A6 Quattro Sedan V8-4.2L (BVJ) (2007)
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Discharge Air Temperature Sensor / Switch: Service and Repair
A/C Pressure/Temperature Sensor
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) control
head does not switch the compressor on.
‹› Refrigerant circuit remains closed (connection with valve).
‹› The A/C pressure/temperature sensor (G395) measured values can be read out via the "read measured values block" function => Vehicle
Diagnosis, Testing and Information System VAS 5051.
‹› The A/C pressure/temperature sensor (G395) exchanges information with the Climatronic Control Module (J255) via the "Lin Bus" A/C data bus
system => Vehicle Diagnosis, Testing and Information System VAS 5051.
‹› The temperature measured by the A/C pressure/temperature sensor (G395) differs from the actual refrigerant temperature because of the A/C
pressure/temperature sensor (G395) 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 (G395) may be installed in the Audi A6 ("gray" housing color).
‹› A high pressure sensor (G65) may not be installed in the Audi A6 ("black" housing color) (only delivers square-wave signals).
Remove the front bumper.
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Remove the air duct - C - (and the mount for the bumper, depending on the vehicle design - A -) => Body Exterior 63 Removal and Installation.
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Disconnect the connector - A - from the A/C pressure/temperature sensor (G395) - B -.
