P0441
FA20 ENGINE CONTROL: SFI SYSTEM: P0441; Evaporative Emission Control System Incorrect Purge Flow; 2013 MY FR-S [03/2012 -]
P0441 - Evaporative Emission Control System Incorrect Purge Flow
DTC SUMMARY
DESCRIPTION
The description can be found in EVAP (Evaporative Emission) System EVAP System.
MONITOR DESCRIPTION
The purge flow monitor runs while the engine is running. The purge flow monitor consists of 2 monitors. The 1st monitor is conducted every time and the 2nd monitor is activated if necessary.
* The 1st monitor
While the engine is running and the purge valve is on (open), the ECM monitors the purge flow by measuring the EVAP pressure change. If the variation in the pressure is less than threshold, the ECM begins the 2nd monitor.
* The 2nd monitor
The vent valve is turned on (closed) and the EVAP pressure is then measured. If the variation in the pressure is more than threshold, the ECM interprets this as the purge valve being stuck closed, and illuminates the MIL and stores DTC P0441 (2 trip detection logic).
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
All
1st Stage
2nd Stage
TYPICAL MALFUNCTION THRESHOLDS
1st Stage
2nd Stage
MONITOR RESULT
Refer to Checking Monitor Status Mode 6 Data.
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC procedure) Reading and Clearing Diagnostic Trouble Codes.
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on.
6. Start the engine.
7. Drive the vehicle at 60 km/h (40 mph) or more for 10 minute or more [A].
NOTICE:
When performing the confirmation driving pattern, Obey all speed limits and traffic laws.
8. Enter the following menus: Powertrain / Engine / Trouble Codes.
9. Read pending DTCs.
HINT
* If a pending DTC is output, the system is malfunctioning.
* If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine / Utility / All readiness.
11. Input the DTC: P0441.
12. Check the DTC judgment result.
HINT
* If the judgment result shows NORMAL, the system is normal.
* If the judgment result shows ABNORMAL, the system has a malfunction.
* If the judgment result shows INCOMPLETE or N/A, perform the following procedure.
NOTICE:
* The Evaporative System Check (Automatic Mode) consists of 5 steps performed automatically by the Techstream. It takes a maximum of approximately 24 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 higher, 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) and the coolant temperature below 45°C (113°F).
13. Clear DTCs (even if no DTCs are stored, perform the clear DTC procedure) Reading and Clearing Diagnostic Trouble Codes.
14. Turn the ignition switch off and wait for at least 30 seconds.
15. Turn the ignition switch to ON and turn the Techstream on.
16. Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.
17. After the Evaporative System Check is completed, check for All Readiness by entering the following menus: Powertrain / Engine / Utility / All Readiness.
18. Input the DTC: P0441.
19. Check the DTC judgment result.
HINT
* If the judgment result shows NORMAL, the system is normal.
* If the judgment result shows ABNORMAL, the system has a malfunction.
20. If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT
* If a permanent DTC is output, the system is malfunctioning.
* If no permanent DTC is output, the system is normal.
INSPECTION PROCEDURE
PROCEDURE
1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL)
(a) Connect a Techstream to the DLC3.
(b) Disconnect the vacuum hose (canister side) from the purge valve.
(c) Start the engine.
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for EVAP Control.
(f) When the purge valve is operated using the Techstream, check whether the port of the purge valve applies suction to your finger.
OK:
NG -- REPLACE PURGE VALVE
OK -- Continue to next step.
2. INSPECT EVAP LEAK PART
(a) Check for leakage from EVAP system (hose, disconnection, cracks, etc.).
OK:
No leakages in the EVAP purge line
NG -- REPAIR OR REPLACE EVAP PURGE LINE
OK -- Continue to next step.
3. REPLACE PURGE VALVE
(a) Replace the purge valve Removal.
NEXT -- CHECK DTC OUTPUT (EVAP SYSTEM)
4. REPAIR OR REPLACE EVAP PURGE LINE
NEXT -- Continue to next step.
5. CHECK DTC OUTPUT (EVAP SYSTEM)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Enter the following menus: Powertrain / Engine / Trouble Codes.
Result
B -- END
A -- Continue to next step.
6. REPLACE ECM
(a) Replace the ECM Removal.
NEXT -- Continue to next step.
7. CHECK DTC OUTPUT (EVAP SYSTEM)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Enter the following menus: Powertrain / Engine / Trouble Codes.
HINT
If no pending DTCs are found, the repair has been successfully completed.
NEXT -- END