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TUBE 0002840 - Caterpillar



0002840 TUBE Caterpillar parts TUBE
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Alternative (cross code) number:
CA0002840
000-2840
0002840
Caterpillar 0002840 TUBE

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Caterpillar Electronic Key
Illustration 1 g00793955
The Caterpillar Electronic Key
The electronic key has the same key cut as the universal Caterpillar key. The electronic key has an electronic chip that is embedded inside the head of the key. The electronic keys are gray or yellow.Exciter Coil
The exciter coil provides communication between the electronic key and the key reader module.The exciter coil is mounted around the keyswitch. This position allows the exciter coil to communicate with the electronic key. Any ferrous metal between the coil and the electronic key will interfere with the communications. Mounting the coil in the same plane as the top of the key start switch will minimize the interference.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 exciter coil is connected to the harness via a 2-pin connector and a length of wire.Electronic Key Reader
Illustration 2 g01007352When the key start switch is placed in the ON position, the ECM will send a signal over the CAN data link that will command the key reader to excite the coil. The key ID from an electronic key is sent back to the requesting ECM over the CAN data link.Note: The key reader is NOT designed to communicate with the Caterpillar Electronic Technician (ET).Status Indicator
Illustration 3 g00862013The state of the MSS is displayed by the status indicator. The green LED of the status indicator turns ON when the system is disarmed. The machine should start. The red LED of the status indicator turns ON when the system is armed and an invalid electronic key has been read by the MSS. The machine should not start. The green LED and the red LED will remain OFF when the machine security system is not installed.


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