Troubleshotting
U-25
Viii. Airflow mode of rear air port does not change.
8
Airflow mode of rear air port does not change.
Malfunction
symptom
Malfunction in airflow control system of rear a/c unit.
Possible causes
Malfunction in air control link or air control rocker of rear a/c unit. Step 1
l Malfunction in ig1 signal circuit of airflow mode control actuator. Step 3
l Malfunction in signal circuit of rear climate control unit of airflow mode control
actuator. Steps 4, 5 and 6
l Malfunction in airflow mode door of rear a/c unit. Steps 7 and 8
When performing an (*) marked troubleshooting, shake the wiring harness and connectors to verify whether
the intermittent malfunctions are caused by poor contact. If there is any problem, make sure connectors,
terminals and wiring harness are connected correctly and undamaged.
Troubleshooting procedure
Step Inspection Action
1
Inspect the airflow mode actuator of rear a/c
unit.
l Remove airflow mode actuator of rear a/c
unit.
l Inspect following items of airflow mode
links and rockers.
— Is there grease on the links and rockers?
— Are links and rockers installed in proper
positions?
l Are all above items normal?
Yes Go to next step.
No Apply grease or install links and rockers
firmly in proper positions, go to step 9.
2
Verify whether malfunction is in airflow
mode actuator or rear a/c unit airflow control
valve.
l Turn the ignition switch to on position.
l Set rear main fan switch at 3rd position.
l Can airflow mode (vent，bi-level and heat)
be changed smoothly with airflow link
operated manually?
Yes Go to next step.
No Go to step 7.
*3
Inspect continuity of wiring harness between
fuse block and air mix actuator.
l Measure voltage of terminal f (motor
driving) of airflow mode actuator.
l Is voltage close to b+ (positive battery
voltage)?
Yes Go to next step.
No Repair wiring harness between fuse
block and airflow module actuator, and
then go to step 9.
To Next Page
Loading...