Display group "011"
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 value of Instrument Panel Interior Temperature Sensor G56, measured speed of Interior Temperature Sensor Fan V42, coolant temperature transmitted by Instrument Cluster Control Module J285 and activation of output for idling speed increase
| Display field | Meaning | Remarks | |
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| 1 | Measuring value of Instrument Panel Interior Temperature Sensor G56 in °C |
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| 2 | Speed of Interior Temperature Sensor Fan V42 in RPM
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NOTE:
- The Instrument Panel Interior Temperature Sensor G56 is vented by the Interior Temperature Sensor Fan V42. If the intake frame in the trim of the operating and display module, Climatronic Control Module J255 is closed off or if the Interior Temperature Sensor Fan V42 is not running, the temperature sensor cannot properly record the actual passenger compartment temperature and air conditioner regulation will not be correctly implemented.
- The Instrument Panel Interior Temperature Sensor G56 and the Interior Temperature Sensor Fan V42 are permanently installed in the operating and display module, Climatronic Control Module J255 and cannot be replaced separately.
- The Interior Temperature Sensor Fan V42 is always in operation when the ignition is on.
- If the Interior Temperature Sensor Fan V42 is stiff and the blower speed drops below 1500 RPM, this situation is stored as a fault in the DTC memory of the operating and display module, Climatronic Control Module J255. At ambient temperature, the Interior Temperature Sensor Fan V42 runs at a speed of approx. 3000 RPM.
| Display field | Meaning | Remarks | |
|---|---|---|---|
| 3 | Coolant temperature in °C transmitted by Instrument Cluster Control Module J285 |
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NOTE:
- To prevent abrupt shutoff of the compressor because of excessive coolant temperature, its output is reduced by the operating and display module, Climatronic Control Module J255 as soon as the coolant temperature transmitted by the Instrument Cluster Control Module J285 exceeds 115 °C (at 118 °C the compressor is shut down completely).
- If the coolant temperature is less than 40 °C, the Instrument Cluster Control Module J285 may not transmit a coolant temperature via the CAN-Bus comfort system. In this case, start the engine and wait until the coolant temperature is in excess of 40 °C. If "Not OK" is displayed with a warm engine, perform On Board Diagnostic (OBD) for the Instrument Cluster Control Module J285 Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052
| Display field | Meaning | Remarks | |
|---|---|---|---|
| 4 | Activation for output for idling speed increase
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NOTE:
- The way in which this signal is processed in the engine control module varies for the individual engines.
- Checking "Idling speed control" (idling speed increase) function "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052.
- Idling speed control is only activated if there are no compressor shutoff criteria preventing activation of the A/C Compressor Regulator Valve N280 (e.g. engine not running or "ECON" mode selected). The operating and display module, Climatronic Control Module J255 activates the request e.g. in "Lo" or "Hi" temperature setting.
- This function informs the engine control module that the air conditioner requires a higher engine speed to attain the specified setting (higher compressor speed or more heat output from engine).
- The request for idling speed increase is activated by the operating and display module, Climatronic Control Module J255 to provide better heating or cooling output, e.g. in "Hi" or "Lo" temperature setting ("Lo" only with compressor switched on).