Checking voltage supply of fuel system pressurisation pump G6 — AUDI
Checking voltage supply of fuel system pressurisation pump G6 on Audi: 13 steps, engines CAAA, CAAB, CAAC, CAAD.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Transporter T6 (7F), VW Transporter T6 (7E)
- Special tools named: VAS 5565
- Renewed: fuel delivery unit
Don't miss
- Switch ignition on. The fuel pump must be heard to run for about 2 seconds.
- The fuel tank has to be lowered in order to be able to remove the connector from the flange of the fuel pump unit
- The fuel pump is now actuated for 30 seconds.
📐 31 workshop diagrams for CAAA
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Pull out connector on supplementary fuel pump V393.
- Switch ignition on. The fuel pump must be heard to run for about 2 seconds.
- Switch off ignition.
- Pull connector off fuel delivery unit flange. [Note: The fuel tank has to be lowered in order to be able to remove the connector from the flange of the fuel pump unit]
- Remove cover of fuel delivery unit.
- Connect test instrument adapter/DSO (5-pin)VAS 5565 between connector and flange.
- Connect hand-held multimeterV.A.G 1526D to contacts (1) and (5) of adapter.
- Connect and carry out Test electric fuel pump(s). [Note: The fuel pump is now actuated for 30 seconds.]
- Read voltage value on hand-held multimeterV.A.G 1526D: Specification = battery voltage.
- Check activation of fuel pump relay and wiring for open circuit and short circuit .
- Remove fuel delivery unit .
- Check that the electrical lines between flange and fuel pump are connected and have continuity.
- Renew fuel delivery unit .
Ask TorqFix about your Audi CAAA — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.
Ask about your Audi CAAA — free → or sign up free to see the drawingsOther AUDI procedures
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.