PACKING 1K7114 - Caterpillar

The machine security system (MSS) is designed to restrict operation of a machine. A list of the authorized electronic keys for a machine is contained in the ECM for the MSS. Only a Caterpillar ® Electronic Key that is authorized can disarm the MSS. This disarming is accomplished by assigning the ID of an electronic key to the ECM for the MSS. The Caterpillar ® Electronic Technician (Cat ET) must be used to program the ECM with the authorized keys.When the electronic key is placed in the key switch and turned to the ON position, the key reader reads the unique ID. This ID is stored in the key. The ECM will then compare this ID to the list of authorized keys.The status indicator turns a green color when the MSS has read an authorized key.If the ID of the key matches an authorized key, the status indicator will turn a green color and the MSS will disarm. This disarming will allow the machine to operate.If the ID of the key that is read does not match the list in the ECM, the status indicator will become a red color. The MSS remains in the "armed" state and the machine will remain disabled.Note: Ensure that you have only one electronic key near the exciter coil when the MSS reads the key. If there is more than one key, the ECM will not be able to read the key and the machine will not start.The Machine Security System can be configured to work in a combination of ways depending on the electronic architecture of the machine.
Electronic ControlThe MSS may disable the machine by controlling the electronic devices that are used to power critical machine systems. This is done by communicating with other ECM"s that have Immobilizer installed on them.
ImmobilizerThe MSS disables the machine by communicating with other electronic control modules across the Cat data link (CDL) or CAN data link and disabling critical machine functions. Immobilizer obtains status from the MSS and acts accordingly. If the Security ID is not authenticated, the MSS ECM will communicate to the ECM"s with Immobilizer installed and tell them not to allow operation.To change the list of authorized keys or change the configuration parameters of the Machine Security System, the user must:
Have Cat ETand one of the following items:
A key with Master Access Level for that specific Machine Security System
A Factory PasswordWhen a key with the master access level is not available, a Factory Password is required to change certain parameters in the configuration.Refer to Testing and Adjusting, "Factory Password - Obtain" for additional information on Factory Passwords.The Electronic Technician screen for the Factory Level Security Password will display the following parameters:
ECM serial number
"Product ID"(Serial Number of the machine)
Serial Number of the Service Tool
Reason Code
Total Tattletale numberTo obtain the proper passwords, the information must be given to an authorized Caterpillar dealer.If a Master Access Level key for a machine being serviced is not available, a factory password must be entered before changes can