M20F-FXS, M20G-FXS ENGINE CONTROL SFI SYSTEM P043E00 Evaporative Emission System Leak Detection Reference Orifice Low Flow P043F00 Evaporative Emission System Leak Detection Reference Orifice High Flow P044672 EVAP System Vent Valve Stuck Open Actuator Stuck Open P24007E Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck On P24007F Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck Off
DTC SUMMARY
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Note |
|---|---|---|---|---|---|
| P043E00 | Evaporative Emission System Leak Detection Reference Orifice Low Flow | Reference orifice detected as clogged during key-off EVAP monitor. | ·
Canister pump module ·
Connector/wire harness (Canister pump module - ECM) ·
EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ·
ECM |
Comes on | SAE Code: P043E |
| P043F00 | Evaporative Emission System Leak Detection Reference Orifice High Flow | Reference orifice flow high during key-off EVAP monitor. | ·
Canister pump module ·
Connector/wire harness (Canister pump module - ECM) ·
EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ·
ECM |
Comes on | SAE Code: P043F |
| P044672 | EVAP System Vent Valve Stuck Open Actuator Stuck Open | Vent valve on (closed) malfunction detected during key-off EVAP monitor. | ·
Canister pump module ·
Connector/wire harness (Canister pump module - ECM) ·
EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ·
ECM |
Comes on | SAE Code: P2421 |
| P24007E | Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck On | Leak detection pump on malfunction detected during key-off EVAP monitor. | ·
Canister pump module ·
Connector/wire harness (Canister pump module - ECM) ·
EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ·
ECM |
Comes on | SAE Code: P2402 |
| P24007F | Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck Off | Leak detection pump off malfunction detected during key-off EVAP monitor. | ·
Canister pump module ·
Connector/wire harness (Canister pump module - ECM) ·
EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ·
ECM |
Comes on | SAE Code: P2401 |
- HINT:
-
The reference orifice is located inside the canister pump module.
| DTC No. | Monitoring Item | Detection Timing | Detection Logic | SAE Code |
|---|---|---|---|---|
| P043E00 | Reference orifice clogged | EVAP monitoring
(Ignition switch off) |
2 trip | P043E |
| P043F00 | Reference orifice high-flow | P043F | ||
| P044672 | Vent valve (built into canister pump module) stuck open | P2421 | ||
| P24007E | Leak detection pump stuck ON | P2402 | ||
| P24007F | Leak detection pump stuck OFF | P2401 |
DESCRIPTION
Refer to EVAP (Evaporative Emission) System.
MONITOR DESCRIPTION
In sequence B and E, the leak detection pump creates negative pressure (vacuum) through the reference orifice. The EVAP system pressure is then measured by the ECM, using the canister pressure sensor, to determine the reference pressure. If the pressure detected meets one of the following conditions, the ECM will illuminated the MIL and store a DTC (2 trip detection logic).
EVAP pressure is lower than the malfunction criterion.
EVAP pressure is higher than the malfunction criterion.
EVAP pressure is not saturated within 60 seconds.
EVAP pressure difference between sequence B and E is large.
MONITOR STRATEGY
| Required Sensors/Components | Canister pump module |
| 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 higher 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.
·When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON [A].
Turn the GTS 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: P043E00, P043F00, P044672, P24007E or P24007F.
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 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.
(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 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.
PROCEDURE
- Result:
Proceed to NEXT
NEXT