Intake Door

TROUBLE DIAGNOSIS


Intake Door Motor Circuit


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

INSPECTION FLOW






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. Refer to Operational Check.
Can a symptom be duplicated?
YES >> Refer to Initial Inspection and Diagnostic Overview.
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. Refer to LAN System Circuit.
OK or NG
OK >> If the symptom still exists, perform a complete operational check. Refer to Operational Check. If no other symptom exists replace front air control. Refer to 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. Refer to LAN System Circuit.