Audi Workshop Service and Repair Manuals

• ‒ Connect fault reader V.A.G 1551,
  Enter address word 08 "Electronic climate/heating control" and advance the program until "Select function XX" appears on display (=>as of Page 01-11).
• ‒ Switch on printer by pressing PRINT key (lamp in key lights up).

• ‒ Press keys 0 and 2. (02 selects the "Interrogating fault memory" function.)

• ‒ Press Q to confirm entry.

• ‒ Press ⇒key.

The stored faults are displayed and printed out one after the other.

• ‒ After the last fault has been displayed and printed out, rectify the faults in line with the fault table
  ().

As with "No faults detected" the program returns to its initial position when the ⇒key is pressed.

• ‒ End output (function 06)
• ‒ Switch off ignition and detach diagnostic connector.

Notes:

• ◆ If a fault was detected:
• ‒ 1. Rectify fault.
• ‒ 2. Interrogate fault memory (function 02).
• ‒ 3. Erase fault memory (function 05).
• ‒ 4. Check code (function 01) or encode control unit (function 07).

• ‒ 5. Perform basic setting (function 04).
• ‒ 6. Interrogate fault memory (function 02) and erase if applicable (function 05).
• ‒ 7. End output (function 06).

• ◆ If no faults have been detected and complaints have been received about the air conditioner (e.g. the compressor is not functioning or only functioning intermittently, system control unsatisfactory, fresh air blower speed cannot be regulated):
• ‒ 1. Read measured value block (Function 08) .
• ‒ 2. Perform final control diagnosis (function 03) .
• ‒ 3. Check refrigeration capacity of air conditioner.

• ◆ If, when the ignition is switched on, no "Signal for ignition off time" has been detected by operating and display unit -E87, the -E87 assumes a standing time of more than 4 hours and it is assumed that the engine temperature is the same as the ambient temperature. It can happen when operating the heater that there is a delay before the fresh air blower starts, even though the engine has reached operating temperature ( Reading measured value block). The ambient temperature indicator -G106 in the dash panel insert may display incorrect ambient temperature values.
• ◆ If the two display zones in the operating and control unit -E87 are not illuminated when the ignition is switched on, rectify voltage supply from terminals 58, 58d and 58s (dimming) to -E87 according to the current flow diagram (Electrical check).