Sentra L4-1597cc 1.6L DOHC MFI (GA16DE) (1991)
Coolant Temperature Sensor/Switch (For Computer): Description and Operation
Engine Coolant Temperature Sensor
The engine temperature sensor, located on the R.H. side of the intake manifold, uses a thermistor which changes in resistance according to the
coolant temperature. As the temperature rises the resistance of the sensor lowers. The ECU interprets the resistance value as engine temperature.