Jetta L5-2.5L (BGP) (2006)
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Compare the fuel quantity pumped with the specified value.
Minimum delivery rate cu.cm/30 s
Voltage at the fuel pump with the engine off and the fuel pump running (approx. 2 Volts less than battery voltage).
Read-out example:
During test, a voltage of 12.5 Volts is measured at battery. Since voltage at the pump is approx. 2 Volts less than battery voltage, there is a minimum
delivery rate of approx. 580 cu.cm/30 s.
If the minimum delivery rate is not obtained:
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Check fuel lines for restrictions (kinks) or clogging.
If no malfunction can be found:
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Disconnect the supply hose - 1 - from the fuel filter input.
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Connect a High pressure fuel gauge between the fuel filter and fuel supply line.
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Repeat the delivery rate test.
If the minimum delivery rate is obtained:
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Replace the fuel filter. For all fuel supply system removal/installation procedures and torque specifications.
If the minimum delivery rate is not obtained:
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Remove the fuel pump and check the strainer filter for dirt.
If no malfunctions have been found:
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Replace the fuel pump. For all fuel supply system removal/installation procedures and torque specifications.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 03 -
Read DTC Memory
2. If necessary, erase the DTC memory. See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic
Mode 04 - Erase DTC Memory
3. If the DTC memory was erased, generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes
End of diagnosis.