California

1. Disconnect the vacuum hose (green stripe) from the EGR valve body, and connect a vacuum pump via the three way terminal.
2. Check the following points when the engine is both cold [engine coolant temperature 20°C (68°F) or below] and hot [engine coolant temperature 70°C (158°F) or higher].





WHEN THE ENGINE IS COLD





WHEN THE ENGINE IS WARM





3. Disconnect the three-way terminal and connect the hand vacuum pump directly to the Exhaust Gas Recirculation (EGR) valve.
4. Check whether the engine stalls or the idling is unstable when a vacuum of 26 kPa (7.5 in.Hg) or higher is applied during idling.