Manual Air Conditioning

INTAKE DOOR MOTOR

Description


COMPONENT DESCRIPTION

Intake Door Motor





- The intake door motor (1) is attached to the A/C unit assembly.
- It rotates so that air is drawn from inlets set by the A/C amp.
- Motor rotation is conveyed to a lever which activates the intake door.

White arrow indicates : Vehicle front



Component Function Check


1. CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK

1.Press REC switch. Recirculation indicator lamp turns ON.
2.Press REC switch again. Recirculation indicator lamp turns OFF.
3.Listen for intake door position change. (Slight change of blower sound can be heard.)
Is the inspection result normal?
YES- INSPECTION END
NO- Go to diagnosis procedure. Refer to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK INTAKE DOOR CONTROL LINKAGE

Check intake door control linkage. Refer to "Exploded View" Door Motor.
Is it installed normally?
YES- GO TO 2.
NO- Repair or adjust control linkage.

2. CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR

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





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

3. CHECK SIGNAL FOR INTAKE DOOR MOTOR

Confirm A/C LAN signal between intake 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 INTAKE DOOR MOTOR GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect intake door motor connector.
3.Check continuity between intake door motor harness connector and ground.





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