General Information

Component Location





General Description

Coolant temperature is detected by a water temperature sensor located at the heater unit. The A/C ECU uses coolant temperature to control the cold engine lockout function. The cold engine lockout function reduces blower speed until coolant temperature reaches the threshold value.

DTC Description

Air conditioner Control Module sets DTC B1203 if Water sensor has been detected below 0.1V for 4 seconds.

DTC Detecting Condition





Specification

** Resistance value of Water temperature sensor as a function of temperature.






Diagnostic Circuit Diagram