The EGR valve controls the flow of exhaust gases into the inlet and EGR mixer duct.
The EGR drive module controls the EGR actuator.
The EGR drive module receives the desired EGR actuator position from the ECM across the CAN
2 datalink to activate the valve for exhaust gas recirculation.
The EGR drive module provides feedback to the ECM on the valve position.
The EGR drive module constantly monitors the EGR actuator. When an EGR control error is detected, the
EGR drive module sends a message to the ECM and a DTC is set.
