TROUBLESHOOTING USING GSC FAULT CODES - Continued
CID 248 FMI 09
CAT data link.
FMI 09 - Abnormal Update.
Turn the ENGINE CONTROL switch to OFF/RESET. Battery Disconnect Switch
is OFF; DEAD CRANK SWITCH is OFF.
Disconnect ENG-P1 from ECM.
Verify continuity between CDC P7-E and ENG P1-9 and between CDC P7-D and
ENG P1-8 per FO-4, sheet 1, FO-2, sheet 2 and WP 0090, Figure 2, sheet 3.
a. Repair or replace harness, as required (WP 0090).
b. If the problem is not resolved, continue to STEP 4.
Perform Electronic Service Tool (Cat ET) will not communicate with ECM (WP
Verify the problem has been resolved.
This code indicates that a customer or system parameter has not been programmed, or the code
in the personality module in the ECM does not match the code for the ECM. The engine may be
CID 253 E FMI 02
Personality module mismatch.
FMI 02 - Erratic, Intermittent, or Incorrect Signal.
Set Battery Disconnect Switch to ON, Set DEAD CRANK SWITCH to NORMAL.
On EMCP, turn the ENGINE CONTROL switch to COOL DOWN/STOP.
Verify the flash file in the ECM (WP 0013, SYMPTOM 12).
If flash file is incorrect, load correct flash file into the ECM.
If the problem is not resolved, replace ECM (WP 0084).
Load correct flash file into ECM (WP 0013, SYMPTOM 12).
Verify the problem is resolved.