Diesel Data: Automotive Repair

General Information





Air Conditioner
B2406 Air Mix Motor-Driver - General Information

Component Location





General Description

The temperature control actuator is located at the heater unit. The actuator consists of a motor and feedback potentiometer that is used by the A/C ECU to control air temperature and to monitor actuator operation. The Air mix actuator(Temperature actuator) regulates the temperature by the procedure as follows. Signal from control unit adjusts position of temp door by operating temp motor and then temperature will be regulated by the hot/cold air ratio decided by position of temp door. In operation, potentiometer delivers temp door position transformed into voltage value to A/C ECU.

DTC Description

Air conditioner Control Module sets DTC B2406 if Driver air mix actuator has not been moved to the mode,where air condition control module controls, within 10 seconds.

DTC Detecting Condition





Specification

** Voltage value of Air Mix potentiometer as a function of temp door position.






Diagnostic Circuit Diagram