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Checking delivery rate > < Checking fuel pump

Golf Mk3

Checking function and voltage supply
Checking function and voltage supply
l  Battery voltage at least 11.5 V
l  Fuses in fuse holder relay plate -S18- OK
–  Switch on ignition.
Fuel pump must be heard to run briefly.
If the fuel pump does not start:
–  Switch off ignition.
–  Remove cover in front of relay plate.
   
–  Remove fuel pump relay -J17- from relay plate (relay position 12).
  Note
t  If tools are necessary to pull relays or control units out of the relay plate, first disconnect battery earth strap
t  Before disconnecting battery earth strap obtain code for radios with anti-theft coding.
–  Connect remote control for V.A.G 1348 -V.A.G 1348/3A- with adapter cable -V.A.G 1348/3-2- to contact 4 and battery positive (+).
–  Operate remote control.
If fuel pump runs:
–  Check activation of fuel pump relay -J17-
Engine codes AAM, ABS, ADZ, ANN, ANP with test box V.A.G 1598/18
Engine codes 2E, ADY, AGG, AKR → Engine mixture preparation; Rep. Gr.01
If fuel pump does not run:
–  Remove luggage compartment floor cover
–  Pull connector off fuel tank flange.
  N20-0009
–  Connect voltage tester -V.A.G 1527B- to outer contacts of connector using auxiliary cables from auxiliary measuring set -V.A.G 1594C-.
–  Operate remote control. LED must light up.
If LED does not light up:
–  Locate and eliminate open circuit using current flow diagram: → Current flow diagrams, Electrical fault finding and Fitting locations.
If LED lights up (voltage supply OK):
–  Unscrew union nut with union nut tool -3217-.
–  Check that electrical wires between flange and fuel pump are connected.
If no open circuit can be found:
–  Fuel pump is defective, renew fuel delivery unit → Chapter.
  N20-0072

Checking delivery rate > < Checking fuel pump