Discharge Air Temperature Sensor / Switch: Service and Repair

A/C Pressure/Temperature Sensor

• The A/C output cannot be checked when the A/C Pressure/Temperature Sensor (G395) is removed. The Climatronic Control Module (J255) does not switch the A/C compressor on.

• The refrigerant circuit remains closed, connection with valve.

• For checking the A/C pressure/temperature sensor measured values, refer to Vehicle diagnosis, testing and information system VAS 5051/ under"Guided Fault Finding".

• The A/C pressure/temperature sensor exchanges information with the Climatronic control module via the LIN Bus A/C databus system.

• The temperature measured by the A/C pressure/temperature sensor differs from the actual refrigerant temperature because of the A/C pressure/temperature sensor design and its component location. Because of this, it is not currently evaluated and is not used to regulate the A/C system.

• Only the A/C pressure/temperature sensor may be installed in the Audi R8 (gray housing color).

• A High Pressure Sensor (G65) may not be installed in the Audi R8 (black housing color) (only delivers square-wave signals).

Removing





- Remove the bumper cover.

- Remove bolts - arrows -.

- Remove the air duct - 1 -.

- Disconnect electrical connector - A -.





- Remove the A/C pressure/temperature sensor - B - from the refrigerant line.

Installing

• Tightening specification: 5 Nm.

Installation is done is reverse order, observe the following:

- Replace the O-ring - C -, refer to => [ Refrigerant Circuit O-Rings ] Refrigerant Circuit O-Rings.

- Tighten the A/C pressure/temperature sensor.