The Temperature Control Actuator(Air mix potentiometer) 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 | Possible Cause |
DTC Strategy |
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Voltage check | 1. Open in signal(Feedback signal), power and ground circuit. 2. Faulty Driver temperature control actuator. 3. Faulty Air condition Contorl Module. |
Enable Conditions |
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Ignition ON | |
Threshold value |
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Driver Air mix actuator(Temperature actuator) Sensor signal is at or below 0.1V for 0.3 seconds | |
Failsafe |
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Setting temperature : 16℃(62.6℉)-24℃(76.1℉), fix at max. cooling position
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Setting temperature : 25℃(77℉)-31℃(89.6℉), fix at max. heating position |
※ Voltage value of temperature control actuator(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 |
