Intake Door Motor Circuit
Intake Door Motor CircuitSYMPTOM:
- Intake door does not change.
- Intake door motor does not operate normally.
Step 1-6:
INSPECTION FLOW
SYSTEM DESCRIPTION
Component Parts
Intake door control system components are:
- Front air control
- Intake door motor
- In-vehicle sensor
- Ambient sensor
- Optical sensor
- Intake sensor
System Operation
The intake door control determines the intake door position based on the position of the recirculation switch. When the recirculation switch is depressed the intake door motor rotates closing off the fresh air inlet and recirculating the cabin air. If the recirculation switch is depressed again, the intake door motor rotates in the opposite direction, again allowing fresh air into the cabin.
In the AUTO mode, the front air control determines the intake door position based on the ambient temperature, the intake air temperature and the in-vehicle temperature. When the DEF, D/F, FLOOR or OFF switches are pushed, the front air control sets the intake door at the fresh position.
Intake Door Control Specification
COMPONENT DESCRIPTION
Intake door motor
The intake door motor is attached to the intake unit assembly. 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.
Step 1-2:
Step 3-5:
DIAGNOSTIC PROCEDURE FOR INTAKE DOOR MOTOR