Toyota Prius 2010 Repair Manual page 103

DTC B1441/41 Air Mix Damper Control Servo Motor Circuit (Passenger Side)
DESCRIPTION
The air mix control servo motor sends pulse signals to indicate the damper position to the A/C amplifier. The
A/C amplifier activates the motor (normal or reverse) based on these signals to move the air mix damper to any
position. As a result, the amount of air passing through the heater core after passing through the evaporator is
adjusted, and the temperature of the air blowing toward the passenger side is controlled.
The A/C amplifier communicates with the servo through a communication/driver IC and wiring assembly called
the air conditioning harness.
HINT:
Confirm that no mechanical problem is present because this DTC can be stored when either a damper link or the
damper is mechanically locked.
DTC No.
Air mix damper position sensor value does not change even if A/C
B1441/41
amplifier operates air mix control servo motor
WIRING DIAGRAM
INSPECTION PROCEDURE
2010 Toyota Prius
DTC Detection Condition Trouble Area
Air mix control servo
motor
Air conditioning
harness
A/C amplifier
Repair Manual