32 KENR9126
Troubleshooting Section
•
The ECM is replaced.
•
Diagnostic code 0268-02 is active.
•
Electronic un
it injectors are exchanged between
cylinders.
Exchanging E
lectronic Unit Injectors
Exchanging electronic unit injectors can help
determine i
f a fault is in the electronic unit injector
or in the cylinder. If two electronic unit injectors that
are currently installed in the engine are exchanged
between cyl
inders, the injector trim files can also
be exchanged. Press the “Exchange” button at the
bottom of the “Injector Trim Calibration” screen on the
electroni
c service tool. Select the two electronic unit
injectors that will be exchanged and press the “OK”
button. The tattletale for the electronic unit injectors
that were e
xchanged will increase by one.
Note: The serial number for the electronic unit
injector
and the confirmation code number for the
electronic unit injector are located on the electronic
unit injector.
1. Record the serial number and the confirmation
code number for each electronic unit injector.
2. Obtain the injector trim file by one of the following
methods:
•
Select “Service Software Files” on t he Perkins
Internet.
•
Use the compact disc that is included with a
replacement electronic unit injector.
3. Enter the serial number for the electronic unit
injector in the search field.
4. Download the injector trim file to the PC. Repeat
this procedure for each electronic unit injector, as
requ
ired.
5. Connect the electronic service tool to the
diag
nostic connector. Refer to Troubleshooting,
“Electronic Service Tools”.
6. Tur
n the keyswitch to the ON position.
7. Select the following menu options on the electronic
ser
vice tool:
•
Service
•
Calibrations
•
In
jector Trim Calibration
8. Select the appropriate cylinder.
9. Click on the “Change” button.
10. Select the appropriate injector trim file from the
PC.
11. Click on the “Open” button.
12. If you are prompted by the electronic service
tool, enter the confirmation code number for the
electronic u
nit injector into the field.
13. Click on the “OK” button.
The injector trim file is loaded into the ECM.
14. Repeat the p
rocedure for each cylinder, as
required.
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