Audi Workshop Service and Repair Manuals

• ‒ With ignition off, connect up vehicle diagnostic, testing and information system VAS 5051 with diagnostic cable VAS 5051/1 to 16-pin diagnostic socket in vehicle and select electronic air conditioner/heater with "address word" 08 .

Requirements:

• ● Encoding checked and if necessary corrected => Page 01-107

• ● Fault memory interrogated => Page 01-104
• ● Heating system switched on

→ Indicated on display of V.A.S 5051:

• ‒ Select function "04 - Basic setting".

→ Indicated on display of V.A.S 5051:

• ◆ Prompt for entering display group appears in display zone -1-.
• ◆ Input keypad appears in display zone -2-.

• ‒ Use input keypad in display zone -2- to enter "01" or "001" for "Display group number 001" and confirm entry by touching "Q-key".

→ Indicated on display of V.A.S 5051:

The following control motors are now actuated and their current feedback value displayed in zone 1. At present, the control motors are assigned as follows:

• ◆ Position 1:
  Temperature flap control motor, left -V158
• ◆ Position 2:
  Temperature flap control motor, right -V159

→ Indicated on display of V.A.S 5051:

• ◆ Position 3:
  Defrost flap control motor -V107
• ◆ Position 4:
  Central flap control motor -V70
• ◆ Position 5:
  Air-flow flap control motor -V71 (only fitted on LHD vehicles; "255" is displayed for RHD vehicles with no control motor, as no control motor is connected)
• ◆ Position 6:
  Air recirculation flap control motor -V113

End positions of control motors (resistance values on stop) are stored in operating and display unit for air conditioner/Climatronic -E87 (heating) (resistance value of potentiometers in control motors) and used for further control action.

Once control motors have reached both end stops, they are moved again from one stop to the other. During this process, adjustment time is measured and stored in -E87 (heating) for use in the event of emergency operation.

→ Indicated on display of V.A.S 5051:

Movement of control motors can be followed on display in display zone -1- (feedback values in display zones 1 - 6 change).

Wait until "0" is indicated for feedback values displayed in zone -1-.

Notes:

• ◆ Basic setting is over when "0" appears in display zones.
• ◆ RHD vehicles have no control motor -V71. "255" is therefore displayed (open circuit) at position 5 for such vehicles during basic setting. As soon as basic setting for other control motors has been completed, this display also switches to "0".
• ◆ Return to selection program by touching ←key.
• ◆ If fault in control motor potentiometer is detected during basic setting, substitute value is stored as adaption value (learned value for this potentiometer) and displayed in the appropriate measured value block. The fault "Adaption limit exceeded" is stored in the fault memory for this control motor.

• ◆ → Different display group can be selected by touching keys -2-.
• ◆ Different function can be selected by touching keys -3- (e.g. to switch from "Basic setting" to "Reading measured value block" and back again).

• ‒ Interrogate fault memory => Page 01-18.
• ‒ Following display and print-out of last fault, eliminate faults as per fault table => Page 01-22.

Note:

If a fault has been detected and eliminated, basic setting is to be repeated.