Testing wheel impulses: Audi A6 C5

🧭 Before you start

Fits: Audi A6 C5 (4B)

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• Difference between speed of left (L) and right (R) wheel in lower speed range must not exceed 5 km/h.If difference exceeds 5 km/h, check output signals of ABS control unit J104: Running gear45.Wheel impulse test must be repeated .

📋 Procedure

1. Select the menu option "“WHEEL SENSOR”" using the cursor buttons.
2. Confirm the selection using the ENTER button.
3. Press the ENTER button to continue.
4. Confirm "“OK”" using the ENTER button.
5. Switch on the engine and drive forwards as straight as possible. At the same time, compare the display for both wheel sensors (left and right). [Note: Difference between speed of left (L) and right (R) wheel in lower speed range must not exceed 5 km/h.If difference exceeds 5 km/h, check output signals of ABS control unit J104: Running gear45.Wheel impulse test must be repeated .]

6. Stop the vehicle.
7. If values are within permitted range, press ENTER button to confirm "“YES”" display.
8. Place gearbox in reverse gear.
9. Drive approx. 3 m in reverse gear and stop the vehicle.
10. Confirm "“OK”" using the ENTER button.
11. Confirm "“OK”" using the ENTER button.
12. Check the signal from reversing light switch F4 using current flow diagram and repeat wheel impulse test .

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