Air Mix Door Motor

AIR MIX DOOR MOTOR

Description


COMPONENT DESCRIPTION

Air Mix Door Motor





The air mix door motors (1) are attached to the heater & cooling unit assembly. It rotates so that the air mix door is opened or closed to a position set by the unified meter and A/C amp. Motor rotation is then conveyed through a shaft and the air mix door position feedback is then sent to the unified meter and A/C amp. by PBR built-in air mix door motor.







Component Function Check


1. CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK

1.Turn temperature control dial (driver side) clockwise until 32�C (90�F) is displayed.
2.Check for warm air at discharge air outlets.
3.Turn temperature control dial (driver side) counterclockwise until 18�C (64�F) is displayed.
4.Check for cool air at discharge air outlets.
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-4

Perform self-diagnosis STEP-4. Diagnosis Description, see Nos. 1 to 5.
Is it operated normally?
YES- END.
NO-1- Malfunction is detected on driver seat side. GO TO 3.
NO-2- Malfunction is detected on passenger seat side. GO TO 7.

3. CHECK INSTALLATION OF AIR MIX DOOR MOTOR (DRIVER SIDE)

Check installation of air mix door motor (driver side). Exploded View.
Is it installed normally?
YES- GO TO 4.
NO- Repair or replace air mix door motor (driver side).

4. CHECK POWER SUPPLY FOR AIR MIX DOOR MOTOR (DRIVER SIDE)

Check voltage between air mix door motor (driver side) harness connector and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- Repair harness or connector.

5. CHECK SIGNAL FOR AIR MIX DOOR MOTOR (DRIVER SIDE)

Confirm A/C LAN signal between air mix door motor (driver side) harness connector and ground using an oscilloscope.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair harness or connector.

6. CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect air mix door motor (driver side) connector.
3.Check continuity between air mix door motor (driver side) harness connector and ground.





Is the inspection result normal?
YES- Replace air mix door motor (driver side).
NO- Repair harness or connector.

7. CHECK INSTALLATION OF AIR MIX DOOR MOTOR (PASSENGER SIDE)

Check installation of air mix door motor (passenger side). Exploded View.
Is it installed normally?
YES- GO TO 8.
NO- Repair or replace air mix door motor (passenger side).

8. CHECK POWER SUPPLY FOR AIR MIX DOOR MOTOR (PASSENGER SIDE)

Check voltage between air mix door motor (passenger side) harness connector and ground.





Is the inspection result normal?
YES- GO TO 9.
NO- Repair harness or connector.

9. CHECK SIGNAL FOR AIR MIX DOOR MOTOR (PASSENGER SIDE)

Confirm A/C LAN signal between air mix door motor (passenger side) harness connector and ground using an oscilloscope.





Is the inspection result normal?
YES- GO TO 10.
NO- Repair harness or connector.

10. CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect air mix door motor (passenger side) connector.
3.Check continuity between air mix door motor (passenger side) harness connector and ground.





Is the inspection result normal?
YES- Replace air mix door motor (passenger side).
NO- Repair harness or connector.