Checking vehicle speed signal: Audi A6 C5 (AKF, BAM, BFV)

🧭 Before you start

Fits: Audi A6 C5 (4B)

• Renewed: dash panel insert

🔧 Engine codes this applies to

📋 Procedure

1. ⚠ Risk of injury due to distraction and inadequate securing of testers and measuring instrumentsDanger from triggering of front passenger's airbag in an accidentThe use of testers and measuring instruments whilst driving causes a distraction.Non-secured testers and measuring instruments increase the risk of injury.Always attach testers and measuring instruments to the rear seat with a strap and have them operated from there by a second person. — Touch the Vehicle self-diagnosis key (Item 1) in the list.
2. From the list (1) select the vehicle system "“17 - Dash panel insert”" and activate this by touching the → key.
3. From the list (1) select the function "“011 - Measured values”" and activate this by touching the → key.
4. On the keypad (1), touch the key 1 for "“Display group 001”" and confirm the entry by touching the Q key.
5. Perform test drive.

6. Check the display in zone (1).
7. Replace dash panel insert .
8. Check CAN bus wiring Electrical system, self-diagnosis01.
9. Remove dash panel insert .
10. Connect the test boxV.A.G 1598A with the adapterV.A.G 1598/25 to the 32-pin blue connector.
11. Raise vehicle with a lifting platform until front left wheel is free to turn.
12. Connect up multimeter for continuity test between sockets 9 and 28:
13. Turn front left wheel.
14. Use current flow diagram to check wiring between dash panel insert and speedometer sender G22.
15. Replace speedometer sender G22.

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