Egr Valve (W/O Glow Plug Controller) On-Vehicle Inspection

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
1Kd-Ftv Emission Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

  1. INSPECT ELECTRIC EGR CONTROL VALVE ASSEMBLY

  2. INSPECT NO. 2 EGR VALVE ASSEMBLY (w/ EGR Cooler)

Egr Valve (W/O Glow Plug Controller) -- On-Vehicle Inspection


NOTICE:
Always stop the engine when installing or removing vacuum gauges, or when removing the vacuum hoses.


1. INSPECT ELECTRIC EGR CONTROL VALVE ASSEMBLY


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Kd-Ftv Emission Control.Emission Control System.Egr Valve (W/O Glow Plug Controller) On-Vehicle Inspection

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

    Text in Illustration
    *A
    		w/ EGR Cooler
    *B
    		w/o EGR Cooler
    *1
    		Vacuum Gauge
    *2
    		3-way Connector

  1. Check the seating of the electric EGR control valve.

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

  1. 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, 8.27 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.

  1. 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, 8.27 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 (HILUX_TGN26 RM000002RK7014X.html).

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



2. INSPECT NO. 2 EGR VALVE ASSEMBLY (w/ EGR Cooler)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Kd-Ftv Emission Control.Emission Control System.Egr Valve (W/O Glow Plug Controller) On-Vehicle Inspection

  1. With the engine stopped, make sure the EGR cooler by-pass regulating link is in the Non-bypass Position as shown in the illustration.

    Text in Illustration
    *1
    		Non-bypass Position
    *2
    		Bypass Position

  1. Start the engine.

  1. After the engine idle condition is stable and the engine coolant temperature is less than 70°C (158°F), make sure the EGR cooler by-pass regulating link is in the Bypass Position shown in the illustration.

  1. When the engine coolant temperature is 75°C (167°F) or higher, make sure the EGR cooler by-pass valve actuating link is in the Non-bypass Position shown in the illustration.