Diagnosis Procedure

MODE DOOR MOTOR


Description


COMPONENT DESCRIPTION

Mode Door Motor
The mode door motor (1) is attached to the heater and cooling unit assembly. It rotates so that air is discharged from the outlet set by the unified meter and A/C amp. Motor rotation is conveyed to a link which activates the mode door.










MODE DOOR MOTOR


Diagnosis Procedure

1.CHECK MODE DOOR CONTROL LINKAGE
Check mode door control linkage is properly installed. Refer to Exploded View.
Is it installed normally?
YES - GO TO 2.
NO - Repair or adjust control linkage.
2.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 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.