General Information

B2409 Direction control motor (Driver)

General Information

Component Location





General Description

The mode control actuator mounted on heater unit adjusts position of mode door by operating Direction Motor in accordance with signal of A/C control unit. Pressing mode select switch makes the mode control actuator shift in order of vent-> B/L -> floor -> mix.

DTC Description

The ECM sets DTC B2409 if the direction motor doesn't move to intended position within 40 sec (The ECM attempts to move the temp door for a 2 second duration at a frequency of 3 times every 20 seconds before storing a DTC.)

DTC Detecting Condition





Schematic Diagram





Signal Waveform

** Voltage value of Direction potentiometer as a function of position of mode switch