EGR Vacuum Check

1. Check the EGR control system and EGR valve with the engine fully warmed up and running [engine coolant temperature over 76°C (170°F)]
2. With the transaxle in neutral and the throttle closed, allow the engine to idle for 70 seconds.
3. Abruptly accelerate the engine to approximately 2000 r/min, but not over 3000 r/min.
4. The EGR valve stem should move when accelerating the engine. Repeat the test several times to confirm movement.
5. If the EGR valve stem moves, the control system is operating normally.