RM36D0EC _51 Engine / Hybrid System _083058 M20D-FKS ENGINE CONTROL _0401834 SFI SYSTEM C

M20D-FKS ENGINE CONTROL  SFI SYSTEM  P24187F  Evaporative Emission System Switching Valve Control Circuit Actuator Stuck Off  


DTC SUMMARY

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P24187F Evaporative Emission System Switching Valve Control Circuit Actuator Stuck Off Following condition met during key-off EVAP monitor:
·

EVAP pressure change when vent valve closed (on) less than 0.3 kPa(gauge) [0.044 psi(gauge)]


·

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

·

Wire harness or connector (Canister pump module - ECM)

·

Canister (filter inside canister clogged)

·

ECM


Comes on DTC stored SAE: P2420

DTC No. Monitoring Item Detection Timing Detection Logic SAE
P24187F Vent valve stuck open (vent) EVAP monitoring
(ignition switch off) 		2 trip P2420

HINT:

The vent valve is built into the canister pump module.


MONITOR DESCRIPTION

5 hours* after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the EVAP (Evaporative Emission) system. The ECM monitors for leaks and actuator malfunctions based on the EVAP pressure.

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.


Sequence Operation Description Duration
- ECM activation Activated by soak timer, 5, 7 or 9.5 hours after ignition switch is turned off. -
A Atmospheric pressure measurement Vent valve is turned off (vent) and EVAP system pressure is measured by ECM in order to register atmospheric pressure.
If pressure in EVAP system is not between 70 to 110 kPa(abs) [10.15 to 15.95 psi(abs)], ECM cancels EVAP system monitor. 		60 seconds
B First reference pressure measurement In order to determine reference pressure, leak detection pump creates negative pressure (vacuum) through reference orifice and then ECM checks if leak detection pump and vent valve operate normally. 360 seconds
C EVAP system pressure measurement Vent valve is turned on (closed) to shut EVAP system.
Negative pressure (vacuum) is created in EVAP system, and EVAP system pressure is then measured.
Write down measured value as it will be used in leak check
If EVAP pressure does not stabilize within 15 minutes, ECM cancels EVAP system monitor. 		15 minutes*
D Purge VSV monitor Purge VSV is opened and then EVAP system pressure is measured by ECM.
Large increase indicates normal. 		10 seconds
E Second reference pressure measurement After second reference pressure measurement, leak check is performed by comparing first and second reference pressure measurements.
If stabilized system pressure is higher than second reference pressure, ECM determines that EVAP system is leaking. 		60 seconds
- Final check Atmospheric pressure is measured and then monitoring result is recorded by ECM. -

*: If only a small amount of fuel is in the fuel tank, it takes longer for the EVAP pressure to stabilize.

A373424C01
1.229,0.573 1.333,0.167 1.333,0.167 1.5,0.167 true 1.625,0.719 1.667,0.344 1.667,0.344 1.833,0.344 true 2.458,0.74 2.656,0.5 2.656,0.5 2.823,0.5 true 1.75,1.49 2.167,1.073 2.167,1.073 2.5,1.073 true 2.417,1.583 2.615,1.344 2.615,1.344 2.781,1.344 true 2.875,1.969 3.083,1.833 3.083,1.833 3.25,1.833 true 0.74,1.875 0.906,1.875 0.906,1.875 1.156,1.625 true 0.667,2.25 0.833,2.25 0.833,2.25 1.521,1.854 true 1.927,2.354 1.76,2.354 1.76,2.354 1.625,2.104 true 1.229,2.938 1.417,2.667 1.417,2.667 1.583,2.667 true 1.896,3.885 2.167,3.51 2.167,3.51 2.5,3.51 true 5.25,0.573 5.354,0.167 5.354,0.167 5.521,0.167 true 5.792,1.49 6.208,1.073 6.208,1.073 6.542,1.073 true 5.948,2.365 5.781,2.365 5.781,2.365 5.646,2.115 true 5.208,2.948 5.396,2.677 5.396,2.677 5.563,2.677 true 5.844,3.885 6.115,3.51 6.115,3.51 6.448,3.51 true 0.833,4.333 1.573,4.438 true 4.802,4.333 5.542,4.438 true 0.365,0.135 0.677,0.333 0.313,0.198 10 false *a 1.521,0.083 1.833,0.281 0.313,0.198 10 false *1 1.854,0.26 2.167,0.458 0.313,0.198 10 false *9 2.854,0.417 3.167,0.615 0.313,0.198 10 false *10 2.521,1 2.833,1.198 0.313,0.198 10 false *3 2.802,1.271 3.115,1.469 0.313,0.198 10 false *11 3.271,1.74 3.583,1.938 0.313,0.198 10 false *12 0.594,1.802 0.906,2 0.313,0.198 10 false *7 0.521,2.177 0.833,2.375 0.313,0.198 10 false *8 1.938,2.271 2.25,2.469 0.313,0.198 10 false *5 1.594,2.583 1.906,2.781 0.313,0.198 10 false *1 2.521,3.427 2.833,3.625 0.313,0.198 10 false *4 0.677,4.25 1.042,4.427 0.365,0.177 10 false *6 0.365,2.552 0.677,2.75 0.313,0.198 10 false *c 4.375,0.135 4.688,0.333 0.313,0.198 10 false *b 4.385,2.552 4.698,2.75 0.313,0.198 10 false *d 3.604,3.281 3.917,3.479 0.313,0.198 10 false *e 3.615,3.677 3.927,3.875 0.313,0.198 10 false *f 5.542,0.083 5.854,0.281 0.313,0.198 10 false *1 6.563,0.99 6.875,1.188 0.313,0.198 10 false *3 5.958,2.281 6.271,2.479 0.313,0.198 10 false *6 5.583,2.594 5.896,2.792 0.313,0.198 10 false *2 6.469,3.438 6.781,3.635 0.313,0.198 10 false *4 4.646,4.25 5.01,4.427 0.365,0.177 10 false *6
*1 Purge VSV: Off (Closed) *2 Purge VSV: On (Open)
*3 Vent Valve: Off (Vent) *4 Vent Valve: On (Closed)
*5 Leak Detection Pump: Off *6 Leak Detection Pump: On
*7 Reference Orifice (0.02 inch) *8 Canister Pressure Sensor
*9 Canister *10 Fuel Tank
*11 Canister Pump Module *12 Canister Filter
*a Operation A:
Atmospheric Pressure Measurement 		*b Operation B, E:
Reference Pressure Measurement
*c Operation C:
EVAP System Pressure Measurement 		*d Operation D:
Purge VSV Monitor
*e Atmospheric Pressure *f Negative Pressure


P24187F: Vent Valve Stuck Open (Vent)

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 open. The ECM illuminates the MIL and stores this DTC.

A284400E01
0.063,0.031 3.042,0.281 2.979,0.25 10 EVAP Pressure when Vent Valve Stuck OFF: 0.427,0.51 1.229,0.708 0.802,0.198 10 Purge VSV 0.458,1.052 1.26,1.25 0.802,0.198 10 Vent Valve 0.146,1.406 1.156,1.781 1.01,0.375 10 Leak Detection Pump 0.073,1.958 1.135,2.135 1.063,0.177 10 EVAP Pressure 0.135,2.208 1.198,2.385 1.063,0.177 10 Positive 0.125,2.521 1.188,2.698 1.063,0.177 10 Negative 0.135,3.083 1.073,3.438 0.938,0.354 10 First Reference Pressure 2.594,4.042 2.896,4.219 0.302,0.177 10 B 0.167,4.302 1.344,4.5 1.177,0.198 10 Time (Seconds) 1.719,4.042 2.021,4.219 0.302,0.177 10 A 3.875,4.052 4.177,4.229 0.302,0.177 10 C 5.167,4.292 5.438,4.458 0.271,0.167 10 10 5.708,4.281 6.01,4.458 0.302,0.177 10 60 5.74,4.063 6.042,4.24 0.302,0.177 10 E 5.177,4.063 5.448,4.229 0.271,0.167 10 D 3.49,4.271 4.677,4.458 1.188,0.188 10 Within 15 minutes 2.5,4.281 2.802,4.458 0.302,0.177 10 360 1.688,4.292 1.99,4.469 0.302,0.177 10 60 3.208,2.813 3.51,2.99 0.302,0.177 10 OK 3.188,3.813 4.24,3.99 1.052,0.177 10 Malfunction 5.135,0.448 5.438,0.625 0.302,0.177 10 ON 3.917,0.99 4.219,1.167 0.302,0.177 10 ON 3.917,1.49 4.219,1.667 0.302,0.177 10 ON 6.167,0.281 6.844,0.469 0.677,0.188 10 ON: Open 6.177,0.573 7.052,0.76 0.875,0.188 10 OFF: Closed 6.208,0.854 7.083,1.042 0.875,0.188 10 ON: Closed 6.198,1.135 7.073,1.323 0.875,0.188 10 OFF: Vent 0.51,3.875 1.688,4.073 1.177,0.198 10 Sequence


MONITOR STRATEGY

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

CONFIRMATION DRIVING PATTERN

NOTICE:
·

The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.

·

Do not perform the Evaporative System Check when the fuel tank is higher 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 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>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

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

Click hereEngine / Hybrid System>M20D-FKS (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: P24187F.

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 battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.