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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 1499 (Heating & Air Conditioning (On Board Diagnostic)) >> 01 On Board Diagnostic (OBD) >> Read Measuring Value Block (function 08) >> Measuring value blocks from display group "011" through "020" >> Display group "012"

Display group "012"

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.

Current engine speed transmitted by Instrument Cluster Control Module J285, vehicle speed, status and value of compressor torque transmitted to Instrument Cluster Control Module J285 

Display field Meaning Remarks
1 Current engine speed in RPM transmitted by Instrument Cluster Control Module J285
  • Data are transmitted via CAN-Bus comfort system
2 Vehicle speed in km/h transmitted by Instrument Cluster Control Module J285
  • Display = "0"
  • No vehicle speed signal detected since switching on ignition
  • Display = "1"
  • Vehicle speed signal greater than 5 km/h received at least once from Instrument Cluster Control Module J285 since switching on ignition
  • Display = "1 to XX"
  • Current vehicle speed in km/h
  • Data are transmitted via the CAN-Bus comfort system
NOTE:
  • If the vehicle was driven at more than 5 km/h after switching on the ignition and before starting On Board Diagnostic (OBD), "1" is displayed with the vehicle stationary to indicate that least at one vehicle speed signal has been received.
Display field Meaning Remarks
3 Status of compressor torque transmitted to engine control unit (via Instrument Cluster Control Module J285) (display zone 4)
  • Display = "0"
  • The compressor torque transmitted is currently valid
  • Display = "1"
  • The compressor torque transmitted is no longer valid
  • Data are transmitted via the CAN-Bus comfort system to the Instrument Cluster Control Module J285, from where they are relayed via the drive CAN-Bus system to the engine control module.
NOTE:
  • "1" is displayed e.g. for a brief period after switching on ignition or if terminal "15" is not active (no signal received from Instrument Cluster Control Module J285).
Display field Meaning Remarks
4 Engine torque required for compressor operation in Nm calculated by operating and display module, Climatronic Control Module J255 and transmitted to engine control unit (via Instrument Cluster Control Module J285)
  • Calculated by operating and display module, Climatronic Control Module J255
  • Data are transferred via the CAN-Bus comfort system to the Instrument Cluster Control Module J285. The Instrument Cluster Control Module J285 transmits the data via the drive CAN-Bus system to the engine control module.
  • The calculated torque is determined by various factors of influence (refer to note).
 
  • Display = "0 to 1.0" Nm
  • Compressor off (A/C Compressor Regulator Valve N280 is not activated)
  • A torque of less than "1" is displayed if, for example, the operating and display module, Climatronic Control Module J255 is set to "ECON" mode.
 
  • Display = "1 to XX" Nm
  • Compressor on (A/C Compressor Regulator Valve N280 is activated)
  
NOTE:
  • The operating and display module, Climatronic Control Module J255 uses various measured values for calculating compressor torque (e.g. ambient temperature, pressure in refrigerant circuit, engine speed). Depending on these variables, the value calculated may be 1 to 25 Nm with the compressor switched on. A value of less than 1.0 Nm is displayed if the compressor is switched off.
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