Manual Air Conditioning

AIR MIX DOOR MOTOR

Description


COMPONENT DESCRIPTION

Air Mix Door Motor





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

White arrow indicates : Vehicle front



Component Function Check


1. CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK

1.Turn temperature control dial clockwise until full hot position after warming up the engine.
2.Check for warm air at discharge air outlets.
3.Turn temperature control dial counterclockwise until full cold position.
4.Check for cool air at discharge air outlets.
Is the inspection result normal?
YES- INSPECTION END
NO- Go to diagnosis procedure. Refer to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK AIR MIX DOOR MOTOR

Check air mix door motor. Refer to "Exploded View" Door Motor.
Is it installed normally?
YES- GO TO 2.
NO- Replace air mix door motor.

2. CHECK POWER SUPPLY FOR AIR MIX DOOR MOTOR

1.Turn ignition switch ON.
2.Check voltage between air mix door motor harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair harness or connector.

3. 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 4.
NO- Repair harness or connector.

4. 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.