CAT C3.4B Service Manual

Page 789

Systems Operation C3.4B Industrial Engine Media Number -UENR0620-02

Publication Date -01/03/2013

i06127161

Electronic Control System SMCS - 1900

Introduction The engine is designed for electronic control. The engine has an Electronic Control Module (ECM), a fuel injection pump and electronic unit injectors. All of these items are electronically controlled. There are also a number of engine sensors. The engine is equipped with an electronically controlled wastegate for the turbocharger. The ECM controls the engine operating parameters through the software within the ECM and the inputs from the various sensors. The software contains parameters that control the engine operation. The parameters include all of the operating maps and customer-selected parameters.

Illustration 1 Typical example

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