Automatic Air Conditioning

MODE DOOR MOTOR

Description


COMPONENT DESCRIPTION

Mode Door Motor





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

White arrow indicates : Vehicle front

- It rotates so that air is discharged from the outlet set by the auto amp.
- Motor rotation is conveyed to a link which activates the mode door.


Component Function Check


1. CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK

1.Turn mode control dial to each position.
2.Confirm that discharge air comes out according to the air distribution table. Refer to "System Description" System Description.
NOTE:
Confirm that the magnet clutch is engaged (Sound or visual inspection) and intake door position is at FRE when DEF or D/F is selected.
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 lamp ON: GO TO 3.
NO-2- FRE indicator lamp ON: Refer to "Diagnosis Procedure" Automatic Air Conditioning.

3. CHECK POWER SUPPLY FOR MODE DOOR MOTOR

Check voltage between mode door motor harness connector and ground.





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

4. CHECK SIGNAL FOR MODE DOOR MOTOR

Confirm A/C LAN signal between mode 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 MODE DOOR MOTOR GROUND CIRCUIT

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





Is the inspection result normal?
YES- Replace mode 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 it operated normally?
YES- INSPECTION END
NO- GO TO 7.

7. CHECK MODE DOOR CONTROL LINKAGE

Check mode 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.