go to next step.
2 | INSPECT VENT • Is vent clogged? | Yes | Remove obstruction, then go to Step 8.
No | Go to next step.
3 | VERIFY THAT DUCT IN DASHBOARD IS INSTALLED • Is duct in dashboard properly installed? | Yes | Inspect duct for clogging, deformity and air leakage, then go to Step 8.
No | Install duct securely in the proper position, then go to Step 8.
4 | INSPECT TO SEE WHETHER MALFUNCTION IS IN HEAT MODE OR DEFROSTER MODE • Does air blow out when in HEAT mode? | Yes | Go to next step.
No | Inspect vent for clogging, then go to Step 8.
5 | INSPECT DEFROSTER MODE • Does air blow out when in DEFROSTER mode? | Yes | Operation is normal. Recheck malfunction symptoms.
No | Go to next step.
6 | INSPECT VENT • Is vent clogged? | Yes | Remove obstruction, then go to Step 8.
No | Go to next step.
7 | VERIFY THAT DEFROSTER DUCT IS INSTALLED • Is defroster duct properly installed? | Yes | Inspect duct for clogging, deformity, and air leakage, then go to next step.
No | Install duct securely in proper position, then go to next step.
8 | CONFIRM THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR • Does air blow out? | Yes | Troubleshooting completed. Explain repairs to customer.
No | Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.