Display group "010"

WARNING: This page is about a different car, the 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Measuring values of the following sensors (Evaporator Vent Temperature Sensor G263, Fresh Air Intake Duct Temperature Sensor G89) and temperature values transmitted by the Instrument Cluster Control Module J285 (ambient temperature calculated and ambient temperature measured by Outside Air Temperature Sensor G17)

Display field	Meaning	Remarks
1	Measuring value of Evaporator Vent Temperature Sensor G263 in °C	Checking → Automatic Climate Control System, electrical testing

Depending on the setting at the operating and display module, Climatronic Control Module J255, the temperature at the evaporator is regulated to the following values:

In normal control mode between 2 °C and 10 °C
At temperatures less than 13 °C at least 3 °C below the ambient temperature determined but not less than 2 °C
At temperatures less than 16 °C and with rainfall (windshield wipers switched on) at least 6 °C below the ambient temperature determined but not less than 2 °C.
2 °C with "Lo" temperature setting at operating and display module, Climatronic Control Module J255

NOTE:

If a temperature below 2 °C is measured for a lengthy period by the Evaporator Vent Temperature Sensor G263, the operating and display module, Climatronic Control Module J255 switches off the compressor.
The value measured by the Evaporator Vent Temperature Sensor G263 is used to control the evaporator temperature. The evaporator temperature is altered by actuating the A/C Compressor Regulator Valve N280 (display group "001").
- At least 5 °C, however not less than 2 °C with "recirculated-air mode" set at operating and display module, Climatronic Control Module J255.
At higher ambient temperatures, the specified temperatures are not always attained at the Evaporator Vent Temperature Sensor G263 (despite the compressor operating at maximum output).
Activation for the A/C Compressor Regulator Valve N280 to control the compressor output is displayed in zones "1" and "2" of display group "001".
If the Evaporator Vent Temperature Sensor G263 has not been properly installed or if it supplies an excessively high temperature value, the evaporator may ice up (the operating and display module, Climatronic Control Module J255 assumes from the measured value that the required evaporator temperature has not been attained).

Display field	Meaning	Remarks
2	Measuring value of Fresh Air Intake Duct Temperature Sensor G89 in °C	Checking → Automatic Climate Control System, electrical testing
3	Calculated ambient temperature in °C transmitted by Instrument Cluster Control Module J285	Data are exchanged via the CAN-Bus comfort system. The Instrument Cluster Control Module J285 calculates the current ambient temperature on the basis of the incoming temperature measured values (Outside Air Temperature Sensor G17, Fresh Air Intake Duct Temperature Sensor G89), the vehicle speed and standing time etc.
4	Measured value transmitted by Instrument Cluster Control Module J285 of Outside Air Temperature Sensor G17 in °C	Data are exchanged via the CAN-Bus comfort system. The Outside Air Temperature Sensor G17 is connected to the Instrument Cluster Control Module J285

NOTE:

Checking measured value of Outside Air Temperature Sensor G17 "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
When the vehicle is stationary, for example, the measured values of the Outside Air Temperature Sensor G17 and the Fresh Air Intake Duct Temperature Sensor G89 are impaired by the heat given off by the radiator or exhaust system etc. For this reason a program is stored in the Instrument Cluster Control Module J285 which suppresses a higher measured temperature in the event of a traffic jam following a lengthy period of operation or in urban traffic for instance. The cooler arithmetic value is then displayed instead of the measured value in the ambient temperature indicator.
The display in zone "3 " is based on the lower of the two measured ambient temperatures (display zone "2" and display zone "4"). After switching off the ignition, the value remains stored for up to 4 hours and the current measured values are not displayed.