D250E Series II, D300E Series II, D350E Series II and D400E Series II Articulated Trucks Power Train Electronic Control System Caterpillar

The possible causes of this diagnostic code are listed:

• The engine ECM is faulty. There are no serviceable parts within the engine ECM.

• Cat Data Link has failed.

Note: Ensure that the CID 0590 FMI 09 for the relay is active.

1. VERIFY THAT THE DIAGNOSTIC CODE IS PRESENT.

   1. Turn the key start switch and the disconnect switch to the OFF position.

   2. Remove connectors J1 and J2 from the ECM and reconnect connectors J1 and J2 to the ECM.

   3. Turn the key start switch and the disconnect switch to the ON position.

   4. Enter the service mode of the Caterpillar Monitoring System and clear all inactive diagnostic codes.

   5. Operate the machine.

   6. Check whether CID 0590 FMI 09 is present.

      Expected Result: The CID 0590 FMI 09 is NOT present.

      Results:

      • OK - The diagnostic code is NOT present. Resume normal machine operation. STOP.

      • NOT OK - The diagnostic code remains present. Exit this procedure and perform this procedure again. If the problem remains, perform CID 0248 FMI 09. See Testing And Adjusting, "CID 0248 FMI 09 CAT Data Link Abnormal Update - Test". STOP.