Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 720
– Remove the connector -arrow- from the generator, otherwise
the socket can get hooked to the connector.
– Loosen and remove the Fuel Pressure Sensor - G247- -1- us‐
ing the Socket - 27mm - T40218-
Installing
– Coat the Fuel Pressure Sensor - G247- sealing point with
clean engine oil.
– Install in reverse order of removal.
Tightening Specifications
♦ Refer to
⇒ “4.2.1 Overview - Intake Manifold Lower Section with Fuel
Rail, Direct Fuel Injection”, page 300
5.3
Fuel Pressure Sensor - G247- , Check‐
ing
Special tools and workshop equipment required
♦ Pressure Sensor Tester - VAS6394/1-
♦ Adapter - VAS6394/2-
♦ Vehicle Diagnostic Tester - Test Adapter - 3 Pin - VAS5570-
♦ Torque Wrench 1331 5-50Nm - VAG1331-
♦ Vehicle Diagnostic Tester
Work Procedure
– Remove the engine cover. Refer to
⇒ “3.1 Engine Cover, Removing and Installing”, page 38
CAUTION
Fuel system is under high pressure.
Risk of injury from fuel spraying out.
– Reducing the fuel high pressure.
– Remove the Fuel Pressure Sensor - G247- . Refer to
⇒ “5.2 Fuel Pressure Sensor G247 , Removing and Installing”,
– Install the Pressure Sensor Tester - Adapter - VAS6394/2- in‐
stead of the Fuel Pressure Sensor - G247- . Tighten it to the
tightening specification for the Fuel Pressure Sensor - G247- .
– Open the Digital Manometer - VAS6394/1- sealing plug -2-
and install the removed Fuel Pressure Sensor - G247- in the
opening using the tightening specification.
– Use the Vehicle Diagnostic Tester - Test Adapter - 3 Pin -
VAS5570- in order establish the electrical connection between
the vehicle and the Fuel Pressure Sensor - G247- .
Note
For further work the engine must be started. For this reason the
intake hose and air filter housing must be reinstalled.
– Connect the Vehicle Diagnostic Tester .
– Turn on the ignition.
– Select “engine electronics” in On Board Diagnostics (OBD).
– Select “measured values”
– Select “fuel pressure” from the list.
The current value is displayed in field, which the Fuel Pressure
Sensor - G247- reports to the Engine Control Module (ECM).
– Briefly press the button -A- once to turn on the Digital Man‐
ometer - VAS6394/1- .
Note
Holding the button -A- for two seconds switches on the illumina‐
tion for 20 seconds.
The Digital Manometer - VAS6394/1- must display 0 bar/psi; if this
is not the case, press the button -C- once briefly to set it back to
zero.
– Connect the Digital Manometer - VAS6394/1- to the Pressure
Sensor Tester Adapter - VAS6394/2- .
– Start the engine.
– Compare the pressure shown in the Digital Manometer -
VAS6394/1- with the actual value in the Vehicle Diagnostic
Tester
• The pressures may have a maximum difference of 5 bar (72.5
psi).
– If the difference is greater than 5 bar (72.5 psi), test a new Fuel
Pressure Sensor - G247- .
CAUTION
Fuel system is under high pressure.
Risk of injury from fuel spraying out.
– Reducing the fuel high pressure.
– Insert the new Fuel Pressure Sensor - G247- in the Digital
Manometer - VAS6394/1- .
– Repeat the test with the new Fuel Pressure Sensor - G247-
and compare both values.
If the Measured Values Do Not Now Match Again
– Check the electrical connectors between the Fuel Pressure
Sensor - G247- and the ECM. Refer to ⇒ Wiring diagrams,
Troubleshooting & Component locations.
If the Measured Values Now Match
– Install a new Fuel Pressure Sensor - G247- . Refer to
⇒ “5.2 Fuel Pressure Sensor G247 , Removing and Installing”,
Tightening Specifications
♦ Refer to
⇒ “4.2.1 Overview - Intake Manifold Lower Section with Fuel
Rail, Direct Fuel Injection”, page 300
5.4
Low Fuel Pressure Sensor - G410- , Re‐
moving and Installing
Caution
This procedure contains mandatory replaceable parts. Refer
to component overview prior to starting procedure.
Mandatory Replacement Parts
♦ O-ring - Low fuel Pressure Sensor
Note
Only on vehicles with intake-manifold fuel injection
Removing
– Remove the engine cover. Refer to
– Disconnect the connector -6- from the Low Fuel Pressure
Sensor - G410- .
– Remove the clamps -2-.
– Remove the Low Fuel Pressure Sensor - G410- -1- from the
fuel rail.
– Remove the Low Fuel Pressure Sensor - G410- -1- from the
adapter -2-.
Installing
– Replace the O-ring -arrow-.
– Bolt together the adapter -2- and the Low Fuel Pressure Sen‐
sor - G410- -1-.
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