MSS3s Machine Security System Caterpillar

ECM - Replace

Usage:

120G 11W

Follow this procedure to replace the MSS3s ECM without deleting the original configuration and/or the information from the key database.

Note: This procedure assumes that the failed MSS3s ECM is able to communicate via the communication adapter. That adapter communicates with the Caterpillar ^® Electronic Technician (Cat ^® ET) service tool.

Turn the disconnect switch to the ON position.
Connect the communications adapter between the machine and the PC.
Use a master access level key to turn the keyswitch to the ON position. Verify the status LED is green.
Start the Cat ET service tool. Allow Cat ET service tool to connect with the Cat data-link. If the Cat ET service tool detects more than one ECM, select the ECM for the machine security system.
From the menu bar of the Cat ET service tool, select the following: "Service", "Copy Configuration", and then Fleet/Key Configuration from the submenu. If there is no recently loaded data available, the "No data is available..." message box displays. Click on the "Yes" button to load the data from the ECM. The "ECM Selector" dialog box is displayed. If necessary, highlight the Machine Security System ECM and Click on "OK". As the data is loading from the ECM, the "Please wait." message is displayed. Then, the "Loading data from ECM." progress bar is displayed. When the data has been successfully loaded from the ECM, the "The data has been successfully loaded." message is displayed. Click on "OK". The "Fleet/Key Configuration" screen displays with the "Program ECM" and "Save to File" push buttons are enabled.
Note: The data must be saved to a file before you disconnect from the service tool or the data will be lost.
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Fleet Configuration Screen
Click on the "Save to File" push button. The "Print New Document to File" dialog box is displayed. If you do not have a file open, a dialog box will ask you to choose one of the following options: open a file, create a file and cancel. Choose the "New" button to continue. Enter a document name and description in the appropriate text boxes. Click on "OK". The "Fleet/Key Configuration saved successfully" message box should display. Click on "OK". You will return to the "Fleet Configuration" screen. Record the saved file name in the space provide below as the file will be used in Step 14.
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Table 1
Filename
Select the "Machine Security System Uninstall" option from the "Service" menu. This option will cause the Cat ET service tool to display the message that is shown in Illustration 2.
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Click on the "Uninstall" button that is located at the lower left-hand corner of the "Machine Security System Uninstall" screen. This action will cause the Cat ET to display the message that is shown in Illustration 3.
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Click on the "Yes" button if you want to proceed with the "uninstall" of the Machine Security System.
Note: Pressing the "No" button aborts the "uninstall" of the Machine Security System.
Turn the keyswitch and disconnect switch to the "OFF" position. If the machine does not have a disconnect switch, remove the ground cable from the battery.
Remove and retain the tagged master keys from the new ECM. Replace the original MSS3s ECM with the new ECM supplied in the kit.
Turn the disconnect switch to the "ON" position or reattach the ground cable to the battery. Using one of the two new MASTER keys, turn the keyswitch to the "ON" position. Verify the status LED is green. If necessary, re-establish communication between the service tool and the MSS3s ECM.
Select "Copy Configuration" from the "Service" menu, and then select "Fleet/Key Configuration" from the submenu.
Open the document. As the data loads, a progress bar displays. Then, the "Fleet Configuration" message box displays.
Press "OK". The "Fleet/Key Configuration" screen displays with the file data.
Click on the "Program ECM" button. This action displays the fleet key information box.
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Illustration 4 g03866637

Append
Click on the "Append" button.
Note: Replacing the key list adds the current master access level key to key list. The additional master access level key supplied will not be added. Appending the list adds both master access level keys that came with the MSS3s ECM to the key list that copied to the MSS3s ECM.
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Click on the "Yes" button if you are prompted.
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Illustration 6 g03866642

ECM Selector dialog box

Note: MSS has a maximum of 255 keys that can be stored at one time. The replacement ECM has two master access level keys pre-programmed into the ECM. Fleet/Key Configuration determines the number of keys slots not programmed on the MSS. You cannot program more keys than the maximum number allowed. If more than 253 keys from the saved file, a message box displays informing you of the number of key slots available.
Perform the following steps:
1. On the main menu bar, select "Service"
2. Select "Configuration".
3. Enter the serial number of the machine in the "Product ID field".
4. To enter the "PID", highlight the" Product ID bar".
5. Enter the correct value by clicking the "Change" button in the lower left-hand corner of the screen. If this machine has one of the newer 17 character "PID's", use the last eight (8) characters.
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Illustration 7 g03863156
On the main menu bar, select "Service" and then "ECM Date/Time". Verify that correct date, time, and time zone are displayed for your location. Click on the "Change" button to adjust the settings.
Check the bypass times to ensure that the times are set correctly.
The ECM replacement procedure is now complete. You may choose to remove the two pre-installed master access level keys from the key list. To remove these keys, select "Service" and then "Security Management" from the menu bar. The list of keys will be displayed. In the "Description" field, located and highlight (one at a time) keys M1 and M2. Click on the "Delete" button. Confirm the "Are you sure." by clicking "OK".