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Assembly overview - fuel filter > < Checking voltage supply of fuel pump

Golf Mk5

Checking current draw of fuel pump
Checking current draw of fuel pump
Special tools and workshop equipment required
t  Hand-held multimeter -V.A.G 1526D- or pickup clamp -V.A.G 1526B/2-
t  Test instrument adapter/DSO (5-pin) -VAS 5565-
t  Vehicle diagnosis tester
  Note
The battery voltage and the diesel fuel temperature have a great influence on the current draw of the fuel pump. For this reason ensure that the battery voltage is at least 12 V whilst checking and the diesel fuel temperature does not fall to the freezing point.
Test prerequisites
l  Battery voltage at least 12 V
l  Diesel fuel temperature above 10 °C
–  Remove seat bench → General body repairs, interior; Rep. gr.72.
–  Detach carpet under seats and fold it back. → General body repairs, interior; Rep. gr.70
–  Remove cover from fuel delivery unit.
   
–  Pull connector -C- off flange.
  N20-10510
–  Connect test instrument adapter/DSO (5-pin) -VAS 5565- to connector and fuel delivery unit.
–  Connect pick-up clamp -A- to red terminal with lettering „pick-up clamp“ for test instrument adapter/DSO (5-pin) -VAS 5565-.
  Note
Pickup clamp of hand-held multimeter -V.A.G 1715- can also be connected to red terminal with lettering „pickup clamp“ of test instrument adapter/DSO (5-pin) -VAS 5565-.
–  Switch on ignition.
–  Connect diagnosis tester and perform the guided function „Checking electric fuel pump(s)“.
  Note
The fuel pump is now activated for 30 seconds.
–  Read current draw on hand-held multimeter -V.A.G 1526D-. Specification: max. 7.5 amps.
–  If the measured value is not within specifications:
–  Renew fuel delivery unit → Chapter.
  N20-10424

Assembly overview - fuel filter > < Checking voltage supply of fuel pump