The Air Mix actuator contains a motor that changes temp door position and a potentiometer that monitors position of temp door. The Air mix actuator(Temperature actuator) regulates the temperature by operating temp door motor. The potentiometer delivers temp door position to the A/C ECU .
The 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 40 seconds.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
–
Voltage check. | 1. Open or short in motor power circuit. 2. Faulty Driver air mix actuator. 3. Faulty air conditioner control module. |
Enable Conditions |
–
Ignition ON. | |
Threshold value |
–
No movement to controlled mode position for 40 seconds. | |
Failsafe |
–
Fixed as current position. |
※ Voltage value of Air Mix potentiometer as a function of temp door position.
Door position | Voltage |
Max. cool | 0.3±0.15V |
Max. warm | 4.7±0.15V |
