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Repairing electronic power control (EPC) > < Testing quantity of fuel delivered

Leon Mk2

Checking current draw
Checking current draw
–  Fold rear seat forwards.
   
–  Remove the cover -1- of the fuel delivery unit together with the fuel pump control unit -J538--2-.
  N20-0603
–  First check that the connector -arrow- is fitted securely by pulling the connector without pressing the catch. The connector can cause a fault if it has not been fitted correctly.
–  Separate the electrical connector.
–  Check the contacts on the connector and on the fuel delivery unit for damage.
  N20-10623
–  Connect test instrument/DSO adapter (5-pin) -VAS 5565- to connector and fuel delivery unit.
–  Connect pick-up clamp -A- to red terminal with lettering „pick-up clamp“ for test instrument adapter/DSO (5-pin) -VAS 5565-.
–  Start engine and leave running at idling speed.
–  Measure current draw of fuel pump.
l  Specification: 9 Amps maximum
  Note
t  The starting current for the fuel pump can lie briefly above specifications when starting the engine.
t  If the fault in the fuel system is not always evident, the check can also be carried out during a road test. To do this a second person is necessary.
If the current draw is exceeded:
–  Fuel pump defective, renew fuel delivery unit → Chapter.
  N20-10424

Repairing electronic power control (EPC) > < Testing quantity of fuel delivered