Checking voltage supply of secondary air pump motor V101 — AUDI

🧭 Before you start

Fits: Audi A8 D3 (4E, 2002–2010)

🔧 Engine codes this applies to

📋 Procedure

1. Activate jacking mode Running gear, front-wheel drive and four-wheel drive 43. Operating the air suspension.
2. Vehicles with auxiliary heater: remove bolts (arrows) securing exhaust pipe for auxiliary/additional heater to noise insulation.
3. Release fasteners (1) and remove front noise insulation.
4. Unplug electrical connector (arrow) at secondary air pump motor V101.
5. Connect voltage tester V.A.G 1527 B between contacts (1) and (2).

6. Under selection menu (1) select the diagnostic function "“03 - Final control diagnosis”".
7. Press the button → until the secondary air pump relay J299 is actuated.
8. Exit function "“03 - Final control diagnosis”" by pressing the ← key.
9. Switch off ignition.
10. Carry out the following checks:
11. If necessary repair wiring connection.
12. Renew secondary air pump motor V101.
13. Deactivate jacking mode Running gear, front-wheel drive and four-wheel drive 43. Operating the air suspension.

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