Exhaust Gas Recirculation: Description and Operation

Engine Emission Control

Exhaust Gas Recirculation (EGR)

EGR Component Location





The EGR (exhaust gas recirculation) system is controlled by a PWM signal from the ECM (engine control module). The system comprises an EGR (exhaust gas recirculation) valve and a gas transfer pipe.





The EGR (exhaust gas recirculation) valve is a 4 pole 60 point stepper motor with an integral cooler unit which is mounted on the side of the induction elbow. The EGR (exhaust gas recirculation) valve receive four 12 Volt signals from the ECM (engine control module). The EGR (exhaust gas recirculation) valve is cooled by the return coolant flow from the electric throttle.

The EGR (exhaust gas recirculation) valve is connected to the LH exhaust manifold via the gas transfer pipe.