BOLT-SPECIAL 9D8831 - Caterpillar

The Electronic Control Module (ECM) contains no moving parts. Replacement of the ECM can consume much time. Before you replace an ECM, follow the troubleshooting procedures in this manual in order to be sure that replacement of the ECM will correct the problem.Verify that the suspect ECM is the cause of the problem. Install a test ECM in place of the suspect ECM. Transfer the software from the suspect ECM to the test ECM. Program all the parameters for the test ECM in order to match the parameters of the suspect ECM. The parameters must match. Refer to the following test steps for details on programming the parameters.If the test ECM resolves the problem, reconnect the suspect ECM. Verify that the problem recurs. If the problem recurs, replace the suspect ECM with the test ECM.Note: If the parameters cannot be read from the suspect ECM, the parameters must be obtained from records or from the factory.Perform the following procedure to replace the ECM.Note: Before you replace an ECM, record all of the diagnostic codes.
Record the values for the parameters from the suspect ECM.
If you are using the Digital Diagnostic Tool (DDT), manually copy the values for the parameters onto the "Customer Specified Parameters Worksheet".
If you are using the Caterpillar Electronic Technician (ET), use the "Service/Copy Configuration/ECM Replacement" function of the Cat ET.Save the file. You can select "Load from ECM". You may also use the "Print" function in order to obtain a paper copy of the parameter settings.Note: Do not terminate the Cat ET.
Replace the ECM.
Set the engine control to the "OFF/RESET" mode.
Illustration 1 g01047096
Typical control panel for the ECM (1) Bolts and washers (2) Connectors
Remove the electrical power from the engine.
Disconnect two electrical connectors (2) .
Remove eight bolts and eight washers (1) .
Remove the ECM.
Use the mounting hardware to install the new ECM.
Restore the electrical power to the engine.
Set the engine control to the "STOP" mode.
Program the configuration parameters and the monitoring system parameters into the replacement ECM.
If you are using the DDT, manually program the values of the parameters from the "Customer Specified Parameters Worksheet" into the ECM.
If you are using the Cat ET, select "File/Select ECM" from the drop-down menu.
Select the replacement ECM and click "OK".
Select "Service/Copy Configuration/ECM Replacement" from the drop-down menu. Click "OK" on the window.
Select "Program ECM" from the lower left corner of the screen. Select the replacement ECM and click "OK". If the correct ECM is shown, select "Yes".
After the loading is complete, a window with the message "Programming Conflict Warning" will appear. Select "OK".
A window with the message "Program ECM Results" will appear. Select "OK".