Checking current draw: VW Polo 6R (AUA, AUB, AXW, AXX, …)

🧭 Before you start

Fits: VW Polo 6R (2009–2014); platform codes 601, 602, 643, 604, 644, 603

• Special tools named: VAS 5565
• Renewed: fuel delivery unit

🔧 Engine codes this applies to

📋 Procedure

1. Observe safety precautions .
2. Observe rules for cleanliness .
3. Remove bench seat General body repairs, interior72Rear seat; Removing and installing bench seat / individual seats.
4. If fitted, unclip fuel pump control unit J538(2) from cover (1).
5. Unclip cover (1) at retaining tabs (arrows) using removing wedge3409.

6. Check that connector (1) on fuel pump control unit J538 is fitted securely by pulling connector without pressing catch. If connector was not inserted correctly, repeat functional check of fuel pump.
7. Release and pull off connector (1).
8. Check contacts on plug and on fuel delivery unit for damage.
9. Connect test instrument/DSO adapter (5-pin)VAS 5565 to connector and fuel delivery unit.
10. Connect multimeter to outputs (1) and (5) of test instrument/DSO adapter 5-pinVAS 5565.
11. Connect multimeter with auxiliary measuring setV.A.G 1594C.
12. Connect test instrument adapter/DSO (5-pin)VAS 5565 to connector and fuel delivery unit.
13. Connect pick-up clamp (A) to red terminal with lettering "“pick-up clamp”" for test instrument adapter/DSO (5-pin)VAS 5565.
14. Start engine and run it at idling speed.
15. Check current draw of fuel pump using multimeter. [Note: The starting current for the fuel pump can lie briefly above specifications when starting the engine.If the fault in the fuel system is not always evident, the check can also be carried out during a road test. A 2nd person is required to do this, however.]
16. Remove fuel delivery unit .
17. Check strainer of fuel delivery unit for soiling.
18. Check fuel tank for soiling.
19. Check fuel delivery unit for soiling.
20. Fuel pump is defective, renew fuel delivery unit .

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