Volkswagen Golf Service & Repair Manual: Checking fuel pressure sender -G247-
| Special tools and workshop equipment
required |
| Vehicle diagnostic tester |
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| Pressure sensor tester -VAS 6394- |
| Test instrument adapter/DSO (3-pin) -VAS 5570- |
| Socket, 27 mm (commercially available) |
The fuel system is under high pressure.Risk of injury due to fuel which
may spurt out.Release high pressure.
| Risk of functional impairment due to soiling
→ Chapter. |
| – |
Remove fuel pressure sender - G247-
→ Chapter. |
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| – |
Lubricate taper seal of adapter -VAS 6394/3- with clean
engine oil and screw into fuel rail (22 Nm). |
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| – |
Unscrew plug -2- and screw fuel
pressure sender - G247- into tester -VAS 6394/1-. |
| – |
Connect pressure line -1- of
tester to adapter -VAS 6394/3-. |
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| – |
Connect vehicle and fuel pressure sender - G247-
electrically using test instrument adapter/DSO (3-pin) -VAS
5570-. |
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| – |
Switch on tester -VAS 6394/1- by pressing button
-A- once briefly. |
 Note
| When button -A- is pressed for
2 seconds, the illumination is switched on for 20 seconds. |
| If tester -VAS 6394/1- does not indicate 0 bar, zero the
tester
→ Operating instructions. |
| – |
Connect vehicle diagnostic tester. |
| – |
Start engine and run at idling speed. |
| – |
Select “Engine electronics” in the self-diagnosis program. |
| – |
Then, select “Measured values”. |
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Select “Fuel pressure” from the list. |
| – |
Compare pressure displayed on tester -VAS 6394/1- with
actual value displayed on vehicle diagnostic tester. |
| – |
Watch the fuel pressure on the vehicle diagnostic tester. |
| A maximum pressure deviation of 5 bar is permissible. |
| – |
If the deviation is greater than 5 bar, renew fuel pressure
sender - G247-. |
| – |
Repeat test with new fuel pressure sender - G247- and
compare both measured values. |
| – |
If measured values are now the same, install new fuel
pressure sender - G247-. |
| – |
If measured values are not the same again, check electrical
connection between fuel pressure sender - G247- and engine
control unit -J623-
→ Current flow diagrams, Electrical fault finding and Fitting
locations. |
| → Chapter „Assembly overview - fuel rail with injectors“ |
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Special tools and workshop equipment
required
Assembly tool -T10118-
...
Other materials:
Assembly overview - rear centre three-point seat belt
1 -
Belt buckle
With rear belt switch, front passenger side -E259-
Removing and installing
→ Chapter
Always renew after belt tensioner has deployed with seat belt fastened
Must rest flat against contact surface when tightening nut
2&n ...
Wiring harness repair set -VAS 1978A-
The new wiring harness repair set -VAS 1978A- allows optimal
repair quality to be achieved in the area of vehicle electrics.
Using the new pliers, repairs to connectors and wiring open
circuits can be carried out. To do this, complete repair wire
section ...
Removing and installing airbag control unit -J23
Removing
WARNING
Observe safety instructions for pyrotechnic
components
→ Chapter.
–
...
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Removing and installing fuel pressure sender -G247-