Examination
Disconnect plug.
Connect an ohmmeter to both pins of the connector.
Measure the resistance and compare with the specified value. Intermediate values are possible at different temperatures. See the table below for set values.
If the result differs from the specified value, remove the sensor.
Place the sensor on the wire hook in the water bath so that it does not touch the walls of the vessel. Cool the water with pieces of ice, and then heat it up on the stove. At given temperatures, remove the sensor and measure the resistance between its contacts.
If the temperature sensor is normal, connect a voltmeter to the connector pins and ground.
Turn on the ignition. Set value: about 5 volts. If there is no voltage, ring the wire.
Ring the mass wire.
If the sensor and wires are normal, the control unit is defective.
Withdrawal
Attention: To prevent coolant from flowing out when removing the sensor, drain some of the coolant into a vessel.
Remove the temperature sensor connector.
Unscrew temperature sensor 2 OME.
1 - coolant temperature sensor for the gauge on the dashboard.
Installation
Screw in the temperature sensor with a new gasket and tighten with a torque of 12-14 Nm (diesel engine: 18+1 nm).
Attention: Do not overtighten the temperature sensor.
Connect connector:
Connector - Sensor
- Blue - DME temperatures;
- Black - coolant temperature for the gauge on the dashboard.
Fill with coolant.
Remove air from the cooling system.
Carry out a test drive and check the tightness of the temperature sensor installation site, if necessary, tighten it a little.