Checking idling speed: Audi A6 C5 (AJK, ARE, ARX, ARY, …)

🧭 Before you start

Fits: Audi A6 C5 (4B)

Don't miss

• Connect vehicle diagnostic, testing and information systemVAS 5051 A and select vehicle system "“01 - Engine electronics”" from list. Engine must be idling.
• If the fault memory has been erased on vehicles with engine code letters "“ARE”", "“AZA”" and "“BES”", you must generate the readiness code again .

🔧 Engine codes this applies to

📋 Procedure

1. Connect vehicle diagnostic, testing and information systemVAS 5051 A and select vehicle system "“01 - Engine electronics”" from list. Engine must be idling.
2. Interrogate fault memory .
3. Eliminate fault if necessary, erase fault memory, switch off and re-start engine, perform test drive and interrogate fault memory again as a check.
4. Leave engine idling.
5. ⚠ The electric radiator fan should not be running. — From list (1) select diagnostic function "“04 - Basic setting”".

6. Use keypad (2) to enter "“56”" for "“Display group number 056”" and confirm by touching the Q key.
7. Check display in zone (1). [Note: The speed in display zone (1) is the actual engine speed.The speed in display zone 2 is a theoretical speed calculated by the engine control unit.When the engine is idling the engine control unit tries constantly to adjust the actual engine speed so that it matches the specified value. This means that the actual engine speed when idling should always be approximately the same as the specified engine speed.Display zones (3) and (4) are provided for information purposes but have no relevance as regards checking of the idling speed.]
8. End function "“04 - Basic setting”" by pressing the ← key.
9. Interrogate fault memory again .
10. If the fault memory has been erased on vehicles with engine code letters "“ARE”", "“AZA”" and "“BES”", you must generate the readiness code again .
11. Perform the following checks:

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