skoda Workshop Repair Guides

Skoda Workshop Service and Repair Manuals

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Inspecting fuel flow rate > < Check the fuel delivery unit

Fabia Mk1

Inspecting proper operation and power supply
Inspecting proper operation and power supply
–  Remove the trim panel of the fuel delivery unit.
–  Switch on ignition. The fuel delivery unit 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 in fuse holder 61 and to positive terminal of battery (+).
–  Activate remote control.
If the fuel pump starts running:
–  Test fuel pump relay → Current flow diagrams and Fitting locations
If the fuel pump does not run:
–  Disconnect the 4 pin plug from the fuel pump flange.
  S01-0094
–  Connect the multimeter for voltage measurement to contacts 1 and 4.
–  Activate remote control.
Specified value: approx. battery voltage.
If the specified value is not reached:
–  Establish and remove an open circuit in the wiring according to the current flow diagram → Current flow diagrams and Fitting locations
If the specified value is reached:
  A20-0099
–  Unscrew union nut with wrench -MP 1-227-.
–  Remove fuel pump and check whether the electric wiring between the flange and fuel pump is connected.
If there is no open circuit in the wiring:
–  Replace the fuel delivery unit.
  S20-0054

Inspecting fuel flow rate > < Check the fuel delivery unit