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 .
DTC B1245 sets if the Driver Air mix actuator(Temperature actuator) Sensor signal is at or below 0.1V for 0.3 seconds.
Item
Detecting Condition
DTC Strategy
Voltage check
Poor Conection in harness
Open in signal(Feedback signal), power and ground circuit
Faulty Driver Temperature Actuator
Faulty Air condition Contorl Module
Enable Conditions
Ignition ON
Threshold value
Driver Air mix actuator(Temperature actuator) Sensor signal is at or below 0.1V for 0.3 seconds.
Failsafe
Setting temperature : 16?(62.6?)-24?(76.1?), fix at max. cooling position
Setting temperature : 25?(77?)-31?(89.6?), fix at max. heating 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