Checking voltages, LEDs and bulbs with test box (basic unit)V.A.G 1598/14. — AUDI

🧭 Before you start

• Special tools named: V.A.G 1598/14

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• Connect test box (basic unit)V.A.G 1598/14 with adapter lineV.A.G 1598/13 to dash panel insert and disconnected wiring harness (plug must audibly engage).

📋 Procedure

1. Fold down cover in front of relay plate.
2. Disconnect multi-pin connector behind dash panel insert (1).
3. Connect test box (basic unit)V.A.G 1598/14 with adapter line V.A.G 1598/13 to dash panel insert and disconnected wiring harness (plug must audibly engage).
4. Measuring range: Switch on voltage measurement (V).
5. Additional operations

6. Switch on ignition.
7. Connect test lamp.
8. Switch on left turn signal.
9. Connect test lamp.
10. Switch on right turn signal.
11. Switch on light switch.
12. Switch on high beam.
13. Apply handbrake.
14. Release handbrake.
15. Start engine.
16. Switch on ignition.

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