Manual Air Conditioning

MODE DOOR MOTOR

Description


COMPONENT DESCRIPTION

Mode Door Motor





- The mode door motor (1) is attached to the A/C unit assembly.
- It rotates so that air is discharged from the outlet set by the A/C
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 at below. System Description.
NOTE:
Confirm that the magnet clutch is engaged (Sound or visual inspection) when MAX A/C is selected.
Is the inspection result normal?
YES- INSPECTION END
NO- Go to diagnosis procedure. .


Diagnosis Procedure


1. CHECK MODE DOOR CONTROL LINKAGE

Check mode door control linkage. Door Motor.
Is it installed normally?
YES- GO TO 2.
NO- Repair or adjust control linkage.

2. CHECK POWER SUPPLY FOR MODE DOOR MOTOR

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





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

3. 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 4.
NO- Repair harness or connector.

4. 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.