SEAT Workshop Service and Repair Manuals

Vacuum system: Check t  Supply line, vacuum vessel and the non-return valve: check → Anchor t  Control line for the exhaust gas turbocharger: check → Anchor t  Control line to vacuum unit for exhaust gas recirculation cooler changeover function: check → Anchor Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter. Special tools and workshop equipment required

t  Manual vacuum pump -VAS 6213-, see equivalency → Anchor   Caution Do not kink, twist or crush the vacuum lines when routing. This may cause breakdowns.

–  Remove the engine cover upwards -arrows-. Supply line, vacuum vessel and the non-return valve: check –  Remove the switching valve for the radiator and the exhaust gas recirculation system -N345- from their mounts on the front side of the intake pipe.

–  Pull vacuum hose at lower connection -arrow in I- off exhaust gas recirculation cooler changeover valve -N345- and off charge pressure control solenoid valve -N75--arrow in II-. –  Seal open hose ends with suitable blanking plugs.   Note Do not use screws or threaded pins. –  Remove the vacuum hose -arrow- from the supports of the vacuum pump.

–  Connect hand vacuum pump -VAS 6213- to disconnected hose and generate a vacuum of 0.6 bar. –  Observe hand vacuum pump pressure gauge for approx. 30 seconds. l  Vacuum must not drop. If vacuum drops: –  Determine the damaged area or the leak in the hose and replace the respective hose section. If pressure does not drop: –  First separate the underpressure hose on the manual vacuum pump -VAS 6213-. –  Remove one of the blind plugs from the hose line. –  If the non-return valve functions properly, a clear hiss is audible when vacuum in vacuum reservoir is released. If no hiss is audible: –  Renew non-return valve. If a hiss is audible: –  Reconnect all disconnected vacuum hoses. –  Check control line to turbocharger → Anchor. Control line for the exhaust gas turbocharger: check

–  Remove the hose from the middle connection on the exhaust gas recirculation radiator switching valve -N75--arrow in I- and from the turbocharger pressure capsule-arrow in II-. –  Seal one hose opening using a suitable blanking plug.   Note Do not use screws or threaded pins. –  Connect hand vacuum pump -VAS 6213- to other hose end and generate a vacuum of 0.6 bar. –  Observe hand vacuum pump pressure gauge for approx. 30 seconds. l  Vacuum must not drop. If vacuum drops: –  Replace the vacuum hose. If pressure does not drop: –  Reconnect all disconnected vacuum hoses. –  Checking control line to vacuum unit for exhaust gas recirculation cooler changeover function → Anchor.

Control line to vacuum unit for exhaust gas recirculation cooler changeover function: check –  Remove the hose from the middle connection on the exhaust gas recirculation cooler change-over valve -N345--arrow-. –  Connect hand vacuum pump -VAS 6213- to disconnected hose and generate a vacuum of 0.6 bar. –  Observe the pressure gauge of the manual vacuum pump for 30 seconds. The vacuum must not drop. If the pressure drops: –  Remove the hose of the vacuum capsule of the radiator of the exhaust gas recirculation. –  Connect hand vacuum pump -VAS 6213- to vacuum unit with test hose supplied and generate a vacuum of 0.6 bar.   Note t  You must be able to recognise the functional sequence of the vacuum capsule and the vacuum must not drop. If this was not the case, the exhaust gas recirculation cooler system must be replaced → Chapter. t  When no fault of the underpressure capsule can be recognised, the vacuum line of the exhaust gas recirculation cooler change-over valve -N345- must be replaced.

–  Remove the engine cover upwards -arrows-.