Lebaron Sedan L4-153 2.5L SOHC Turbo VIN J FI (1991)
Coolant Temperature Sensor / Switch HVAC: Description and Operation
Water Temperature Sensor
The water temperature sensor is located on the heater core mounting plate. This is a thermistor which will pick up on the engines coolant temperature.
The computer control uses this information to control the cold engine lockout time. The water temperature sensor is not serviceable and must be replaced
if found to be defective.