Refrigerant pressure sensor — removal and installation

The pressure sensor is installed on the pipeline between the compressor and the air conditioner condenser. According to the sensor signals, the engine ECU turns off the air conditioning compressor when the system is depressurized (those. when system pressure drops to 2.0 bar) or an emergency increase in pressure in it (up to 27.0 bar) to protect the compressor from overload.



A shut-off valve is installed in the pipeline fitting, under the pressure sensor, which closes when the sensor is unscrewed. Therefore, when replacing the pressure sensor, refrigerant leakage from the air conditioning system will not occur.

Sensor part number see here.

Removing

Raise the car on the lift to a height sufficient for comfortable work.

NOTE. When removing the pressure sensor, it is not necessary to unload the refrigerant, because. the refrigeration circuit is isolated from the environment by a shut-off valve.

Remove front bumper (see here).

Disconnect the fastening elements of the air baffle 1, Figure 5-1, (screwdriver, nozzle Torx T30). Remove air deflector.




Disconnect connector 1, Figure 5-10, refrigerant pressure sensor 2 from vehicle wiring harness (flat screwdriver).



Unscrew and remove the refrigerant pressure sensor (wrenches 13 and 17).

Installation

Install the refrigerant pressure sensor in the reverse order of removal.

Wherein:

• before installing the pressure sensor on the sealing ring, apply compressor oil Sanden SP-10;
• tightening torque of the refrigerant pressure sensor on the pipeline connecting the condenser to the condenser - 9 Nm (0.9 kgf·m) (interchangeable inserts 17, torque wrench).

Check the air conditioning system for refrigerant leaks (leak detector).

Check the operation of the air conditioning system.