Automatic 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.

White arrow indicates : Vehicle front

- It rotates so that the air mix door is opened or closed to a position set by the auto amp.
- Motor rotation is then conveyed through a shaft and the air mix door position feedback is then sent to the auto amp. by PBR built-in air mix door motor.


Component Function Check


1. CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK

1.Turn temperature control dial clockwise until "32" position.
2.Check for warm air at discharge air outlets.
3.Turn temperature control dial counterclockwise until "18" 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. PERFORM SELF-DIAGNOSIS STEP-2

Perform self-diagnosis STEP-2. Refer to "Diagnosis Description" Reading and Clearing Diagnostic Trouble Codes, see Nos. 1 to 3.
Is the inspection result normal?
YES- GO TO 2.
NO- Go to appropriate malfunctioning sensor circuit. Refer to "Diagnosis Description" Reading and Clearing Diagnostic Trouble Codes, see
No. 7.

2. PERFORM SELF-DIAGNOSIS STEP-4

Perform self-diagnosis STEP-4. Refer to "Diagnosis Description" Reading and Clearing Diagnostic Trouble Codes, see Nos.1 to 6.
Is it operated normally?
YES- INSPECTION END
NO- GO TO 3.

3. CHECK AIR MIX DOOR MOTOR

Check air mix door motor is properly installed. Refer to "Exploded View" Door Motor.
Is it installed normally?
YES- GO TO 4.
NO- 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.