Diagnosis Procedure

AIR MIX DOOR MOTOR


WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Description


COMPONENT DESCRIPTION

Air Mix Door Motor





The air mix door motor (1) is attached to the heater & cooling unit assembly. It rotates so that the air mix door is opened or closed to a position set by the unified meter and A/C amp. Motor rotation is then conveyed through a shaft and the air mix door position feedback is then sent to the unified meter and A/C amp. by PBR built-in air mix door motor.

White arrow : Vehicle front




AIR MIX DOOR MOTOR


WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Procedure

1.PERFORM SELF-DIAGNOSIS STEP-2
Perform self-diagnosis STEP-2. , see Nos. 1 to 2.
Does code No. 20 appear on the display.
YES - GO TO 2.
NO - Go to appropriate malfunctioning sensor circuit. , see No. 11.
2.PERFORM SELF-DIAGNOSIS STEP-4
Perform self-diagnosis STEP-4. , see Nos. 1 to 5.
Is it operated normally?
YES - END.
NO - GO TO 3.
3.CHECK INSTALLATION OF AIR MIX DOOR MOTOR
Check installation of air mix door motor. Exploded View.
Is it installed normally?
YES - GO TO 4.
NO - Repair or replace air mix door motor.
4.CHECK POWER SUPPLY FOR AIR MIX DOOR MOTOR
Check voltage between air mix door motor harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair harness or connector.
5.CHECK SIGNAL FOR AIR MIX DOOR MOTOR
Confirm A/C LAN signal between air mix door motor harness connector and ground using an oscilloscope.





Is the inspection result normal?
YES - GO TO 6.
NO - Repair harness or connector.
6.CHECK AIR MIX DOOR MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect air mix door motor connector.
3. Check continuity between air mix door motor harness connector and ground.





Is the inspection result normal?
YES - Replace air mix door motor.
NO - Repair harness or connector.