Checking power supply operation — VW

🧭 Before you start

• Special tools named: V.A.G 1348/3A, V.A.G 1466, V.A.G 1527, V.A.G 1594, 3217

Don't miss

• Turn on ignition system. The fuel pump must operate audibly for a short time -approx. 1 second-
• Ensure fuel pump relay is operating, according to current flow diagram, using V.A.G 1466 A: .
• Start remote control. LED must light up.

📋 Procedure

1. Fold backseat forward.
2. Remove cover below the seat.
3. Turn on ignition system. The fuel pump must operate audibly for a short time -approx. 1 second-
4. Switch ignition off.
5. Disconnect 1st. cylinder injector valve connector.

6. Connect remote control V.A.G 1348/3A to 1st cylinder injector valve connector and red clamp to the battery, positive borne (+).
7. Start remote control.
8. Ensure fuel pump relay is operating, according to current flow diagram, using V.A.G 1466 A: .
9. Disconnect 4-pole terminal connector on fuel pump flange.
10. Attach LED V.A.G 1527 B with auxiliary cables of V.A.G 1594 A to connector external contacts.
11. Start remote control. LED must light up.
12. Locate and correct cable interruption, according to current circuits scheme Current circuit scheme.
13. Disassemble pump fastening nut with tool VW 5321/7 or 3217.
14. Check if cables are connected between flange and fuel pump.
15. Renewing damaged fuel pump .

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