Note: The refrigerant circuit remains sealed, valve connection. If refrigerant comes out for more than 1 second when the sensor is unscrewed, the non-return valve is defective. Tighten the sensor again and replace the pipeline with the non-return valve.
Switch off the ignition and all electrical consumers. Disconnect connector -2-. Unscrew high pressure sensor -1-. Tightening torque: 8 Nm. Replace O-ring, moisten it with oil and install carefully.
Checking work
The function of the high pressure sender -G65- is checked in the self-diagnosis of the air conditioner control unit -J301-.