Contents: Examination ⤓ Replacement ⤓
Caution: Do not disconnect the sensor until the engine has cooled down.
Examination
1. If the coolant temperature sensor does not work, you should first check the fuses.
2. If the temperature gauge shows an excessively high or low temperature, the engine should be warmed up.
6.3a The coolant temperature sensor (indicated by the arrow) is usually located near the thermostat, which is located near the intake manifold.
6.3b On some models, the coolant temperature sensor (indicated by the arrow) is located at the bottom of the intake manifold, behind the distributor.
3. If the temperature sensor shows a high temperature when the engine is not yet warmed up, disconnect the wires from the sensor (6.3a, 6.3b). If there are temperature fluctuations, then the sensor should be replaced. If the sensor shows a high temperature, then the wires are shorted.
4. If after warming up the engine the temperature sensor still does not work and the fuses have been checked, stop the engine. Disconnect the wire from the sensor and ground it to the engine body. Turn on the ignition without starting the engine. If the sensor shows a high temperature, it should be replaced.
5. If the temperature sensor still does not work, it is faulty or the circuit may be open.
Replacement
6. When the engine has cooled completely, disconnect the radiator shroud, squeeze the upper radiator hose and replace the cap.
7. Disconnect the sensor from electricity.
8. Prepare a new temperature sensor.
9. Install the new sensor.
10. Carefully insert the sensor and connect the wiring harness.
11. Add coolant and start the engine. Check the system for leaks.