Diesel Data: Automotive Repair

B1441

DTC B1441 AIR MIX DAMPER CONTROL SERVOMOTOR CIRCUIT (PASSENGER SIDE)

CIRCUIT DESCRIPTION


Detection Item:




The air mix control servomotor (air mix damper servo sub-assembly) is controlled by the A/C amplifier. The air mix control servomotor moves the air mix damper by rotating (normal, reverse) the motor with electrical power from the A/C amplifier.

This adjusts the mix ratio of the air that passes through the evaporator and heater core and controls the airflow temperature. Air flow temperature changes when moving the air mix damper to the target point. The target point can be detected with the air mix damper position sensor.

Wiring Diagram:






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INSPECTION PROCEDURE