General Information

Component Location





General Description

The mode control actuator mounted on heater unit adjusts position of mode door by operating Direction Motor based on 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





Diagnostic Circuit





Signal Waveform

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