General Information

Component Location





General Description

The in car temperature sensor joined to Humidity sensor as one body is located at heater control unit. It contains a thermistor which measures the temperature of the inside. The signal, decided by the resistance value which changes in accordance with perceived inside temperature, is delivered to heater control unit.
According to this signal, the control unit regulates in car temperature to intended value.

DTC Description

The ECM sets DTC B1234 if there is an open circuit in in car temp sensor signal harness or the measured voltage value of the sensor is more than the threshold value (4.9V)

DTC Detecting Condition





Schematic Diagram





Signal Waveform

** Resistance value of in car temp sensor as a function of temperature.