
COMMENTS ON TROUBLE SYMPTOM
PROBABLE CAUSE
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III actuator test
Q.
Does the blower motor work normally?

STEP 2. Connector check: B-11 inside/outside air selection damper control motor connector


Q.
Is the check result normal?

STEP 3. Voltage measurement at B-11 inside/outside air selection damper control motor connector.



Q.
Is the check result normal?


STEP 4. Check the wiring harness between B-11 inside/outside air selection damper control motor connector terminal No.1 and the ignition switch (IG2).




Q.
Is the check result normal?

STEP 5. Check the inside/outside air selection damper control motor.

Q.
Is the inside/outside air selection damper control motor in good condition?

STEP 6. Connector check: B-113 A/C-ECU connector


Q.
Is the check result normal?

STEP 7. Check the wiring harness between B-113 A/C-ECU connector (terminals 17 and 9) and B-11 inside/outside air selection damper control motor connector (terminals 4 and 5).




Q.
Is the check result normal?

STEP 8. Check whether the diagnosis code is reset.
Q.
Is the diagnosis code set?
