Exhaust Gas Recirculation: Locations

Fig. 4 Emission Components And Vacuum Hose Routing:

EGR Valve: Rear, RH side of engine
Check Valve: In vacuum hose between the EGR valve and TVSV
Thermal Vacuum Switching Valve (TVSV): Front, RH side of intake manifold
Vacuum Modulator: Rear, RH side of engine