DTC B1441/41: Air Mix Damper Control Servo Motor Circuit (Passenger Side) [10/2014 - ]: Description

The No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)) sends pulse signals to indicate the damper position to the air conditioning amplifier assembly. The air conditioning amplifier assembly activates the motor (normal or reverse) based on these signals to move the No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)) to the appropriate position. This adjusts the amount of air passing through the heater core after passing the evaporator and controls the temperature of the output air.

The air conditioning amplifier assembly communicates with the servo through a communication/driver IC and wiring assembly called the air conditioning harness assembly.