SEAT Workshop Service and Repair Manuals

Fuel pressure sender -G247-: check Special tools and workshop equipment required

t  Assembly tool -T10118- t  27 mm socket -VAS 5301/7-

t  Pressure sensor tester -VAS 6394- t  Adapter for the testing functions -VAS 5570- Operation process   WARNING The fuel pressure sender is under pressure. Wear safety goggles and protective clothing to avoid possible injury and skin contact. Before detaching the fuel pressure sender, place a cloth around the connection point. Then release pressure by carefully relieving pressure. –  Fuel pressure sender -G247- removal → Chapter

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

–  Lubricate the taper seal of the adapter -VAS 6294/2- with clean engine oil and screw into the fuel rail. Tightening torque: 22 Nm

–  Connect the pressure line of the pressure tester -VAS 6394/1- to the adapter -VAS 6394/2-. –  Connect the fuel pressure sender-1- and the electric connector of the fuel pressure sender with the testing adapter -VAS 5570-. –  Reinstall the cover trim of the motor / air filter and connect the air mass gauge -G70-.

–  Switch on the pressure tester -VAS 6394/1-. Briefly press the -A- button for this purpose.   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 ignition. –  Select the following options one after another on the display of the vehicle diagnosis device: Vehicle self-diagnosis Self-diagnosis► 01 - Engine electronics► 011 - Measured values► –  Select the measured value block 140 and confirm with Q button. 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 vehicle diagnosis device. 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 pressure tester -VAS 6394- is under high fuel pressure. Disconnect the connector from the fuel pressure sender -G247- when the engine is running. This should result in the fuel pressure dropping to approx. 6 bar. Switch ignition OFF. Wrap a clean cloth around the fuel pressure sender -G247- and then dissipate the residual pressure by carefully loosening the fuel pressure sender -G247-. –  Repeat the check with the new fuel pressure sender -G247- and compare both measurement values. If the values still do not correspond: –  Check the lines → Vehicle diagnostic tester.