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Component Location

General Description

Temperature control actuator located at heater unit. It contains temp motor that changes temp door position and potentiometer that monitors position of temp door.Temperature control 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 Feedback signal of Driver air mix actuator has not been moved to the mode,where air condition control module controls, within 10 seconds.

DTC Detecting Condition

Item	Detecting Condition	Possible Cause
DTC Strategy	• Voltage check	1. Poor contact in harness 2. Open or short in motor power circuit 3. Faulty Driver air mix actuator 4. Faulty air conditioner control module
Enable Conditions	• IG KEY ON
Threshold value	• No movement to controlled mode position for 10 seconds.
Failsafe	• Fixed as current position

Specification

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

Door position	Voltage
Max. cool	0.45 V
Max. warm	4.55 V

Diagnostic Circuit Diagram

note

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