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SUPPORT GP- 4Z8526 - Caterpillar

4Z8526 SUPPORT GP- Caterpillar parts SUPPORT
Alternative (cross code) number:
Caterpillar 4Z8526 SUPPORT GP-
Weight: 666 pounds 302 kg.

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Illustration 1 g00785019
Electronic Control Module (ECM)
The Machine Security System (MSS) is an integrated feature for the machine ECM. The MSS software and components are integrated into an ECM that controls other machine functions. The system may utilize up to 255 electronic keys.Note: The system will be limited to 50 keys on older machines. This limitation is due to software limitations on the Machine ECM that utilizes a version of software that does not support the larger key storage.ECM Inputs
The key start switch is also used as an input signal to the MSS. The input from the key switch is used to determine when the machine is on. Battery voltage is connected to this input through the ON and START positions of the keyswitch. See Table 1 for input voltages.
Table 1
Input Voltage 12V System 24V System
Machine is operating and the alternator is charging. 14.1 - 15.1V 27.6 - 29.6V
Machine is not running. 12V 24V ECM Outputs
Status Indicator
The status indicator displays status of the system. The status indicator has three connections. One of the three connections is for a ground. Another connection is for the red LED. The third connection is for the green LED.

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