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 is met during key-off EVAP monitor:
- EVAP pressure change when vent valve closed (on) 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 |
DTC stored | SAE Code: P2420 |
DTC No. | Monitoring Item |
Detection Timing | Detection Logic |
SAE Code | P24187F |
Vent valve stuck open (vent) | EVAP monitoring
(power switch off) | 2 trip |
P2420 | HINT: The vent valve is built into the canister pump module. DESCRIPTION
Refer to EVAP (Evaporative Emission) System. Click here
MONITOR DESCRIPTION
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. In this case the ECM will illuminate the MIL and store this
DTC.
MONITOR STRATEGY
Required Sensors/Components (Main) | Canister pump module
Purge VSV | Required Sensors/Components (Related) |
- | Frequency of Operation |
Once per driving cycle | Duration |
Within 7 minutes | MIL Operation |
2 driving cycles | Sequence of Operation |
None | TYPICAL ENABLING CONDITIONS
Key-off monitor runs when all of the following conditions are met |
- | Atmospheric pressure |
70 kPa(abs) [10.2 psi(abs)] or higher, and less than 110 kPa(abs) [16 psi(abs)] |
Auxiliary battery voltage |
10.5 V or higher |
Vehicle speed | Less than 4 km/h (2.5 mph) |
Power switch | Off |
Engine condition | Not running |
Key-OFF duration | 5, 7 or 9.5 hours |
Pressure sensor of canister pump module malfunction (P0451, P0452, P0453) |
Not detected |
Fuel tank pressure sensor malfunction (P1451, P1452, P1453) |
Not detected |
Purge VSV | Not operated by scan tool |
Vent valve | Not operated by scan tool |
Fuel vapor-containment valve |
Not operated by scan tool |
Leak detection pump | Not operated by scan tool |
Purge flow before key-OFF |
Performed | Engine coolant temperature |
4.4°C (39.9°F) or higher, and less than 35°C (95°F) |
Intake air temperature |
4.4°C (39.9°F) or higher, and less than 35°C (95°F) | TYPICAL MALFUNCTION THRESHOLDS
EVAP pressure change after EVAP canister vent valve on (closed) |
Less than 0.3 kPa [0.04 psi] | MONITOR RESULT
Refer to EVAP system. Click here CONFIRMATION DRIVING PATTERN
NOTICE:
- The Evaporative System Check (Automatic Mode) consists of 9 steps
performed automatically by the Techstream. 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 here
- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for at least 30 seconds.
- Turn the power switch on (IG) [A].
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode [B].
- After the Evaporative System Check is completed, check for All Readiness
by entering the following menus: Powertrain / Engine / Utility / All
Readiness.
- Input the DTC: P24187F.
- Check the DTC judgment result.
Techstream 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:
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
(a) Refer to EVAP system. Click here
NEXT |
| END | |