RM38T0EC _51 Engine / Hybrid System _144956 M20F-FXS, M20G-FXS ENGINE CONTROL _0604911 SFI SYSTEM C

M20F-FXS, M20G-FXS ENGINE CONTROL  SFI SYSTEM  P046673  EVAP System Vent Valve Stuck Closed Actuator Stuck Closed  


DTC SUMMARY

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
P046673 EVAP System Vent Valve Stuck Closed Actuator Stuck Closed Following condition is met during key-off EVAP monitor:
·

EVAP pressure change when vent valve on (closed) less than 0.3 kPa [0.04 psi]


·

Canister pump module (reference orifice, leak detection pump, vent valve)

·

Connector/wire harness (Canister pump module - ECM)

·

Canister (filter inside canister clogged)

·

ECM


Comes on SAE Code: P2422

DTC No. Monitoring Item Detection Timing Detection Logic SAE Code
P046673 Vent valve (built into canister pump module) stuck closed EVAP monitoring
(ignition switch off) 		2 trip P2422

HINT:

The vent valve is built into the canister pump module.


MONITOR DESCRIPTION

P046673: Vent valve stuck closed

In operation C, the vent valve turns on (closed) and the EVAP system pressure is then measured by the ECM using the canister pressure sensor to conduct an EVAP leak check. If the pressure does not increase when the vent valve is open, the ECM interprets this as the vent valve being stuck closed. In this case the ECM will illuminate the MIL and store this DTC.

A319541E02
4.385,3.74 4.302,3.438 false 2.979,5.198 3.073,5.021 3.073,5.021 3.188,5.021 false 3.99,4.854 4.292,4.479 4.292,4.479 4.448,4.479 false 3.927,3.438 4.438,3.438 4.438,3.438 4.688,4.25 false 4.969,2.76 5.188,2.76 5.188,2.76 5.354,3.156 false 4.281,1.958 4.115,1.958 4.115,1.958 4.01,2.396 false 4.49,1.115 4.323,1.115 4.323,1.115 4.281,0.885 false 4.531,0.323 4.375,0.323 4.375,0.323 3.99,0.75 false 0.292,0.219 1.521,0.417 1.229,0.198 10 false Method A 0.375,0.802 1.729,1.271 1.354,0.469 10 false Vent Valve (Switching Valve) 0.417,1.479 1.75,1.927 1.333,0.448 10 false Leak Detection Pump 1.063,2.448 1.76,2.813 0.698,0.365 10 false Purge VSV 0.271,3.188 1.74,3.594 1.469,0.406 10 false Fuel Vapor-containment Valve 0.573,3.906 1.865,4.563 1.292,0.656 10 false Fuel Tank Pressure 0.75,4.76 1.76,5.146 1.01,0.385 10 false EVAP Pressure 1.594,5.219 1.865,5.563 0.271,0.344 10 false *1 1.073,6.01 1.729,6.417 0.656,0.406 10 false Sequence 1.333,6.417 1.729,6.667 0.396,0.25 10 false Time 1.656,6.698 2.615,6.958 0.958,0.26 10 false 60 seconds 2.104,6.896 3.063,7.156 0.958,0.26 10 false 360 seconds 2.844,6.708 4.365,6.969 1.521,0.26 10 false Within 15 minutes 3.552,6.917 4.365,7.167 0.813,0.25 10 false 10 seconds 4.125,6.719 4.938,6.969 0.813,0.25 10 false 60 seconds 5.167,6.708 5.979,6.958 0.813,0.25 10 false 15 seconds 5.958,4.76 6.792,5.146 0.833,0.385 10 false Atmospheric Pressure 5.938,3.885 6.771,4.271 0.833,0.385 10 false Atmospheric Pressure 5.292,3.302 6.125,3.688 0.833,0.385 10 false ON 3.24,4.948 3.625,5.198 0.385,0.25 10 false OK 4.479,4.396 5.208,4.729 0.729,0.333 10 true Malfunction 2.646,3.333 3.896,3.688 1.25,0.354 10 true Fuel Tank Pressure 4.323,1.865 4.99,2.229 0.667,0.365 10 true ON: Open 4.542,1.031 5.208,1.396 0.667,0.365 10 true OFF: Vent 3.927,2.469 4.146,2.813 0.219,0.344 10 false ON 4.604,0.24 5.271,0.604 0.667,0.365 10 true ON: Close 3.229,1.531 3.448,1.875 0.219,0.344 10 false ON 3.229,0.792 3.448,1.135 0.219,0.344 10 false ON 5.177,0.813 5.396,1.052 0.219,0.24 10 true ON 4.292,2.656 4.958,3.021 0.667,0.365 10 true ON: Open 1.948,5.917 2.333,6.167 0.385,0.25 10 false A 2.448,5.917 2.833,6.167 0.385,0.25 10 false B 3.26,5.917 3.646,6.167 0.385,0.25 10 false C 4,5.917 4.385,6.167 0.385,0.25 10 false D 4.5,5.917 4.885,6.167 0.385,0.25 10 false E 4.917,5.917 5.302,6.167 0.385,0.25 10 false F 5.375,5.917 5.76,6.167 0.385,0.25 10 false I 2.135,7.417 2.948,7.667 0.813,0.25 10 false : OK 3.031,7.417 3.844,7.667 0.813,0.25 10 false : Malfunction 4.344,7.417 6.771,7.677 2.427,0.26 10 false *1: 1st Reference Pressure 4.667,6.917 5.479,7.167 0.813,0.25 10 false 5 seconds

A319542E01
5.073,4.906 5.354,3.677 false 3.271,0.833 3.563,0.417 3.563,0.417 3.677,0.417 false 6.083,0.979 6.135,1.115 6.135,1.115 6.25,1.115 false 3.667,2.458 3.802,2.052 3.802,2.052 3.917,2.052 false 5.667,3.177 5.854,2.813 5.854,2.813 6.083,2.813 false 4.896,4.125 5.115,3.667 5.115,3.667 5.5,3.667 false 3.698,4.896 4.052,4.469 4.052,4.469 4.26,4.469 false 2.656,5.271 2.792,5.073 2.792,5.073 2.906,5.073 false 0.25,0.229 1.479,0.427 1.229,0.198 10 false Method B 0.042,0.854 1.438,1.25 1.396,0.396 10 false Vent Valve (Switching Valve) 0.052,1.698 1.448,2.094 1.396,0.396 10 false Leak Detection Pump 0.677,2.51 1.5,2.771 0.823,0.26 10 false Purge VSV 0.573,3.156 1.344,3.792 0.771,0.635 10 false Fuel Vapor-containment Valve 0.188,4.042 1.583,4.594 1.396,0.552 10 false Fuel Tank Pressure 0.396,4.823 1.792,5.375 1.396,0.552 10 false EVAP Pressure 1.24,5.271 1.563,5.479 0.323,0.208 10 false *1 0.74,5.875 1.833,6.125 1.094,0.25 10 false Sequence 0.969,6.281 2.063,6.531 1.094,0.25 10 false Time 1.24,6.5 2.333,6.75 1.094,0.25 10 false 60 seconds 1.708,6.708 2.802,6.958 1.094,0.25 10 false 360 seconds 2.417,6.5 3.927,6.75 1.51,0.25 10 false Within 15 minutes 3.323,6.719 4.833,6.969 1.51,0.25 10 false 10 seconds 3.844,6.5 5.354,6.75 1.51,0.25 10 false 60 seconds 4.333,6.719 5.844,6.969 1.51,0.25 10 false 5 seconds 1.969,7.344 3.479,7.594 1.51,0.25 10 false : OK 5.948,6.708 7.083,7 1.135,0.292 10 false 60 seconds 4.833,6.5 6.344,6.75 1.51,0.25 10 false Within 15 minutes 2.854,7.333 3.813,7.563 0.958,0.229 10 false : Malfunction 4.021,7.344 6.177,7.583 2.156,0.24 10 false *1: 1st Reference Pressure 3.729,0.333 4.406,0.729 0.677,0.396 10 true ON: Close 6.302,1.031 6.979,1.427 0.677,0.396 10 true OFF: Vent 3.958,1.979 4.635,2.375 0.677,0.396 10 true ON: Open 6.115,2.729 6.792,3.125 0.677,0.396 10 true ON: Open 5.573,3.573 6.938,3.917 1.365,0.344 10 true Atmospheric Pressure 4.302,4.385 5.042,4.781 0.74,0.396 10 true Malfunction 2.854,0.625 3.146,0.875 0.292,0.25 10 false ON 5.25,0.885 5.542,1.135 0.292,0.25 10 false ON 2.833,1.708 3.125,1.958 0.292,0.25 10 false ON 5.24,1.698 5.531,1.948 0.292,0.25 10 false ON 5.24,3.208 5.531,3.458 0.292,0.25 10 false ON 2.948,4.99 3.24,5.24 0.292,0.25 10 false OK 1.563,5.75 1.854,6 0.292,0.25 10 false A 2.104,5.75 2.396,6 0.292,0.25 10 false B 2.958,5.75 3.25,6 0.292,0.25 10 false C 3.656,5.75 3.948,6 0.292,0.25 10 false D 4.177,5.75 4.469,6 0.292,0.25 10 false E 4.604,5.75 4.896,6 0.292,0.25 10 false F 5.333,5.75 5.625,6 0.292,0.25 10 false G 6.24,5.75 6.531,6 0.292,0.25 10 false H 3.604,2.521 3.896,2.771 0.292,0.25 10 false ON

MONITOR STRATEGY

Required Sensors/Components Canister pump module
Purge VSV
Frequency of Operation Once per driving cycle

CONFIRMATION DRIVING PATTERN

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.

Click hereEngine / Hybrid System>M20F-FXS, M20G-FXS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

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

Click hereEngine / Hybrid System>M20F-FXS, M20G-FXS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR



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: P046673.

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.




CAUTION / NOTICE / HINT

NOTICE:
·

Vehicle Control History may be stored in the hybrid vehicle control ECU 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.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>VEHICLE CONTROL HISTORY (RoB)

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

·

If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, 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.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>VEHICLE CONTROL HISTORY (RoB)



HINT:

If the cable is disconnected from the auxiliary battery terminal, the fuel vapor containment valve cannot close completely and an EVAP SYSTEM DTC will be stored. If the DTC is output, drive the vehicle at a speed of 10 km/h (6 mph) or more and then leave the vehicle for 30 seconds or more. Then perform the Evaporative System Check again.