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Checking current consumption of fuel system pressurisation pump > < Checking fuel system pressurisation pump delivery rate

Leon Mk2

Checking voltage supply of fuel system pressurisation pump
Checking voltage supply of fuel system pressurisation pump
Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.
Special tools and workshop equipment required
   
t  Manual multimeter -V.A.G 1526D-, see equivalent → Anchor
  W00-10706
t  Measurement adapter / DSO (5-pin) -VAS 5565-, see equivalent → Anchor
t  Ammeter clamp -V.A.G 1526B/2-
t  Vehicle diagnostic, testing and information system -VAS 505X-, see equivalent → Anchor
Test prerequisites
l  Fuses must be OK.
l  The battery voltage must be at least 12 V, if necessary connect a battery charger.
l  All electrical consumers, e.g. lights and rear window heating, must be switched off.
l  Visual check of cables OK.
  W00-10599
Checking sequence
–  Fold rear seat bench forwards.
–  Raise cover of fuel delivery unit.
  N20-10606
–  First check that connector -arrow- is fitted securely by pulling connector without pressing catch. The connector can cause a fault if it has not been fitted correctly.
–  Separate the connector -arrow- from the flange of the fuel tank.
–  Connect test instrument/DSO adapter (5-pin) -VAS 5565- between connector and flange.
  N20-10623
–  Connect hand-held multimeter -V.A.G 1526D- to contacts -1- and -5- of adapter.
–  Connect the Vehicle diagnostics tester -VAS 505X- and perform the guided function „Fuel pump: Actuate (Fuel pump: check “.
  Note
The fuel pump is now activated for 30 seconds.
–  Read off the current consumption on the hand-held multimeter -V.A.G 1526D-: Setpoint value = Battery voltage (- 0.5 V o.k.).
If no voltage is present:
–  Check the activation of the pump relay and the cables to see if there is a false contact or short circuit. → Vehicle diagnostic tester
Voltage supply okay.
Check current consumption of fuel pump → Chapter.
  N20-10423

Checking current consumption of fuel system pressurisation pump > < Checking fuel system pressurisation pump delivery rate