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Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection > < Coolant Temperature Sensor/Switch (For Computer)|Specifications|Page 2169
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Coolant Temperature Sensor/Switch (For Computer): Description and Operation

    The engine temperature sensor, located on top of thermostat housing on Q45 models; top of the water inlet housing on M30 models; and behind the oil
filter on G20 models, detects engine coolant temperature and transmits a signal to the ECU. The temperature sensing unit employs a thermistor which is
sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to temperature rise.

Coolant Temperature Sensor/Switch (For Computer)|Testing and Inspection > < Coolant Temperature Sensor/Switch (For Computer)|Specifications|Page 2169