TM 5-3805-291-23-2
FUEL INJECTORS AND WIRING HARNESS MAINTENANCE - CONTINUED
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EXCHANGING INJECTORS
Exchanging injectors can help determine if combustion problem is in injector or in cylinder. If two injectors that are cur-
rently installed in engine are exchanged between cylinders, injector trim files can also be exchanged. Press "Exchange" button
at bottom of "Injector Trim Calibration" screen on ET. Select two injectors to be exchanged and press "OK" button. Tattletale
for injectors that were exchanged will increase by one.
N OT E
Injector serial number and injector confirmation code are located on injector. ET may require entry of
injector confirmation code during this process. ET will prompt you for code, if necessary.
1.
Record injector serial number and injector confirmation code for each injector (2).
2.
Connect ET to diagnostic tool connector.
3.
Select these menu options on ET:
a.
Service
b.
Calibrations
c.
Injector Trim Calibration
4.
Select appropriate cylinder.
5.
Click "Change" button.
6.
Select appropriate injector trim file from PC (on CD).
7.
Click "Open" button.
8.
If you are prompted by ET, enter injector confirmation
code into field.
9.
Click "OK" button. Injector trim file is loaded into
427-C0442
ECM.
10.
Repeat steps 1 thru 9 for each cylinder, as required.
END OF WORK PACKAGE
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