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Inspecting fuel flow rate > < Test conditions

Octavia Mk1

Test sequence
Test sequence
–  Switch on ignition.
–  The fuel pump must be heard to start (a second person is required for this purpose if the level of surrounding noise is high).
If the fuel pump does not run:
–  Switch off ignition.
–  Connect up remote control -V.A.G 1348/3A- using adapter cables -V.A.G 1348/3-2- → Chapter
–  Activate remote control.
If the fuel pump starts running:
–  Test fuel pump relay → 1.6 litre/75 kW Engine, Fuel Injection and Ignition System; Rep. Gr.01.
If the fuel pump does not run:
–  Unscrew cover (below rear seat).
–  Unlock and unplug 4-pin connector of flange at fuel tank.
   
–  Connect hand-held multimeter (e.g. -V.A.G 1715-) to the outer contacts of the plug using adapter cables.
–  Activate remote control. Specified value: approx. battery voltage.
If the specified value is not reached:
–  Determine and remove open circuit in the wiring according to the current flow diagram → Current flow diagrams and Fitting locations.
If the specified value is reached:
–  Unscrew union nut with wrench -MP 1-227-.
–  Check whether the electric cables are connected between flange and fuel pump, and test for continuity if necessary.
If no open circuit was detected:
Fuel pump faulty.
–  Replacing fuel delivery unit → Chapter.
  A20-0099

Inspecting fuel flow rate > < Test conditions