Volkswagen Golf Service & Repair Manual: Releasing high pressure in fuel system
The fuel system is under high pressure.Risk of
injury due to fuel which may spurt out.Release high pressure.
| Special tools and workshop equipment
required |
| Vehicle diagnostic tester |
| Releasing high pressure in fuel system: |
| – |
Connect vehicle diagnostic tester and then carry out the
function “Reducing high fuel pressure” in “Guided functions”. |
| The fuel pressure will drop to the specified value. |
| The fuel rail is still filled with fuel, but the fuel is not
under high pressure anymore. |
| – |
After the high pressure has been released, the high-pressure
system must be opened »immediately«.
To do this, wrap a clean cloth around the connection before
opening it. Catch the escaping fuel. |
 Note
| If the high-pressure system is not opened immediately, the
pressure will rise again due to reheating effects. |
| Now the ignition must not be switched on anymore, because
switching the ignition on would cause the pressure to rise
again. |
| – |
Clear event memory and generate the readiness code in engine
control unit using “Guided functions” mode. |
|
|
|
Overview of fitting locations - engine compartment
1 -
Inlet camshaft control valve 1 -N205-
Removing and installing
→ Chapter
...
Other materials:
Removing and installing ignition key battery
Removing
–
Folding out key bit -1--arrow a-.
–
Use a small screwdriver -3- to
raise the cover of battery compartment
-2--arrow b-.
...
Assembly overview - towing bracket socket
1 -
Trailer detector control unit -J345-
Removing and installing
→ Chapter
2 -
Retaining frame
For trailer detector control unit -J345-
3 -
Trailer socket -U10-
...
General notes
Cleanliness specifications for working on
the auxiliary heater and fuel system
When working on the fuel supply and injection system, pay
careful attention to the following “rules”:
Thoroughly clean all unions a ...
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