Part 2

2GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0455,P0456: Evaporative Emission Control System Leak Detected (Gross Leak)


Part 2

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS

P0455: EVAP gross leak

P0455: EVAP gross leak:

P0456: EVAP small leak

P0456: EVAP small leak:

MONITOR RESULT

Refer to CHECKING MONITOR STATUS Mode 6 Data.

CONFIRMATION DRIVING PATTERN





NOTICE:
- The Evaporative System Check (Automatic Mode) consists of 5 steps performed automatically by the Techstream. It takes a maximum of approximately 18 minutes.
- Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
- Do not run the engine during this operation.
- When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the fuel temperature below 35°C (95°F).
* Connect the Techstream to the DLC3.

* Turn the ignition switch to ON and turn the Techstream on.

* Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) DTC Check / Clear.

* Turn the ignition switch off and wait for 30 seconds.

* Turn the ignition switch to ON and turn the Techstream on.

* Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode [A].

* After the Evaporative System Check is completed, check for All Readiness by entering the following menus: Powertrain / Engine / Trouble Codes / Pending.

* Read the pending DTC [B].

* If a pending DTC is output, the system is malfunctioning.

HINT
If a pending DTC is not output, perform the following procedure.

* Enter the following menus: Powertrain / Engine / Utility / All Readiness.

* Input the DTC: P0455 or P0456.

* Check the DTC judgment result.





HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows INCOMPLETE or UNKNOWN, perform step [A] again.
* Enter the following menus: Powertrain / Engine / Utility / All Readiness.

* Check the judgment result.

HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.
* If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs DTC Check / Clear.

HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.