Exhaust Gas Recirculation System Check

1. Disconnect the vacuum hose (green stripe) from the EGR solenoid, and then connect a hand vacuum pump via the three-way terminal.
2. Regarding the engine in cold and hot conditions, check the condition of vacuum when a rapid racing has been performed by opening the throttle valve quickly.





When engine is cold
Engine coolant temperature: 2O° C (68° F) or less





When engine is hot
Engine coolant temperature: 80°C (176°F) or higher

3. Disconnect the three-way terminal.
4. Connect the hand vacuum pump directly to the EGR valve.
5. Check whether the engine stalls or if the idle is unstable when a vacuum of 27 kPa (7.9 in.Hg) or higher is applied while idling.