Engine coolant temperature sensor

1. Loosen the fastening screws and remove the rpm and phase sensor guard.

The sensor applies semiconductor technology. Consequently, the resistive value decreases as the sensor temperature increases with the coolant temperature. The resistance variation is not linear: consequently, it is higher at low temperatures with respect to higher temperatures.

1. Loosen the fastening screw and remove the rpm and phase sensor.

• If required, loosen the fastening screws and remove the rpm and phase sensor from its bracket.

ENGINE COOLANT TEMPERATURE SENSOR

This sensor is fitted on the thermostat cap and measures the coolant temperature by means of a double NTC thermistor with negative resistance coefficient. One NTC thermistor sends a signal to the injection ECU while the other sends a signal to the instrument panel temperature gauge and warning light.

REMOVAL/REFITTING

• Make sure the ignition key is at "STOP" and remove the (-) battery terminal.
• Loosen the screws and remove the left engine compartment guard.

1. Loosen the clips and remove the corrugated sleeve with resonators after releasing the intermediate resonator from the fastening pin.