Electronic Control Module (ECM)
There are two possible configurations for the control system. Refer to Illustrations 1 and 2.
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| Illustration 1 | g01301888 |
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Rear view (1) ECM | |
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| Illustration 2 | g01302192 |
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Rear view (1) ECM (2) Auxiliary Sensing Module (ASM) | |
One ECM is installed on the engine. ECM (1) controls the engine's functions. Auxiliary Sensing Module (ASM) (2) is optional.
Both modules are environmentally sealed units that are 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 ECM supports the following primary functions:
- Start/stop control
- Control of ignition
- Governing of the engine
- Air/fuel ratio control
- Monitoring of the detonation sensors
- Diagnostics of the electrical system
- Monitoring and protection of engine operation
Auxiliary Sensing Module (ASM) (2) improves the genset's ability to maintain a consistent level of frequency and voltage.
The modules do not have a removable personality module. The software is changed by programming a flash file into the module via the Caterpillar Electronic Technician (Cat ET).
Caterpillar Information System:
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