DTC B1457: Driver Side Air Outlet Damper Control Servo Motor Circuit [12/2013 - 11/2016]: Description
The rear air mix damper servo sub-assembly sends pulse signals to inform the air conditioning amplifier assembly of the damper position. The air conditioning amplifier assembly activates the motor (normal or reverse) based on these signals to move the rear air mix damper servo sub-assembly to the appropriate 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 rear side is controlled.
The air conditioning amplifier assembly communicates with the servo through a communication/driver IC and wiring assembly called the No. 2 air conditioning harness assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory |
|---|---|---|---|---|
| B1457 | Driver Side Air Outlet Damper Control Servo Motor Circuit | Rear air mix damper position sensor value does not change even if air conditioning amplifier assembly operates rear air mix damper servo sub-assembly |
|
Memorized (30 sec. or more)*1 |
| *1: The air conditioning amplifier assembly stores this DTC if the malfunction has occurred for the period of time indicated in the brackets. | ||||