SFI SYSTEM(for Rear Air Fuel Ratio Sensor), 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

Tech Tips

This DTC is applicable to w/ Canister Pump Module only.

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
P043E00 Reference orifice clogged While engine switch off 2 trip P043E
P043F00 Reference orifice high-flow While engine switch off 2 trip P043F
P24007E Leak detection pump stuck ON While engine switch off 2 trip P2402
P24007F Leak detection pump stuck OFF While engine switch off 2 trip P2401
P24187E Vent valve stuck closed While engine switch off 2 trip P2419

DESCRIPTION

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

Click here

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 below 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 below 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 kPa(abs) and 110 kPa(abs) [10.15 psi(abs) and 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 off (vent) 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.

B007ZHIC01
*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 - -


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 below 35°C (95°F).


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Turn the engine switch off and wait for at least 30 seconds.

  6. Turn the engine switch on (IG).

  7. Turn the GTS on.

  8. Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.

  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: P043E00, P043F00, P24007E, P24007F or P24187E.

  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

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

PROCEDURE


  1. GO TO EVAP SYSTEM


    1. Refer to EVAP System.

      Click here

      Result
      Proceed to
      NEXT

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