Service Manual

SiUS281811E Symptom-based Troubleshooting
Part 6 Service Diagnosis 173
Error diagnosis of "Louver operation different from setting"
Normal
Reset (Cancel)
individual airflow.
Is the individual
airflow set?
Is the
airflow direction set to
automatic?
Is the
wire harness
broken?
YES
YES
NO
NO
NO
NO
NO
Replace the step
motor. (Motor failure)
YES
Replace the wire
harness.
YES
Is the connection
of the step motor
connector normal?
Is the
automatic draft prevention
function "enabled"?
YES
Normal
Automatic draft
prevention function
switches flap to
horizontal position
when human
presence is detected.
Connect to the
connector
correctly before
action verification.