Emission Control Systems: Testing and Inspection

FA20 EMISSION CONTROL: EMISSION CONTROL SYSTEM: ON-VEHICLE INSPECTION; 2013 MY FR-S [03/2012 -]

1. CHECK PURGE VALVE

(a) Disconnect the No. 2 fuel vapor feed hose (on the canister side) of the fuel pipe.









(b) Connect the Techstream to the DLC3.

(c) Start the engine.

(d) Turn the Techstream on.

(e) Enter the following menus: Engine / Active Test / Activate the VSV for Evap Control.

(f) When the purge valve is operated using the tester, check whether the port of the purge valve applies suction to your finger.

OK:





If the result is not as specified, check the valve Testing and Inspection, wire harness and ECM.

(g) Connect the No. 2 fuel vapor feed hose (on the canister side) of the purge valve.

2. INSPECT FUEL CUT-OFF RPM

(a) Start and warm up the engine.

(b) Use a sound scope to check for injector operation noise.

(c) Increase the engine speed to at least 3000 rpm.

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

Standard:





If the result is not as specified, check the injector Fuel Injector (For Port Injection), wire harness and ECM.

3. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS EMISSION HOSE

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





NOTICE:
* Detachment or other problems with the engine oil dipstick, filler cap, ventilation hose and other components may cause the engine to run improperly.
* Air suction caused by disconnections, looseness or cracks in the parts of the air induction system between the throttle with motor body assembly and cylinder head will cause engine failure or engine malfunctions.

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

4. CHECK HOSES AND CONNECTORS

(a) Visually check for loose connections, sharp bends or damage.