RACE & BEARING 6I8641 - Caterpillar

Illustration 1 g02281373
Rear view
(1) ECM
(2) Slave ECM Master ECM (1) controls most of the engine 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 control the engine. The 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
Diagnostics of the electrical system
Monitoring and protection of engine operationSlave ECM (2) supports the following functions:
Control of ignition for the right bank
Monitoring of the detonation sensors on the right bankThe 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).