audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Display group "004” > < Explanatory notes on compressor shutoff criterion for display zones "1....4” of display group "002”

A4 Mk2

Display group “003”
Display group “003”
Left temperature flap control motor -V158-
   
Display zoneSignificanceExplanatory notes
1Actual feedback value of left temperature flap control motor potentiometer -G220- (in left temperature flap control motor -V158-)
l  Display value greater than “9” and less than “251”
l  Maximum permissible deviation “3” units from specified feedback value (only in range greater than “70” but less than “190”)
2Specified feedback value for left temperature flap control motor potentiometer -G220- (calculated by operating and display unit, Climatronic control unit -J255-)
l  Display range “10 ... 245”
3Value determined during “Basic setting” and stored in the operating and display unit, Climatronic control unit -J255- for the left temperature flap control motor potentiometer -G220- with control motor set to “Cooling stop” (temperature flap routes air flow past heat exchanger)
l  Display value greater than “9” and less than “71”
4Value determined during “Basic setting” and stored in the operating and display unit, Climatronic control unit -J255- for the left temperature flap control motor potentiometer -G220- with control motor set to “Heating stop” (temperature flap routes air flow through heat exchanger)
l  Display value greater than “189” and less than “246”

  Note
t  If the feedback value in display zone “1” is less than “5 ” (short circuit) or greater than “250” (open circuit), perform Electrical checks → Chapter.
t  The actual feedback value (currently between “10” and “70” as well as between “190 ” and 245) is specified as permissible tolerance range for the control motor or flap stop in the operating and display unit, Climatronic control unit -J255-.
t  If a value greater than or less than the permissible adaption value (learned value) is determined during basic setting, the fault “Adaption limit exceeded” is entered in the fault memory and a substitute value is displayed in the measured value block (display zones “3” and “4”) for this control motor (currently “30” for lower stop and “220” for upper stop).
t  If the values displayed in zone “3” or “4” are outside the permissible range, refer to → Chapter.
t  If a fault at the integrated potentiometer is established for one or more control motors, the temperature flap control motors are actuated on the basis of the values measured by the outflow temperature sensors. In the event of a fault, all other control motors are actuated by the operating and display unit, Climatronic control unit -J255- by way of an emergency operation program stored in this (time control).
   

Display group "004” > < Explanatory notes on compressor shutoff criterion for display zones "1....4” of display group "002”