AccuGrade Laser System Caterpillar

Illustration 1	g01082074
Schematic of the CAT Data Link Circuit

This diagnostic code is recorded if the power train ECM is unable to communicate over the cat data link with the implement control ECM.

The possible causes of this diagnostic code are listed:

• The engine ECM has failed. There are no serviceable parts within the implement control ECM.

• CAT Data Link has failed.

• Unable to establish communications with the power train ECM.

Note: Ensure that the diagnostic code for the implement control ECM is active.

Test Step 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 J2to the ECM.

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

4. Clear all inactive diagnostic codes.

5. Operate the machine.

6. Check whether CID 0248 FMI 09 is present.

Expected Result:

The CID 0248 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.

  Repair: Exit this procedure and perform this procedure again. If the problem remains, perform CID 0248 FMI 02. See Troubleshooting, "MID 114 - CID 0248 - FMI 02 " .

  Stop.