Passat Sedan V6-3.6L (BLV) (2008)
Make sure the drain valve lever - C - is closed and levers - A and B - are open.
Activate the fuel pump with output Diagnostic Test Mode (DTM) to build fuel pressure.
Check the fuel pressure on the (VAS 6550).
‹› Specified value: 4.0 to 7.0 bar.
If fuel pressure is OK, check the residual pressure. Refer to => [ Residual Pressure, Checking ]. See: Computers and Control Systems/Testing and
Inspection/Component Tests and General Diagnostics/Diagnostic Procedures/Fuel Pump, Checking/Residual Pressure, Checking
If the Specification is Exceeded
If the pressure relief valve in the fuel filter is faulty, then replace the flange with fuel filter:
Front Wheel Drive (FWD), refer to - item 20 -=> [ Flange with Fuel Filter ] See: Fuel Tank/Service and Repair/Removal and Replacement/Fuel
Tank and Components Overview.
All Wheel Drive (AWD), refer to - item 22 -=> [ Flange with Fuel Filter ] See: Fuel Tank/Service and Repair/Removal and Replacement/Fuel Tank
and Components Overview.
If the Specification is not Obtained
Check the fuel lines for possible restrictions (kinks) or blockages.
If no malfunction can be found:
Replace the flange with fuel filter and pressure relief valve, refer to one of the following: