Testing fuel delivery rate of fuel system pressurisation pump G6 - engine codes CFHC, CFHF, CLCA — AUDI

🧭 Before you start

Fits: VW Caddy IV (SA, 2015–2020)

• Renewed: damaged line

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• Separate quick-release fastener (2) (black or with black marking) of fuel supply line Separating plug-in connectors.
• The fuel pump is now activated for 30 seconds.

🔧 Engine codes this applies to

📋 Procedure

1. Separate connector (A) on supplementary fuel pump V393.
2. Separate quick-release fastener (2) (black or with black marking) of fuel supply line Separating plug-in connectors.
3. Connect lineVAS 6550/1 of pressure tester to fuel supply line (2).
4. Feed open end of line in the measuring tank.
5. Connect vehicle diagnostic tester, and carry out guided function "“Check electrical fuel pump(s)”". [Note: The fuel pump is now activated for 30 seconds.]

6. Once fuel has ceased to flow, take delivered fuel quantity reading on measuring beaker. Specification: at least 1000 ml/30 seconds.
7. Check fuel supply line between fuel pump and engine compartment is not kinked, crushed or damaged.
8. Renew damaged line and repeat test.
9. If line is kinked, crushed or damaged, separate fuel supply line (1) on front right of fuel tank Separating plug-in connectors.
10. Connect lineVAS 6550/1 of pressure tester to fuel supply line (1).
11. Guide open end of line into a suitable container.
12. Connect vehicle diagnostic tester. Carry out "“Checking electric fuel pump(s)”" or "“Draining fuel system”", depending on software version of guided functions. [Note: The fuel pump is now activated for 30 seconds.]
13. Once fuel has ceased to flow, take delivered fuel quantity reading on measuring beaker. Specification: at least 1000 ml/30 seconds.
14. Check voltage supply and current consumption of fuel pump.
15. Check fuel filter .

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