SEAT Workshop Service and Repair Manuals

Fuel pressure sender -G247-: check Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter. Special tools and workshop equipment required

t  Pressure gauge -VAS 6394-, see equivalent → Anchor

t  Polygonal wrench with 3/8´´ ratchet, 27 mm, see equivalent → Anchor t  Adapter -VAS 5570-, see equivalent → Anchor Operation process   WARNING The injection system is in a high pressure system (max. approx. 120 bar) and a low pressure system (approx. 6 bar). The fuel pressure in the high-pressure section must be reduced to a residual pressure of 6 bar prior to opening the high-pressure system. The work procedure for this is described in the chapter where the pressure reduction in the high pressure system is described → Chapter.

–  Disconnect the connector -1- and remove the fuel pressure sender -G247--2- using an open ring spanner.

–  Lubricate the taper seal of the adapter -VAS 6394/3- with clean engine oil and screw into the fuel rail. Tightening torque: 22 Nm

–  Unscrew the sealing plug -2- and screw in the fuel pressure sender -G247- into pressure tester -VAS 6394-. Tightening torque: 22 Nm –  Connect the pressure line of the pressure tester -VAS 6394/1- to the adapter -VAS 6394/3-.

–  Connect the fuel pressure sender -1- and its connector to the adapter for the testing function -VAS 5570-.

–  Switch on the pressure tester -VAS 6394/1- by pressing the switch -A- once.   Note t  If the -A- button is pressed for 2 seconds, the lighting illuminates for 20 seconds. t  If the pressure tester -VAS 6394/1- does not indicate 0 bar, calibrate the tester by setting to zero → Operating instructions. –  Connect the vehicle tester to the diagnosis connection. –  Switch on the ignition. –  Select the following options one after another on the display of the vehicle tester: Vehicle self-diagnosis Self-diagnosis► 01 - Engine electronics► 011 - Measured values► –  Select the measured value block 140 and confirm with Q. The actual value is displayed via the fuel pressure sender -G247- in display zone 3. –  Start the engine. –  The value displayed on the pressure tester -VAS 6394/1- is compared with the pressure displayed on the diagnosis device of the vehicle. l  The pressure difference should not be more than 5 bar. –  When the difference is more then 5 bar, the fuel pressure sender -G247- must be replaced.   WARNING The injection system is in a high pressure system (max. approx. 120 bar) and a low pressure system (approx. 6 bar). The fuel pressure in the high-pressure section must be reduced to a residual pressure of 6 bar prior to opening the high-pressure system. The work procedure for this is described in the chapter where the pressure reduction in the high pressure system is described → Chapter. –  Repeat the check with the new fuel pressure sender -G247- and compare both measurement values. If the values still do not correspond: –  Checking the wiring → Vehicle diagnostic, testing and information system VAS 5051.