Volkswagen CJDA Workshop Manual page 395

– After installation, run engine at moderate speed for several
minutes and then switch off.
– Check fuel system for leaks
– Then, read event memory of engine control unit, and clear
event memory if necessary
– Perform a road test/test run, accelerating to full throttle at
least once. Check high pressure part of fuel system again for
leaks.
– Finally, read event memory of engine control unit again
⇒ P age
26.
1.13 Removing and installing fuel pressure
sender -G247-
The fuel pressure sender -G247- (fuel rail pressure sensor) -B-
is located in the fuel rail and continuously measures the current
fuel pressure in the high-pressure system. It transmits a corre-
sponding voltage signal to the diesel direct injection system
control unit -J248-.
In the event of sender failure, pressure regulation is controlled
using a map from the engine control unit. In back-up function,
the maximum engine speed is limited to approx. 3,000 rpm.
Special tools and workshop equipment required
◆ Engine bung set -VAS 6122-
Removing
Caution
Always read rules for cleanliness and instructions for
working on fuel system
Follow these instructions before starting work and while
working on the fuel system.
– Clean threaded area around sender (e.g. with commercially
available cold cleaning solvent) before removing. Under no
circumstances may dirt enter the hole of the high pressure
accumulator.
Note
Clean carefully; cleaning solvent must not enter the electrical
connector.
– Dry off fuel pressure sender -G247-.
– Disconnect electrical connector at fuel pressure sender
-G247-.
– Unscrew fuel pressure sender -G247-.
– Extract dirt from fuel rail bore (threads and sealing surface).
Do not use tools or other instruments for this purpose.
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
⇒ P age
384.
⇒ P age
26, read event memory.
⇒ P age
354.
Industriemotoren - Industrial Engines 2009 ▶
1 Repairing diesel direct injection system
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