A4 Cabriolet L4-1.8L Turbo (AMB) (2005)
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Connect V.A.G 1318/17-1 adapter piece to return line.
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Pinch off adapter piece using 3094 hose clamps.
NOTE: 3094 hose clamps must not be placed directly on fuel line, otherwise it may be damaged.
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Start engine and let run at idle.
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Wait until pressure has risen, and then switch off ignition. Simultaneously close shut-off valve of V.A.G1318 pressure gauge (lever perpendicular
to direction of flow -arrow-).
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Observe pressure drop on pressure gauge.
If pressure drops again, check-valve of fuel pump is leaky.
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Replace fuel pump.
If pressure does not drop now:
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Replace fuel filter with integrated fuel pressure regulator.
Assembly is performed in the reverse order of removal, noting the following:
NOTE: Before disconnecting pressure gauge, release fuel pressure by opening shut-off valve. Hold a container in front of connection for this.
Final procedures
After repair work, the following work steps must be performed in the mentioned sequence:
1. Check DTC memory. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Scan Tool Testing/With Generic Scan Tool/Mode 3: Check DTC Memory
2. necessary, erase DTC memory see "Mode 4: Reset/erase diagnostic data". See: Powertrain Management/Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Generic Scan Tool/Mode 4: Reset/Erase Diagnostic Data
3. Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles
and Readiness Codes/Audi Drive Cycle/Readiness Code/With Generic Scan Tool/Readiness Code, Generating
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End diagnosis and switch ignition off.