SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P043E00, P043F00, P24007E, P24007F, P24187E

DTC Code	DTC Name
P043E00	Evaporative Emission System Leak Detection Reference Orifice Low Flow
P043F00	Evaporative Emission System Leak Detection Reference Orifice High Flow
P24007E	Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck On
P24007F	Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck Off
P24187E	Evaporative Emission System Switching Valve Control Circuit Actuator Stuck On

DTC SUMMARY

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P043E00	Evaporative Emission System Leak Detection Reference Orifice Low Flow	Reference orifice clogged during key-off EVAP monitor	Canister pump module Wire harness or connector (canister pump module - ECM) ECM	Comes on	DTC stored	SAE Code: P043E
P043F00	Evaporative Emission System Leak Detection Reference Orifice High Flow	Reference orifice high-flow during key-off EVAP monitor	Canister pump module Wire harness or connector (canister pump module - ECM) ECM	Comes on	DTC stored	SAE Code: P043F
P24007E	Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck On	Leak detection pump on malfunction during key-off EVAP monitor	Canister pump module Wire harness or connector (canister pump module - ECM) ECM	Comes on	DTC stored	SAE Code: P2402
P24007F	Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck Off	Leak detection pump off malfunction during key-off EVAP monitor	Canister pump module Wire harness or connector (canister pump module - ECM) ECM	Comes on	DTC stored	SAE Code: P2401
P24187E	Evaporative Emission System Switching Valve Control Circuit Actuator Stuck On	Vent valve on (closed) malfunction during key-off EVAP monitor	Canister pump module Wire harness or connector (canister pump module - ECM) ECM	Comes on	DTC stored	SAE Code: P2419

Tech Tips

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 (Engine switch off)	2 trip	P043E
P043F00	Reference orifice high-flow			P043F
P24007E	Leak detection pump stuck ON			P2402
P24007F	Leak detection pump stuck OFF			P2401
P24187E	Vent valve stuck closed			P2419

DESCRIPTION

The description can be found in EVAP (Evaporative Emission) System.

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MONITOR DESCRIPTION

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

Tech Tips

*: If the engine coolant temperature is not less than 35°C (95°F) 5 hours after the engine 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 engine 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 engine switch 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	No. 1 check valve monitor	Purge VSV is opened and then EVAP system pressure is measured by ECM. If the pressure does not change, ECM interprets this as normal.	20 seconds
E	Vent valve monitor	Vent valve is turned on (opened) and then EVAP system pressure is measured by ECM. Large increase indicates normal.	10 seconds
F	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.

*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
*13	No. 1 Check Valve	-	-
*a	Operation A: Atmospheric Pressure Measurement	*b	Operation B, F: Reference Pressure Measurement
*c	Operation C: EVAP System Pressure Measurement	*d	Operation D: No. 1 Check Valve Monitor
*e	Operation E: Vent Valve Monitor	*f	Atmospheric Pressure
*g	Negative Pressure	-	-

P043E00, P043F00, P24007E, P24007F or P24187E (Case 1)
The leak detection pump creates negative pressure through the reference orifice (in operation B to D, and F). When the system is normal, the EVAP pressure is between 97 to 100 kPa(abs) [14.07 to 14.5 psi(abs)]* and saturated within a minute. If not, the ECM interprets this as a malfunction. The ECM illuminates the MIL and stores a DTC if this malfunction is detected in consecutive drive cycles.

*: Typical value.

P24187E (Case 2)
In operation E, the canister pressure sensor measures the EVAP (Evaporative Emission) system pressure. The pressure measurement for the vent valve monitor begins when the vent valve is turned off (vent) after the EVAP leak check. When the measured pressure indicates an increase of 0.3 kPa(gauge) [0.04 psi(gauge)] or higher, the vent valve is functioning normally. If the pressure does not increase, the ECM interprets this as the vent valve being stuck closed, illuminates the MIL and stores the DTC (2 trip detection logic).

MONITOR STRATEGY

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

CONFIRMATION DRIVING PATTERN

Note

The Evaporative System Check (Automatic Mode) consists of 7 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).

Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG) and turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.
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, P24007E, P24007F or P24187E.

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
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

Tech Tips

If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.

PROCEDURE

GO TO EVAP SYSTEM

Refer to EVAP System.

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Result

Proceed to
NEXT

END