General Information

Component Location





General Description

Water temp sensor located at heater unit detects coolant temperature. Its signal is used for cold engine lookout control. When the driver operates heater to warm before the engine is warmed up, the signal from sensor is delivered to the heater control unit and according to this signal, heater control unit reduces blow motor speed until coolant temperature is up to threshold value

DTC Description

The ECM sets DTC B1203 if there is a short circuit in water temp sensor signal harness or the measured resistance value of sensor is less than threshold value (about 1.2 kOhms)

DTC Detecting Condition





Specification





Schematic Diagram