TDI injection and glow plug system (8-cyl. Common Rail) — Final control diagnosis — AUDI

🧭 Before you start

Fits: Audi A8 D2 (4D)

Don't miss

• Connect fault reader and select control unit for engine electronics 1. When doing this, the ignition must be switched on.
• Final control diagnosis can only be repeated after starting the engine and then switching the ignition off and on again.

🔧 Engine codes this applies to

📋 Procedure

1. Connect fault reader and select control unit for engine electronics 1. When doing this, the ignition must be switched on.
2. Press function "“Final control diagnosis”".
3. Check glow plug relays [Note: The radiator fan may also be actuated by the thermoswitch, automatic gearbox or air conditioner as a function of temperature. When performing final control diagnosis, make sure actuation does not take place for any of these reasons.Allow engine to cool down if necessary.]
4. Check radiator fan actuation 19. [Note: The radiator fan may also be actuated by the thermoswitch, automatic gearbox or air conditioner as a function of temperature. When performing final control diagnosis, make sure actuation does not take place for any of these reasons.Allow engine to cool down if necessary.]
5. Check radiator fan actuation 19. [Note: The radiator fan may also be actuated by the thermoswitch, automatic gearbox or air conditioner as a function of temperature. When performing final control diagnosis, make sure actuation does not take place for any of these reasons.Allow engine to cool down if necessary.]

6. Check radiator fan actuation 19.
7. Check charge air cooling pump relay actuation 19.
8. Check fuel pump actuation 20.
9. Check actuation of electric fuel pump 2
10. Check actuation of fuel cooling pump relay J44519. [Note: Final control diagnosis can only be repeated after starting the engine and then switching the ignition off and on again.]

Other AUDI procedures

• Removing and installing front sealing flange – Audi A4 B6/B7
• Checking exhaust gas recirculation
• Removing right cylinder head – Audi A8 D2
• Checking exhaust gas recirculation valves N18 and N213
• Checking glow plugs · 2 torque figures
• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures