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 B1250 if there is a short to power in the DR Direction actuator signal harness.

DTC Detecting Condition





Diagnostic Circuit





Signal Waveform

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