Electronic Control Module (ECM)
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| Illustration 1 | g01457123 |
There are two terminal boxes on the G3520B engine. (1) Terminal box for the master ECM (2) Terminal box for the slave ECM | |
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| Illustration 2 | g01089866 |
ECM in a terminal box for industrial application | |
The master Electronic Control Module (ECM) controls most of the engine's functions. The module is an environmentally sealed unit that is in an engine mounted terminal box. The ECM monitors various inputs from sensors in order to activate relays, solenoids, etc at the appropriate levels. The master ECM supports the following primary functions:
- Start/stop control
- Control of ignition for the left bank
- Governing of the engine
- Air/fuel ratio control
- Monitoring of the detonation sensors on the left bank
- Monitoring of the electrical system
- Monitoring of engine operation
The slave ECM supports the following functions:
- Control of ignition for the right bank
- Monitoring of the detonation sensors on the right bank
Neither ECM has a removable personality module. The software is changed by the flash programming of a file via the Caterpillar Electronic Technician (ET).
Caterpillar Information System:
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