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Display group "014” > < Display group "012”

A4 Mk2

Display group “013”
Display group “013”
Actuation of fresh air blower -V2- and calculated fresh air blower speed, voltage transmitted by control unit in dash panel insert -J285- at terminals “58d” and “58s” (in % )
   
Display zoneSignificanceExplanatory notes
1Actuation of fresh air blower -V2- via fresh air blower control unit -J126- as a % of maximum possible actuation
t  Display = “0.....5 %”
–  Fresh air blower -V2- switched off
t  Display = “12....88%”
–  Fresh air blower -V2- in control mode
l  Calculated by operating and display unit, Climatronic control unit -J255-
2Speed in rpm calculated by operating and display unit, Climatronic control unit -J255- via speed signal transmitted by fresh air blower control unit -J126- at fresh air blower -V2-
l  Any deviation from the specified speed is determined by the fresh air blower control unit -J126- and signalled to the operating and display unit, Climatronic control unit -J255- → Chapter (display group “018”)

t  To improve voice recognition and the clarity of telephone voice input, the fresh air blower speed is reduced on vehicles as of Model Year 2002 (with operating and display unit, Climatronic control unit -J255- as of hardware/software version “0711”). The following applies:
–  The reduction takes effect as soon as the message “Telephone voice input” is transmitted via the convenience data bus system.
–  The reduction time is limited to max. 2 minutes.
–  The amount by which the fresh air blower speed is reduced depends on the air outflow direction and the fresh air blower speed when the “Telephone voice input” signal is received. The greater the proportion of air routed to the dash panel vents, the more the speed is reduced.
–  In the basic setting, the fresh air blower speed with 100% air to the dash panel vents is limited to 15 % of the maximum fresh air blower speed. This restriction can be reduced or cancelled by way of the “Adaption” function in adaption channel “8”. → Chapter
  Note
t  The fresh air blower control unit -J126- is integrated into the fresh air blower -V2- and cannot be replaced separately at present.
t  Actuation of the fresh air blower -V2- is calculated by the operating and display unit, Climatronic control unit -J255- on the basis of the measured temperatures and the settings made.
t  The fresh air blower speed is transmitted by the fresh air blower control unit -J126- to the operating and display unit, Climatronic control unit -J255-.
   
Display zoneSignificanceExplanatory notes
3Voltage transmitted by control unit in dash panel insert -J285- at terminal “58d”
t  Display = “0....100%”
–  Display as a % of maximum possible voltage
–  Depending on setting of switches and instruments illumination regulator -E20-
l  Data are transmitted by way of the convenience data bus system
–  The voltage at terminal “58d” controls the illumination of the operating and display unit, Climatronic control unit -J255- displays.
4Voltage transmitted by control unit in dash panel insert -J285- at terminal “58s”
t  Display = “0 %”
–  With side lights off
t  Display = “1....100%”
–  Side lights on
–  Display as a % of maximum possible voltage
–  Depending on setting of switches and instruments illumination regulator -E20-
l  Data are transmitted by way of the convenience data bus system
–  The voltage at terminal “58s” controls the illumination of the operating and display unit, Climatronic control unit -J255- buttons (switches)
–  If display is “0%”, buttons (switches) are not illuminated

  Note
t  With the ignition switched on, the voltage at terminal “58d” for display illumination is always output by the control unit in dash panel insert -J285-. In daylight, 100% may always be displayed depending on the brightness to which the dash panel insert photosensor is exposed.
t  At present, the voltage at terminal “58s” for illuminating the buttons (switches) is only output by the control unit in dash panel insert -J285- with the side lights switched on (regardless of whether ignition is on or off). In daylight, 100% may always be displayed depending on the brightness to which the dash panel insert photosensor is exposed → "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051 and → Electrical system; Rep. Gr.01
   

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