EGR Control (Esteem, Grand Vitara & Vitara)

EGR valve is controlled by ECM/PCM using a stepper motor attached to EGR valve. ECM/PCM uses signals from Camshaft Position (CMP) sensor, Engine Coolant Temperature (ECT) sensor, Mass Airflow (MAF) sensor and Vehicle Speed Sensor (VSS) to determine control of stepper motor.