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Repairing electronic power control (EPC) > < Fuel delivery quantity: check

Leon Mk2

Current consumption: check
Current consumption: check
–  Remove the rear seat bench → Bodywork, interior fitting work; Rep. gr.72
   
–  Remove the cover -1- of the fuel delivery unit together with the fuel pump control unit -J538--2-.
  N20-0603
–  First check that connector -1- is fitted securely by pulling connector without pressing catch. Malfunctions may arise when the connector has not been inserted correctly.
–  Detach connector.
–  Check the contact on the plug connector and the fuel supply unit for damage.
  N20-10622
–  Connect test instrument/DSO adapter (5-pin) -VAS 5565- to connector and fuel delivery unit.
–  Connect the ammeter clip -A-to the red cable marked „Stromzange (ammeter clip)“ on theDSO (5 contact) adapter for the measuring/oscilloscope module -VAS 5565-.
–  Start engine and run at idling speed.
–  Measure the power consumption of the fuel pump:
l  Specification: 9 Amps maximum
  Note
t  The starting current of the fuel pump can be more than the specification for a short period when starting the motor.
t  When an irregular fault of the fuel system occurs sporadically, the inspection can also be carried out for a test drive. The help of a second mechanic will be needed.
If the current draw is exceeded:
–  Fuel pump is defective, renew fuel delivery unit → Chapter.
  N20-10424

Repairing electronic power control (EPC) > < Fuel delivery quantity: check