Egr Valve On-Vehicle Inspection

Using a 3-way connector, connect a vacuum gauge to the hose between the electric EGR control valve and E-VRV.

Check the seating of the electric EGR control valve.

1. Start the engine. Check that the engine starts and then idles.
   

Check the output vacuum with a vacuum gauge.

1. Connect a vacuum gauge to the output pipe of the electric EGR control valve.
   

2. Warm up the engine and check that the vacuum gauge reading is above 28 kPa (210 mmHg, 8.23 in.Hg).
   If the result is not as specified, check for leaks between the electric EGR control valve and vacuum pump, or check the electric EGR control valve.
   

Check "hot" engine condition.

1. Visually check the vacuum hose between the vacuum pump and electric EGR control valve for leaks.
   

2. Warm up the engine.
   

   HINT:

   The coolant temperature should be between 75°C (167°F) and 90°C (194°F).

3. Check that the vacuum gauge indicator reading increases by more than 28 kPa (210 mmHg, 8.23 in.Hg) at 1500 rpm.
   

4. When the accelerator pedal is fully depressed quickly, check that the vacuum gauge indicator reading drops momentarily.
   

5. Keep the engine speed at more than 4000 rpm.
   

6. Check that the vacuum gauge reading is as specified.
   

   Standard condition:

   3.6 kPa (27 mmHg, 1.06 in.Hg)
   

7. When the accelerator pedal is released, check that the vacuum gauge indicator reading drops momentarily while the engine speed decreases from more than 4000 rpm to idle.
   If the result is not as specified, refer to the inspection section (Toyota Fortuner RM000002RK700ZX.html).
   

Remove the vacuum gauge and connect the vacuum hose to the electric EGR control valve.