DTC B14A8: Glass Temperature Sensor Circuit [10/2014 - ]: Description

The air conditioning amplifier assembly detects the windshield glass surface temperature from this circuit. The air conditioning amplifier assembly applies voltage to the air conditioning thermistor assembly (glass temperature sensor). As the windshield glass surface temperature rises, the resistance decreases. The air conditioning amplifier assembly detects the resistance change as the windshield glass surface temperature changes.

The glass temperature sensor is integrated with the air conditioning thermistor assembly.