Electronic Modular Control Panel II (EMCP II) Caterpillar

The possible causes of a CID 248 FMI 09 diagnostic code are listed below:

• There is a short from the wire that connects to contact "19" of the CAT data link to the battery ("B+").

• There is a short from the wire that connects to contact "20" of the CAT data link to the battery ("B+").

• There is a short from the wire that connects to contact "19" of the CAT data link to ground ("B-").

• There is a short from the wire that connects to contact "20" of the CAT data link to ground ("B-").

Test Step 1.

The GSC cannot detect an open in the circuit of the CAT data link. Troubleshoot the wiring and repair the wiring. See Testing And Adjusting, "Schematic and Wiring Diagrams".

Results:

• The GSC treats a CID 248 as an alarm fault. Active alarm faults are shown on the display when the alarm codes key is pressed. Also, the ECS is in any position except the OFF/RESET position. Clear the fault from the fault log after troubleshooting is complete. - Stop.