Checking radiator fan valve N313: Audi A8 D2 3.3 TDI (AKF)

🧭 Before you start

Fits: Audi A8 D2 (4D)

• Renewed: valve

🔧 Engine codes this applies to

📋 Procedure

1. Unplug connector (arrow).
2. Connect multimeter (resistance measuring range) to valve.
3. Replace valve.
4. Connect up multimeter (voltage measuring range) between contact (1) and earth.
5. Switch on ignition.

6. Use current flow diagram to repair wiring.
7. Slacken off cross-head bolts (1) at electronics box in plenum chamber.
8. Unclip plenum chamber cover (2) at front at bulkhead (arrows).
9. Detach plenum chamber cover.
10. Prise out cover (1) in scuttle panel trim and slacken off rear cross-head bolt (rear right arrow).
11. Slacken off the remaining cross-head bolts (arrows).
12. Detach cover for electronics box in plenum chamber.
13. Screw out bolt (arrow).
14. Disengage retainer.
15. Detach diesel direct injection system control unit J248(Item 1). Release and unplug connectors.
16. With ignition switched off, connect test boxV.A.G 1598/30 to connectors of diesel direct injection system control unit J248 only (not to actual control unit).
17. Check for open circuit and short to earth or positive in the following wiring:
18. Repair wiring if necessary.

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