Pathfinder 4WD V6-4.0L (VQ40DE) (2006)
Component Parts
Mode door control system components are:
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Front air control
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Mode door motor
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PBR (built into mode door motor)
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Intake sensor
System Operation
The mode door position (vent, B/L, foot, D/F, and defrost) is set by the front air control by means of the mode door motor. When a mode door position is
selected on the front air control, voltage is applied to one circuit of the mode door motor while ground is applied to the other circuit, causing the mode
door motor to rotate. The direction of rotation is determined by which circuit has voltage applied to it, and which one has ground applied to it. The front
air control monitors the mode door position by measuring the voltage signal on the PBR circuit.
COMPONENT DESCRIPTION
Mode Door Motor
The mode door motor is attached to the heater and cooling unit assembly. It rotates so that air is discharged from the outlet as indicated by the front air
control. Motor rotation is conveyed to a link which activates the mode door.