ELECTRONICS GP-ENGINE RATINGS 2051223 - Caterpillar

Table 3
FMI 19 Troubleshooting
Troubleshooting Test Steps Values Results
1. Check For Diagnostic Codes Related To Data Link
A. Connect a laptop loaded with the latest version of Cat ET to the service connector.
B. Note all diagnostic codes related to the data link.
C. Perform the troubleshooting procedure to correct the active diagnostic codes.
All troubleshooting has been performed, the diagnostic code is no longer active. OK - All troubleshooting has been performed, the diagnostic code is no longer active.
Proceed to Test Step 2.
NOT OK - All troubleshooting has been performed, diagnostic code is still active.
Repair: Perform this procedure again. If the failure is not found, replace the ECM.
Proceed to Test Step 2.
2. Check If The Diagnostic Code Remains
A. Turn the key 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 effect repair time.
Follow the steps in Troubleshooting, "ECM - Replace" if the ECM needs to be replaced.
STOP.