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Skoda Workshop Service and Repair Manuals

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Check fuel flow rate > < Inspecting the fuel pump and fuel supply

Fabia Mk1

Inspecting proper operation and power supply
Inspecting proper operation and power supply
–  Fold rear seat forwards.
–  Remove the cover from the fuel delivery unit.
–  Switch on ignition. The fuel pump must be heard to start running.
–  Switch off ignition.
If the fuel pump does not run:
–  Remove cover from the fuse holder.
–  Remove fuse No. 61 from the fuse holder.
–  Connect remote control -V.A.G 1348/3A- with the adapter cable combination from the adapter cable set on the fuse holder 61 and to battery positive (+).
–  Activate remote control.
If the fuel pump starts running:
–  Testing fuel pump relay -J17- → Vehicle diagnostic tester.
If the fuel pump does not run:
–  Disconnect the 4-pin plug from the flange of the fuel delivery unit.
   
–  Connect multimeter for voltage measurement to contacts 1 and 4.
–  Activate remote control.
Specified value: approx. battery voltage.
If the nominal voltage is not reached:
–  Determine and remove open circuit in the wiring according to the current flow diagram → Current flow diagrams, Electrical fault finding and Fitting locations.
If the nominal voltage is reached:
  A20-0099
–  Unscrew union nut with wrench for union nut -MP1-227 (3217)-.
–  Remove the fuel delivery unit and check whether the electric wiring between the flange and fuel pump is connected.
If no open circuit was detected:
–  Replace fuel delivery unit → Chapter.
  S20-0054

Check fuel flow rate > < Inspecting the fuel pump and fuel supply