Troubleshooting
U-14
Troubleshooting
The areas and steps for inspection are determined according to various malfunctions. Use the chart below to
verify the malfunction symptoms in order to diagnose the related area.
I. Insufficient airflow and/or no airflow from air ports
1
Insufficient airflow and/or no airflow from air ports.
Malfunction
description
1. malfunction in air port or passage
Possible causes
1. malfunction in vent mode system: steps 1-4
2. malfunction in heat mode system: step 5
3. malfunction in defroster mode system: steps 6-8
Troubleshooting procedure
Step Inspection Action
1 Inspect airflow mode control system of front
climate control unit.
l When airflow mode control knob is operated,
check whether appropriate resistance can be felt
and the knob can be moved to its full range freely.
Yes Go to next step.
No Go to step 1 of troubleshooting
index no. 3.
2
Verify whether malfunction is in vent mode or
other modes.
l Does air blow out in vent mode?
Yes Go to step 5.
No Go to next step.
3
Inspect air port.
l Is air port clogged?
Yes Remove obstruction, and then go to
step 9.
No Go to next step.
4
Verify that duct in dashboard is installed.
l Is duct in dashboard properly installed?
Yes Inspect air passage for clogging,
deformity and air leakage, then go
to step 9.
No Install duct securely in the proper
position, then go to step 9.
5
Verify whether malfunction is in heat mode or
defroster mode.
l Does air blow out in heat mode?
Yes Go to next step.
No Check air port for clogging, then go
to step 9.
6 Inspect defroster mode.
l Dose air blow out in defroster mode?
Yes Operation is normal. Recheck
malfunction symptoms.
No Go to next step.
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