SHAFT AS 1888707 - Caterpillar

Illustration 1 g02738616
Typical example of an electronic unit injector
(1) Location of the injector code
Record the injector code for each electronic unit injector.
Connect the electronic service tool to the diagnostic connector. Refer to Troubleshooting, "Electronic Service Tools".
Turn the keyswitch to the ON position.
Select the following menu options on the electronic service tool:
Service
Calibrations
Injector Trim Calibration
Select the appropriate cylinder.
Click on the "Change" button.
Input the applicable injector code that was recorded in Test Step 1.
Click on the "OK" button. The injector code is loaded into the ECM.
Repeat the procedure for each cylinder, as required. Exchanging Electronic Unit InjectorsExchanging electronic unit injectors can help determine if a combustion problem 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 cylinders, the injector codes must also be exchanged. Record the injector trim codes for the two injectors that are to be exchanged. Use the electronic service tool to enter the injector codes for the correct cylinders.