On-Vehicle Inspection [09/2014 - 09/2020]: Procedure
- INSPECT FUEL CUT OPERATION
- Increase the engine speed to approximately 3000 RPM.
- Use a sound scope to check for injector operating sounds.
- When the accelerator pedal is released, check that injector operating sounds stop momentarily and then resume.
Standard
Item Specified Condition Fuel cut-off engine speed 2500 RPM or higher Fuel injection restart engine speed 1400 RPM If the result is not as specified, check the fuel injector assemblies, wire harness and ECM.
- VISUALLY CHECK HOSES, CONNECTIONS AND GASKETS
- Visually check that the hoses, connections and gaskets have no cracks, leaks or damage.NOTE:
- Detachment or other problems with the engine oil level dipstick, oil filler cap sub-assembly, ventilation hose or other components may cause the engine to run improperly.
- Air suction caused by disconnections, looseness or cracks in any part of the air induction system between the throttle body with motor assembly and cylinder head sub-assembly will cause engine failure or engine malfunctions.
If any defects are found, replace parts as necessary.
- Visually check that the hoses, connections and gaskets have no cracks, leaks or damage.
- INSPECT EVAPORATIVE EMISSION CONTROL SYSTEM
- Connect the Techstream to the DLC3.
- Slide the clip and disconnect the No. 1 fuel vapor feed hose from the purge valve (purge VSV).
- Start the engine.
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Evap Control.
Powertrain > Engine > Active Test
Tester Display Activate the VSV for Evap Control - Check that vacuum occurs at the purge valve (purge VSV) port.
- If vacuum does not occur, check the following items.
- Purge valve (purge VSV)
- Clogging in the No. 1 fuel vapor feed hose that connects the intake air surge tank assembly and purge valve (purge VSV)
- Voltage from the ECM PRG terminal
Refer to TERMINALS OF ECM [09/2014 - 11/2017] , or refer to TERMINALS OF ECM [11/2017 - 03/2019] , or refer to TERMINALS OF ECM [03/2019 - ]
- Exit Active Test mode, connect the No. 1 fuel vapor feed hose to the purge valve (purge VSV) and slide the clip to secure it.
- Enter the following menus: Powertrain / Engine / Data List / EVAP (Purge) VSV.
Powertrain > Engine > Data List
Tester Display EVAP (Purge) VSV - Warm up the engine and drive the vehicle.
- Confirm that the purge valve (purge VSV) opens.
If the result is not as specified, replace the purge valve (purge VSV), wire harness or ECM.
- CHECK FUEL TANK AND VENT LINE
- Disconnect the vent line hose from the canister (charcoal canister assembly).
- Connect a pressure gauge to the vent line hose.
*1 Fuel Tank Cap Assembly *2 Vent Line Hose *a Pressure Gauge - - - Apply 4 kPa (0.04 kgf/cm2
, 0.6 psi) of pressure to the vent line of the fuel tank assembly.
HINT:
Perform this inspection with the fuel tank assembly less than 90% full. When the fuel tank assembly is full, the fuel fill check valve closes and the pressure is released through the 2 mm orifice. As a result, when the fuel tank cap assembly is removed, the pressure does not decrease smoothly.
- Check that the fuel tank assembly pressure is maintained for some time and does not decrease immediately.
HINT:
If the pressure decreases immediately, one of the following may apply:
- The fuel tank cap assembly is not completely tightened.
- The fuel tank cap assembly is damaged.
- Air is leaking from the vent line.
- The fuel tank assembly is damaged.
- Remove the fuel tank cap assembly, check that the pressure is released smoothly.
If the pressure is not released smoothly, replace the fuel tank assembly.
- Connect the vent line hose to the canister (charcoal canister assembly).
- INSPECT AIR LINE