Emission Control Systems: Testing and Inspection

1GR-FE EMISSION CONTROL: EMISSION CONTROL SYSTEM: ON-VEHICLE INSPECTION

1. CHECK PURGE VSV

(a) Connect the Techstream to the DLC3.

(b) Remove the V-bank cover Removal.





(c) Disconnect the hose (connected to the canister) from the purge VSV.

(d) Start the engine and turn the Techstream main switch on.

(e) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control.

OK:





(f) Connect the hose (connected to the canister) to the purge VSV.

(g) Install the V-bank cover Installation.

2. INSPECT FUEL CUT-OFF RPM

(a) Start and warm up the engine.

(b) Open the throttle valve and keep the engine speed at 3000 rpm.

(c) Use a sound scope to check for injector operating noise.

(d) Check that when the accelerator pedal is released, injector operation noise stops momentarily and then resumes.

If the result is as not specified, check the injector, wiring and ECM.

3. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS

(a) Check that there are no cracks, leaks or damage.

NOTICE:
* Detachment or other problems with the engine oil dipstick, filler cap, PCV hose and other components may cause the engine to run improperly.
* Disconnection, looseness or cracks in the parts of the air induction system between the throttle body and cylinder head will allow air suction and cause an engine failure or engine failure malfunctions.

If the result is not as specified, replace parts as necessary.

4. INSPECT FUEL CUT-OFF VALVE AND FILL CHECK VALVE

(a) Disconnect the vent line hose from the charcoal canister.





Text in Illustration





(b) Connect a pressure gauge to the vent line hose.

(c) Fill the fuel tank with fuel.

(d) Apply a pressure of 4 kPa (0.04 kgf/cm2, 0.6 psi) to the vent port of the fuel tank.

HINT
If the fuel tank is full, it is necessary to check the fuel amount, as the float valve of the fill check valve is closed and there is no ventilation.

(e) Remove the fuel tank cap, and check that the pressure inside the tank drops.

If the pressure does not drop, replace the fuel tank assembly.

(f) Reconnect the vent line hose to the charcoal canister.

5. CHECK AIR INLET LINE

(a) Disconnect the air inlet line hose from the charcoal canister.





(b) Check that there is ventilation in the air inlet line.

HINT
If air cannot flow freely into the air inlet line, repair or replace it.

(c) Reconnect the air inlet line hose to the charcoal canister.