COVER 4743360 - Caterpillar

Use this procedure under the following situation:Use this procedure for any of the following diagnostic codes:
0001-02 Cylinder #1 Injector erratic, intermittent, or incorrect
0002-02 Cylinder #2 Injector erratic, intermittent, or incorrect
0003-02 Cylinder #3 Injector erratic, intermittent, or incorrect
0004-02 Cylinder #4 Injector erratic, intermittent, or incorrect The following background information is related to this procedure:The engine has electronic unit injectors that are controlled by the ECM. The Electronic Control Module (ECM) sends a pulse to each injector solenoid. The pulse is sent at the correct time and for the correct duration for a given engine load and engine speed. Use this procedure to identify the cause of the diagnostic code. Use this procedure to repair the system.If an injector is replaced, then the correct trim file for the injector must be programmed into the ECM. The trim files for the injectors allow each individual injector to be fine tuned for optimum performance. The ECM will generate the following diagnostic code if the injector codes are not programmed:
0268-02 Programmed Parameter Fault erratic, intermittent, or incorrectRefer to Troubleshooting, "Injector Trim File" for further information.If the ECM is replaced then the replacement ECM must be correctly programmed. Refer to Troubleshooting, "Replacing the ECM" for further information.Use the