SEAT Workshop Service and Repair Manuals

Checking fuel pump delivery 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 -VAG 1318-, please see equivalent → Anchor t  Adapters -V.A.G 1318/11- t  Adapters -V.A.G 1318/12-

t  Remote control -VAG 1348/3A- with adapter wire -V.A.G 1348/3-3-, see equivalent → Anchor t  Measuring container, fuel-resistant Test prerequisites l  Battery voltage at least 12.5 V.

l  Fuse in fuse holder -S228- (position 28) OK.

l  Control unit for fuel pump -J538- Check if OK → Chapter. l  Fuel filter, OK. l  Fuel tank at least 1/4 full. l  Ignition switched off Checking sequence –  Remove the luggage compartment cover. –  If necessary, fold forward right backrest of rear seat bench.

–  Loosen the bolts -arrows- and remove the fuel delivery unit.

–  Extract the connector -arrow- from the fuel delivery unit.

–  Connect the remote control -V.A.G 1348/3 A- with adapter cable -V.A.G 1348/3-3- to contact -1- with an auxiliary cable from the auxiliary measurement set -VAG 1594C-. –  Tape off 2nd connector contact of the adapter cable -V.A.G 1348/3-3- with insulating tape -arrow- to prevent short circuits. –  Join contact -4- to the bodywork earth using a cable from the auxiliary measurement set -VAG 1594C-. –  Connect crocodile clip to vehicle battery (+). –  Remove the filling cap from the fuel filler neck.

–  Detach engine cover -arrows-.   WARNING The fuel system is pressurised. Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the connection.

–  Remove the fuel line -arrow- to the connection of the line on the engine.

–  Connect pressure tester -VAG 1318- with adapters -V.A.G 1318/11- and -V.A.G 1318/12- to fuel supply line. –  Connect the auxiliary hose -arrow- and insert the other end in a measurement container. –  Open cut-off tap on pressure gauge. Lever must point in direction of flow. –  Build up pressure in fuel system by pressing the remote control and slowly closing the cut-off valve on the pressure tester. l  Specification: 4 bar –  From this point on do not move position of cut-off tap. –  Empty the measuring container. –  Press remote control switch for 15 seconds.

–  Compare amount of fuel delivered with minimum delivery shown in diagram (cm3/15 sec.).   Note Voltage at fuel pump with engine stationary and pump running is approx. 2 volts less than battery voltage. Assembly is carried out in the reverse order to removal; note the following: –  Install the fuel tank. Specified torque .

Components:	Nm
Fuel line for fuel distributor line	22