ECM SYSTEM COMPONENT ECM (ELECTRONIC CONTROL MODULE) 1. The ECM (Electronic Control Module) is the control center of the system. It processes all of the inputs and sends commands fuel system, vehicle and engine control devices. 2. The ECM performs diagnostic tests on most of its circuit and will activate a fault code if a problem is detected in one of these circuits. Along with the fault code identifying the problem, a snapshot of engine operating parameters at the time of fault activation is also stored in memory. AWS0520L Figure 17 ALTERNATE (SWITCHABLE) TORQUE SWITCH The alternate torque switch provides the ability to select up to additional derated torque curves.
This alternate torque feature allows the operator to switch between 100% throttle torque curves and up to derated torque curve (80%) and improves operating efficiency in loaded versus unloaded conditions. ECM 100% O Torque 02 80% I Engine Speed AWS0530L Figure 18 S0802195K Page 34 Electrical System