ROD AS 1438012 - Caterpillar

Table 4
FMI 14 Troubleshooting
Troubleshooting Test Steps Values Results
1. Check For Related Diagnostic Codes
A. The FMI 14 diagnostic code for the Data Link is active. Look for one of the active control module diagnostic codes that is listed at the beginning of this procedure.
One of the control module diagnostic codes that is listed at the beginning of this procedure is active. OK - One of the control module diagnostic codes that is listed at the beginning of this procedure is active.
Repair: Go to the troubleshooting procedure for the active control module CID FMI diagnostic code. Perform the troubleshooting procedure for the Data Link circuit that is detailed for the control module in order to isolate the problem.
Proceed to Test Step 2.
2. Check If The Diagnostic Code Remains
A. Turn the start switch and the disconnect switch ON.
B. Clear all diagnostic codes.
C. Operate the machine.
D. Stop the machine and engage the safety lock lever.
E. Check if the diagnostic code is active.
The diagnostic code is no longer present. OK - The diagnostic code does not exist at this time. The initial diagnostic code may have been caused by poor electrical connection or short at one of the harness connections. Resume machine operation.
STOP.
NOT OK - The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the ECM may require replacement.
Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with Caterpillar. This consultation may affect repair time.
Follow the steps in Troubleshooting, "ECM - Replace" if the ECM needs to be replaced.
STOP.