DTC B1442: Air Inlet Damper Control Servo Motor Circuit [12/2013 - ]: Description
The blower damper servo sub-assembly (air inlet) 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 air inlet mode selection blower damper servo sub-assembly (air inlet) to the appropriate position, which controls the air inlet mode (fresh, recirculation/fresh, and recirculation).
The air conditioning amplifier assembly communicates with the servo through a communication/driver IC and wiring assembly called the air conditioning harness assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory |
|---|---|---|---|---|
| B1442 | Air Inlet Damper Control Servo Motor Circuit | Air inlet damper position sensor value does not change even if air conditioning amplifier assembly operates blower damper servo sub-assembly (air inlet) |
|
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. | ||||