M20F-FXS, M20G-FXS ENGINE CONTROL  SFI SYSTEM  P04417E  Evaporative Emission System Incorrect Purge Flow Actuator Stuck On  P04417F  Evaporative Emission System Incorrect Purge Flow Actuator Stuck Off  P04419C  Evaporative Emission System Incorrect Purge Flow Low/Insufficient Flow  

Refer to EVAP (Evaporative Emission) System.

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The 2 monitors, Key-off and Purge Flow, are used to detect malfunctions relating to DTCs P04417E, P04417F and P04419C. The key-off monitor is initiated by the ECM internal timer, known as the soak timer, 5 hours* after the ignition switch is turned off. The purge flow monitor runs while the engine is running.

HINT:

*: If the engine coolant temperature is not less than 35°C (95°F) 5 hours after the ignition switch is turned off, the monitor check starts 2 hours later. If it is still not less than 35°C (95°F) 7 hours after the ignition switch is turned off, the monitor check starts 2.5 hours later.

1.

KEY-OFF MONITOR

(a)

Purge VSV stuck open

In operation C, the leak detection pump creates negative pressure (vacuum) in the EVAP system. The EVAP system pressure is then measured by the ECM using the canister pressure sensor. If the stabilized system pressure is higher than [second reference pressure x 0.2], the ECM interprets this as the purge VSV (Vacuum Switching Valve) being stuck open. The ECM illuminates the MIL and stores the DTC (2 trip detection logic).

(b)

Purge VSV stuck closed

During sequence D, the canister pressure sensor measures the EVAP system pressure. The pressure measurement for purge VSV monitor is begun when the purge VSV is turned on (open) after the EVAP leak check. When the measured pressure indicates an increase of 0.3 kPa [0.04 psi] or higher, the purge VSV is functioning normally. If the pressure does not increase, the ECM interprets this as the purge VSV being stuck closed. The ECM illuminates the MIL and stores the DTC (2 trip detection logic).

0.146,0.083 1.375,0.281 1.229,0.198 10 false Method A 0.031,1.302 1.375,1.802 1.344,0.5 10 false Vent Valve (Switching Valve) 0.031,2.021 1.375,2.521 1.344,0.5 10 false Leak Detection Pump 0.635,3.021 1.979,3.521 1.344,0.5 10 false Purge VSV 0.177,3.708 1.333,4.323 1.156,0.615 10 false Fuel Vapor-containment Valve 0.135,4.479 1.625,4.75 1.49,0.271 10 false Fuel Tank Pressure 0.323,5.302 1.813,5.573 1.49,0.271 10 false EVAP Pressure 1.167,5.708 1.531,6.063 0.365,0.354 10 false *1 0.635,6.615 2.125,6.885 1.49,0.271 10 false Sequence 0.927,6.958 1.313,7.188 0.385,0.229 10 false Time 3.292,7.521 4.969,7.844 1.677,0.323 10 false 10 seconds 1.167,7.25 2.104,7.5 0.938,0.25 10 false 60 seconds 1.729,7.531 2.667,7.833 0.938,0.302 10 false 360 seconds 2.427,7.25 3.635,7.583 1.208,0.333 10 false Within 15 minutes 3.76,7.25 4.583,7.594 0.823,0.344 10 false 60 seconds 4.188,7.521 5,7.833 0.813,0.313 10 false 5 seconds 4.729,7.25 5.667,7.5 0.938,0.25 10 false 0.1 seconds 1.542,6.5 1.771,6.771 0.229,0.271 10 false A 2.063,6.5 2.25,6.75 0.188,0.25 10 false B 2.885,6.5 3.188,6.833 0.302,0.333 10 false C 3.594,6.5 3.854,6.75 0.26,0.25 10 false D 4.083,6.5 4.333,6.833 0.25,0.333 10 false E 4.51,6.5 4.833,6.917 0.323,0.417 10 false F 4.979,6.5 5.25,6.75 0.271,0.25 10 false I 3.198,5.552 3.802,5.865 0.604,0.313 10 false OK 5.313,5.115 5.948,5.615 0.635,0.5 10 false *2 5.594,5.344 7.135,5.792 1.542,0.448 10 false Atmospheric Pressure 5.531,4.458 7.073,4.906 1.542,0.448 10 false Atmospheric Pressure 1.521,4.896 3.104,5.271 1.583,0.375 10 true Malfunction (Stuck Open) 4.052,4.854 5.74,5.135 1.688,0.281 10 true Malfunction (Stuck Closed) 1.885,8.156 2.521,8.656 0.635,0.5 10 false : OK 2.771,8.167 4.302,8.583 1.531,0.417 10 false : Malfunction 2.792,3.885 3.99,4.229 1.198,0.344 10 true Fuel Tank Pressure 4.083,3.25 4.729,3.583 0.646,0.333 10 true ON: Open 4.896,3.76 5.781,4.021 0.885,0.26 10 false ON 3.531,2.99 4.417,3.25 0.885,0.26 10 false ON 4.031,2.458 4.667,2.813 0.635,0.354 10 true ON: Open 4.385,1.583 5.063,1.906 0.677,0.323 10 true OFF: Vent 4.094,0.781 5.01,0.99 0.917,0.208 10 true ON: Close 2.76,1.302 3.646,1.563 0.885,0.26 10 false ON 2.781,2.042 3.667,2.302 0.885,0.26 10 false ON 4.552,8.115 6.594,8.458 2.042,0.344 10 false *1: First Reference Pressure 4.552,8.438 7.042,8.698 2.49,0.26 10 false *2: (Second Reference Pressure) x 0.2

0.292,0.25 1.521,0.448 1.229,0.198 10 false Method B 0.083,1.417 1.146,1.865 1.063,0.448 10 false Vent Valve (Switching Valve) 0.188,2.26 1.135,2.75 0.948,0.49 10 false Leak Detection Pump 0.448,3.073 1.396,3.563 0.948,0.49 10 false Purge VSV 0.375,3.75 1.135,4.313 0.76,0.563 10 false Fuel Vapor-containment Valve 0.49,4.583 1.104,5.052 0.615,0.469 10 false Fuel Tank Pressure 0.198,5.375 1.302,5.802 1.104,0.427 10 false EVAP Pressure 0.958,5.823 1.188,6.104 0.229,0.281 10 false *1 0.531,6.26 1.458,6.594 0.927,0.333 10 false Sequence 0.823,6.76 1.75,7.094 0.927,0.333 10 false Time 3.188,7.406 4.115,7.74 0.927,0.333 10 false 10 seconds 1.646,7.417 2.573,7.75 0.927,0.333 10 false 360 seconds 1.104,7.115 2.031,7.448 0.927,0.333 10 false 60 seconds 2.271,7.125 3.458,7.344 1.188,0.219 10 false Within 15 minutes 3.698,7.094 4.625,7.427 0.927,0.333 10 false 60 seconds 4.219,7.385 5.146,7.719 0.927,0.333 10 false 5 seconds 4.625,7.125 5.813,7.344 1.188,0.219 10 false Within 15 minutes 5.781,7.396 6.708,7.729 0.927,0.333 10 false 60 seconds 4.719,5.896 4.948,6.177 0.229,0.281 10 false *2 3.052,5.667 3.281,5.948 0.229,0.281 10 false OK 1.375,6.333 1.604,6.615 0.229,0.281 10 false A 1.917,6.333 2.146,6.615 0.229,0.281 10 false B 2.74,6.344 2.969,6.625 0.229,0.281 10 false C 3.458,6.333 3.688,6.615 0.229,0.281 10 false D 3.99,6.333 4.219,6.615 0.229,0.281 10 false E 4.417,6.333 4.646,6.615 0.229,0.281 10 false F 5.042,6.333 5.271,6.615 0.229,0.281 10 false G 6.031,6.333 6.26,6.615 0.229,0.281 10 false H 1.344,4.875 2.917,5.229 1.573,0.354 10 true Malfunction (Stuck Open) 2.073,4.177 3.76,4.51 1.688,0.333 10 true Malfunction (Stuck Closed) 5.302,4.219 6.688,4.573 1.385,0.354 10 true Atmospheric Pressure 5.198,3.26 5.823,3.583 0.625,0.323 10 true ON: Open 3.885,2.656 4.51,2.979 0.625,0.323 10 true ON: Open 3.417,3.052 3.781,3.375 0.365,0.323 10 false ON 5.052,3.771 5.417,4.094 0.365,0.323 10 false ON 5.042,2.25 5.406,2.573 0.365,0.323 10 false ON 5.052,1.427 5.417,1.75 0.365,0.323 10 false ON 4.844,1.833 5.698,2.083 0.854,0.25 10 false OFF: Vent 5.24,0.958 6.229,1.188 0.99,0.229 10 true ON: Close 2.688,1.438 3.052,1.76 0.365,0.323 10 false ON 2.688,2.26 3.052,2.583 0.365,0.323 10 false ON 1.677,8.052 2.042,8.281 0.365,0.229 10 false : OK 2.604,8.031 3.969,8.26 1.365,0.229 10 false : Malfunction 4.365,7.979 6.49,8.292 2.125,0.313 10 false *1: First Reference Pressure 4.385,8.354 6.969,8.667 2.583,0.313 10 false *2: (Second Reference Pressure) x 0.2

2.

PURGE FLOW MONITOR

The purge flow monitor consists of 2 monitors. The 1st monitor is conducted every time and the 2nd monitor is activated if necessary.

0.083,0.063 2.833,0.302 2.75,0.24 10 false EVAP Pressure During Purge Flow Monitor: 2.031,0.708 2.833,0.917 0.802,0.208 10 false Purge VSV 2.063,1.063 2.833,1.25 0.771,0.188 10 false Vent Valve 1.75,1.427 2.833,1.667 1.083,0.24 10 false EVAP Pressure 3.583,0.646 4,0.833 0.417,0.188 10 false Open 3.625,1.021 4.5,1.25 0.875,0.229 10 false ON (Closed) 4.427,1.271 5.26,1.469 0.833,0.198 10 false Malfunction 4.427,1.594 6.833,1.833 2.406,0.24 10 false 0.1 kPa [0.01 psi] 4.427,1.969 6.938,2.177 2.51,0.208 10 false 0.396 kPa [0.0574 psi] 2.802,2.417 3.594,2.625 0.792,0.208 10 false 1st Monitor 3.229,1.781 3.5,2 0.271,0.219 10 false OK 4.125,2.146 4.417,2.333 0.292,0.188 10 false OK 3.635,2.417 4.427,2.625 0.792,0.208 10 false 2nd Monitor

Atmospheric pressure check:

In order to ensure reliable malfunction detection, the variation in atmospheric pressure, before and after performing the purge flow monitor, is measured by the ECM.

NOTICE:

·

The Evaporative System Check (Automatic Mode) consists of 9 steps performed automatically by the GTS. It takes a maximum of approximately 40 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 start the engine during this operation.

·

When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor will from and any check result will be inaccurate. When performing the Evaporative System Check, keep the fuel temperature less than 35°C (95°F).

HINT:

·

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

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·

When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

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P04417E and P04417F

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

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

5.

Turn the ignition switch off and wait for at least 30 seconds.

6.

Turn the ignition switch to ON [A].

7.

Turn the GTS on.

8.

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

9.

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

10.

Input the DTC: P04417E or P04417F.

11.

Check the DTC judgment result.

GTS Display	Description
NORMAL	· DTC judgment completed · System normal
ABNORMAL	· DTC judgment completed · System abnormal
INCOMPLETE	· DTC judgment not completed · Perform driving pattern after confirming DTC enabling conditions

HINT:

·

If the judgment result is NORMAL, the system is normal.

·

If the judgment result is ABNORMAL, the system is malfunctioning.

·

[A] to [B]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

·

When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

P04419C

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

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

5.

Turn the ignition switch off and wait for at least 30 seconds.

6.

Turn the ignition switch to ON.

7.

Turn the GTS on.

8.

Put the engine in Inspection Mode (Maintenance Mode).

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9.

Start the engine and wait 15 minutes or more [A].

10.

Enter the following menus: Powertrain / Engine / Trouble Codes [B].

11.

Read the pending DTCs.

HINT:

·

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

·

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

12.

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

13.

Input the DTC: P04419C.

14.

Check the DTC judgment result.

GTS Display	Description
NORMAL	· DTC judgment completed · System normal
ABNORMAL	· DTC judgment completed · System abnormal
INCOMPLETE	· DTC judgment not completed · Perform driving pattern after confirming DTC enabling conditions

HINT:

·

If the judgment result is NORMAL, the system is normal.

·

If the judgment result is ABNORMAL, the system is malfunctioning.

·

[A] to [B]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

·

When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

NOTICE:

·

Vehicle Control History may be stored in the hybrid vehicle control ECU assembly if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the Freeze Frame Data and Vehicle Control History can be useful for troubleshooting.

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(Select Powertrain in Health Check and then check the time stamp data.)

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·

If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

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