Checking glow period warning lamp K29: Audi A8 D2 2.5 TDI (AFB, AKE, AKN)

🧭 Before you start

Fits: Audi A8 D2 (4D)

• Special tools named: V.A.G 1598/30

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• Start final control diagnosis and activate glow period warning lamp K29.
• Check bulb for glow period warning lamp K29 in dash panel insert Electrical system90.

🔧 Engine codes this applies to

📋 Procedure

1. Start final control diagnosis and activate glow period warning lamp K29.
2. Complete final control diagnosis.
3. Switch off ignition.
4. Check bulb for glow period warning lamp K29 in dash panel insert Electrical system90.
5. Connect test adapter V.A.G 1598/30 to wiring harness for engine control unit .

6. Using a test lead from adapter setV.A.G 1594C, connect together sockets 1/04 and 4/30 on the test adapter.
7. Switch on ignition.
8. Check for open circuit and short to positive or earth in the following wiring connections .
9. Rectify open circuit or short circuit in wiring as necessary.
10. Renew diesel direct injection system control unit J248.

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