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Checking voltage supply of fuel system pressurisation pumpG6 > < Checking delivery pressure of fuel pump

Leon Mk2

Checking fuel delivery rate of fuel system pressurisation pumpG6
Checking fuel delivery rate of fuel system pressurisation pump -G6-
Special tools and workshop equipment required
t  Pressure tester -VAS 6550-
t  Container > 3 litres with measurement scale
t  Vehicle diagnosis, testing and information system
Test prerequisite:
l  Fuses must be OK.
l  Battery voltage: min. 12 V
l  All electrical consumers, e.g. lights and rear window heating, must be switched off.
   
–  Unplug connector -A- at supplementary fuel pump -V393- or on the fuel pump 2 -V277-.
  N20-10467
–  Remove the quick connector -A- (black or with black markings) from the fuel supply line.
–  Connect -VAS 6550/1- pressure tester cable to fuel supply -A-.
–  Guide the open end of the line into a measuring container.
–  Connect diagnosis tester and perform the guided function „Checking electric fuel pump(s)“.
  Note
The fuel pump is now activated for 30 seconds.
–  As soon as the fuel flows, read-off the fuel quantity supplied on the measuring container. Specification: min. 1000 ml/30 seconds
If specification is not obtained:
–  Check the fuel line between the pump and the engine compartment for bends, crushing and for damage.
–  If a defect is established, replace the line and repeat the test.
–  If no bends, crushing or damage are determined, proceed as described in the following.
Altea, Altea XL
–  Remove rear seats → Bodywork, interior installation work; Rep. gr.72
León
–  Remove the rear seat → Bodywork, interior installation work; Rep. gr.72.
Continued for all vehicles
–  Remove cover of fuel delivery unit.
  Note
Press in safety ring to release fuel lines.
  N20-10436
–  Remove the fuel supply unit (black or with black markings) -A- from the fuel supply unit.
–  Connect -VAS 6550/1- pressure tester cable to fuel supply -A-.
–  Guide the open end of the line into a measuring container.
–  Connect diagnosis tester and perform the guided function „Checking electric fuel pump(s)“.
  Note
The fuel pump is now activated for 30 seconds.
–  As soon as the fuel flows, read-off the fuel quantity supplied on the measuring container. Specification: min. 1000 ml/30 seconds
If specification is not obtained:
–  Check the power supply and → Chapterthe power consumption → Chapterof the fuel pump.
  N20-10510

Checking voltage supply of fuel system pressurisation pumpG6 > < Checking delivery pressure of fuel pump