Intake Door Motor Circuit

TROUBLE DIAGNOSIS


Intake Door Motor Circuit


SYMPTOM:
- Intake door does not change.
- Intake door motor does not operate normally.

INSPECTION FLOW






1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - REC ( )
1. Press REC ( ) switch. Recirculation indicator should illuminate.
2. Press REC ( ) switch again. The REC ( ) indicator should go out.
3. Listen for intake door position change (blower sound should change slightly).
Can a symptom be duplicated?
YES - GO TO 3.
NO - GO TO 2.
2.PERFORM COMPLETE OPERATIONAL CHECK
Perform a complete operational check and check for any symptoms. Operational Check.
Can a symptom be duplicated?
YES - How To Perform Trouble Diagnosis For Quick And Accurate Repair.
NO - System OK.
3.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
- GO TO 4.
4.CHECK INTAKE DOOR OPERATION
Check and verify intake door mechanism for smooth operation in each mode.
OK or NG
OK - GO TO 5.
NG - Repair as necessary.
5.CHECK LAN SYSTEM CIRCUIT
Perform diagnostic procedure for the LAN system. LAN System Circuit.
OK or NG
OK - If the symptom still exists, perform a complete operational check. Operational Check. If no other symptom exists replace front air control. Service and Repair.
NG - Repair as necessary.

SYSTEM DESCRIPTION

Component Parts

Intake door control system components are:
- Front air control
- Intake door motor

System Operation
The intake door control determines intake door position based on the position of the recirculation switch.
When the front air control is set to DEFROST, or OFF, the front air control sets the intake door at the fresh position.






COMPONENT DESCRIPTION

Intake door motor





The intake door motor (1) is attached to the intake unit. It rotates so that air is drawn from inlets set by the front air control. Motor rotation is conveyed to a lever which activates the intake door. Door position is then fed back to the front air control by PBR built-in air mix door motor.

DIAGNOSTIC PROCEDURE
SYMPTOM: Intake door motor does not operate normally.
Perform diagnostic procedure for LAN system circuit. LAN System Circuit.