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Checking voltage supply of fuel system pressurisation pumpG6 > < Checking supplementary fuel pumpV393 or fuel pump 2V277 (inline EFP), engine codes CFFA, CFFB, CFGB, CFHB, CFHC, CLCA

Golf Mk6

Checking current consumption of fuel system pressurisation pumpG6
Checking current consumption of fuel system pressurisation pump -G6-
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 rear bench seat → General body repairs, interior; Rep. gr.72.
–  Fold carpet to the side or forwards.
–  Remove cover from fuel delivery unit.
   
–  Pull connector -C- off flange. Separating connector coupling → Chapter.
  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-.
Vehicles with 2.0 l diesel engine
–  Disconnect connector from supplementary fuel pump -V393- or fuel pump 2 -V277-(inline EFP) in engine compartment.
Continuation for all vehicles
–  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

Checking voltage supply of fuel system pressurisation pumpG6 > < Checking supplementary fuel pumpV393 or fuel pump 2V277 (inline EFP), engine codes CFFA, CFFB, CFGB, CFHB, CFHC, CLCA