Automatic Air Conditioning

INTAKE DOOR MOTOR

Description


COMPONENT DESCRIPTION

Intake Door Motor





- The intake door motor (1) is attached to the A/C unit assembly.

White arrow indicates : Vehicle front

- It rotates so that air is drawn from inlets set by the auto amp.
- Motor rotation is conveyed to a lever which activates the intake door.


Component Function Check


1. CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK

1.Press intake switch.
2.REC indicator turns ON.
3.Listen for intake door position change. (Slight change of blower sound can be heard.)
4.Press intake switch again.
5.FRE indicator turns ON.
6.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. 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-3

Perform self-diagnosis STEP-3. Refer to "Diagnosis Description" Reading and Clearing Diagnostic Trouble Codes, see Nos. 1 to 4.
Is the inspection result normal?
YES- GO TO 6.
NO-1- REC indicator turns ON: Refer to "Diagnosis Procedure" Automatic Air Conditioning.
NO-2- FRE indicator turns ON: GO TO 3.

3. CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR

Check voltage between intake door motor harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair harness or connector.

4. 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 5.
NO- Repair harness or connector.

5. 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.

6. 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 the inspection result normal?
YES- INSPECTION END
NO- GO TO 7.

7. CHECK INTAKE DOOR CONTROL LINKAGE

Check intake door control linkage is properly installed.
Is it installed normally?
YES- Check each door, lever and link, and repair or replace the malfunctioning parts. Refer to "Exploded View" Door Motor.
NO- Repair or adjust control linkage.