Fig. 7.4. Location of the pressure sensor in the intake manifold
2. Measure the resistance between contacts 1 and 3 of the sensor connector (see Fig. 7.4).
Resistance, kOhm:
- at a temperature of 20°C: 2.3-3.0
- at a temperature of 80°C: 0.30-0.42
3. Remove the intake manifold pressure sensor.
4. By heating the sensor with a stream of hot air from a hair dryer, check the change in resistance of the temperature sensor of the air entering the engine, which should decrease as the temperature increases (Fig. 7.5).
Fig. 7.5. Using a hair dryer to heat the engine air temperature sensor
5. If the resistance of the sensor does not decrease when it is heated, replace the sensor.
6. Install the intake manifold pressure sensor and secure it with bolts, tightening them to the required torque.
Tightening torque: 13-15 Nm