Toyota Prius 2010 Repair Manual page 111

DTC B1443/43 Air Outlet Damper Control Servo Motor Circuit
DESCRIPTION
The air outlet 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 mode damper to any
position, which controls the air outlet switching.
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 outlet damper position sensor value does not change even if A/C
B1443/43
amplifier operates air outlet control servo motor
WIRING DIAGRAM
INSPECTION PROCEDURE
2010 Toyota Prius
DTC Detection Condition Trouble Area
Air outlet control
servo motor
Air conditioning
harness
A/C amplifier
Repair Manual