ARIA

ENGINE 186 7. Remove the spring band clamp (2) and discon- nect the hose (1) connecting EGR coolant outlet to the coolant return line. 8. Loosen and remove the hex flange bolts (2) to disconnect the EGR pipe (1) from EGR cooler. 9. Loosen and remove the hex flange bolts to dis- connect the EGR cooler module (1) mounted on the intake manifold. FITMENT For fitment follow reverse procedure of removal. NOTE Use new gasket every time and tighten bolts to spec- ified torque. 17. EGR COOLER BYPASS VALVE (VACUUM SOLENOID VALVE): The EGR Cooler Bypass valve is an electro pneu- matic solenoid switch, which is controlled precisely by the EMS ECU based on the Engine speed, Cool- ant Temperature and Accelerator pedal position etc. Vacuum solenoid valve provides variable vacuum levels to drive EGR. LOCATION REMOVAL 1. Remove engine cover. 2. Disconnect all the hose connections & electrical connection from the Vacuum solenoid valve. 3. Remove the mounting bolts of vacuum solenoid valve & take out the vacuum solenoid valve from its location. REFITMENT 1. Fit the Vacuum solenoid valve on the mounting bracket. 2. Tighten its two mounting bolts.