Checking torque converter lock-up clutch — AUDI

🧭 Before you start

Fits: Audi A4 Cabriolet B6/B7 (8H), Audi A4 B5 (8D), Audi A4 B6/B7 (8E), Audi A6 C5 (4B), Audi A8 D2 (4D)

📋 Procedure

1. ⚠ Test equipment must always be secured on the rear seat and operated from that position by a second person.If test and measuring instruments are operated from the front passenger's seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may suffer serious injuries when the airbag is triggered. — Connect the vehicle diagnostic, testing and information systemVAS 5051 to the diagnostic connector with the ignition switched off.
2. Start engine.
3. Touch Vehicle self-diagnosis button.
4. From list (1) select vehicle system "“02 - Gearbox electronics”".
5. Wait until next screen display appears.

6. From list (1), select function "“08 - Read measured value block”".
7. Use keypad (2) to enter 7 for "“Display group 007”" and confirm by touching Q key.
8. Road-test vehicle.
9. Check display in zones (3) and (4). Specifications:
10. Torque converter lock-up clutch defective or worn
11. Incorrect torque converter version installed
12. Mechanical fault in automatic gearbox pressure control valve 4N218
13. Problems with ATF supply to automatic gearbox pressure control valve 4N218
14. Torque converter pressure valve defective
15. Valve for torque converter lock-up clutch defective.
16. Exit from function "“08 - Read measured value block”" by touching ← key.
17. Select function "“06 - End output”".
18. Switch off ignition and unplug diagnostic connector.

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