Engine coolant temperature sensor 1.4 l, 55 and 74 kW
1 - connecting block; 2 - coolant temperature sensor
Engine Coolant Temperature Sensor 1.0L 37kW and 1.4L 50kW
1 - connecting block; 2 - coolant temperature sensor
Engine coolant temperature sensor 1.9 l, 74 kW
1 - connecting block; 2 - coolant temperature sensor
Graph of coolant temperature sensor resistance versus sensor temperature
1. Disconnect the wire from the battery terminal.
2. Drain the coolant (see subsection 5.13).
3. Remove the upper engine cover (see subsection 2.1).
4. Disconnect block 1 (see fig. Engine coolant temperature sensor 1.4 l, 55 and 74 kW, fig. Engine coolant temperature sensor 1.0 l, 37 kW and 1.4 l, 50 kW and fig. Engine coolant temperature sensor 1.9 l, 74 kW) with wires from coolant temperature sensor 2.
5. Remove the sensor and, by connecting an ohmmeter to its contacts, measure the resistance of the sensor.
6. Warm up the sensor by immersing it in hot water (temperature around 80°C), and measure its resistance again. Compare your results with the graph (see fig. Graph of coolant temperature sensor resistance versus sensor temperature). For example, at a temperature of 30°C, the resistance of the sensor should be 1.5-2.0 kOhm, and at 80°C - 275-375 Ohm. If the measured resistance is not as specified, replace the sensor.