Mode Door Motor

MODE DOOR MOTOR

Description


COMPONENT DESCRIPTION

Mode Door Motor





The mode door motor (1) are attached to the heater & 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.







Component Function Check


1. CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK

1.Press MODE switch(es) and DEF switch.
2.Each position indicator should change shape.
3.Confirm that discharge air comes out according to the air distribution table at below. Air Distribution.
NOTE:
Confirm that the compressor 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- END.
NO- Go to diagnosis procedure. .


Diagnosis Procedure


1. PERFORM SELF-DIAGNOSIS STEP-2

Perform self-diagnosis STEP-2. Diagnosis Description, see Nos. 1 to 2.
Does code No. 20 appear on the display?
YES- GO TO 2.
NO- Go to appropriate malfunctioning sensor circuit. Diagnosis Description, see
No. 11.

2. PERFORM SELF-DIAGNOSIS STEP-3

Perform self-diagnosis STEP-3. Diagnosis Description, see Nos. 1 to 3.
Does code No. 30 appear on the display?
YES- GO TO 6.
NO-1- Code No. 31 or 32 appear on the display: GO TO 3.
NO-2- Code No. 37, 38 or 39 appear on the display: Refer to Intake Door Motor Circuit. Intake Door Motor.

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. Diagnosis Description, see Nos. 1 to 5.
Is it operated normally?
YES- END.
NO- GO TO 7.

7. CHECK MODE DOOR CONTROL LINKAGE

Check mode door control linkage.
Is it installed normally?
YES- Exploded View.
NO- Repair or adjust control linkage.