HARNESS AS-SENSOR 3843978 - Caterpillar

Illustration 1 g06065503
Machine security system (MSS3s)
(1) SAE J1939
(2) Caterpillar Data Link
(3) Machine Security System Standalone ECM (MSS3s)
( 4) MSS Status Indicator
(5) MSS Software
(6) Keyswitch
(7) Exciter Coil
(8) MSS Electronic Key
(9) Battery 12V or 24V
(10) Relay
(11) Starter
(12) Immobilizer Software
(13) Critical System (Transmission ECM)
( 14) Critical System (Engine ECM)
( 15) Communications Adapter
(16) PC Caterpillar Service Tool (ET or PSPS)The MSS3s ECM for the machine security system is a hardened computer that is designed specifically for the MSS.The Cat ® electronic key for the MSS contains an electronic chip that is embedded in the head of the key. This chip in the head of the key contains a unique identification number. The Cat ® electronic key uses the same key cut as the standard Cat ® key. The electronic key can be used to operate any machine that uses the current Cat ® keyswitch. The Cat ® electronic key comes in a gray color or a yellow color. Cat ® electronic keys are not configurable.The exciter coil of the MSS is a ring shaped device. The exciter coil is mounted around the existing Cat ® keyswitch. The exciter coil is used to read the ID that is contained in the Cat ® electronic key.Note: Ensure that you have only one electronic key near the exciter coil when the MSS reads the key. If more than one electronic key is near the exciter coil, the MSS3s ECM will not read the key and the machine will not start.The status indicator for the MSS is mounted in the dash of the machine near the keyswitch. The status indicator will give basic information about the MSS to the operator of the machine. The status indicator has two colors: red and green.