Machine Security System (MSS3i) Integrated Caterpillar

To uninstall the MSS from the machine, the engine ECM and transmission ECM must be uninstalled separate.

You will need to obtain a factory password to perform this procedure. A master electronic key will not allow the user to uninstall the Machine Security System (MSS). Refer to the Systems Operation Testing and Adjusting, "Factory Password - Obtain" in this manual for instructions on obtaining a factory password.

One factory password is required to uninstall MSS premium software from the ECM that the software is integrated with.

Note: An alternative to uninstalling the MSS software is to use a master key to bypass the security system. Refer to Systems Operation Testing and Adjusting, "Scheduled Access - Program" in this manual.

Engine ECM

1. Connect a laptop computer with Cat ^® Electronic Technician (Cat ET) to the machine via the communication adapter.

2. Place a key in the key start switch.

3. Turn the key to the "ON" position.

4. Start Electronic Technician and establish communications with the machine.

5. Select the Engine ECM from the ECM Summary page in Cat ET.
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   MSS Uninstall

6. Select "Machine Security System Uninstall" from the Service menu.
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   Uninstall Screen

7. Select the "Uninstall" button at the bottom of the page. This button will launch the "Uninstall Confirmation" dialog box.
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   Uninstall Confirmation

8. Select "Yes" to continue.
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   Factory password entry

9. Enter Factory Password #1 and Factory Password #2. Then, click the "OK" button
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   Immobilizer status

10. Click the "OK" button on the Immobilizer Status dialog box.
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11. The engine immobilizer is now uninstalled. Proceed to the following section to complete the uninstall process.

Transmission ECM

On older machines, all Immobilizer software must be uninstalled before proceeding with the followings steps.

On newer machines, when you uninstall the Machine Security System via the Configuration screen, all the Immobilizer software in other ECM's will be automatically uninstalled.

1. Select the Transmission ECM from the ECM Summary screen in ET.
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   MSS Install

2. Select "Service" from the toolbar on the Cat ET window. This selection will bring up the configuration screen. Select "Machine Security System Install" Do not select the Uninstall option.

3. Double-click "Advanced Machine Security Installation Status".
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   Change Parameter Value

4. Selecting "Advanced Machine Security Installation Status" will launch the Change Parameter Value window.

5. Click the drop-down and select "Not Installed".

6. Click "OK".

   A prompt will appear asking if you are sure that you want to program this parameter? Select "Yes".

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   MSS Status Verification

7. Verify that this parameter has uninstalled correctly. Check that the status indicates "Not Installed" in ET. The MSS system should now be fully uninstalled and have no lockout implications.