|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|
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||
||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||
||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||
||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||
||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||
||Comes on||DTC stored||SAE Code: P2419|
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|
The description can be found in EVAP (Evaporative Emission) System.
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.
*: 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.
|-||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.
|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.
|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.
|E||Vent Valve monitor||
Vent valve is turned off (vent) and then EVAP system pressure is measured by ECM.
Large increase indicates normal.
|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.
|-||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|
|*11||Canister Pump Module||*12||Canister Filter|
|*13||No. 1 Check Valve||-||-|
Atmospheric Pressure Measurement
Operation B, F:
Reference Pressure Measurement
EVAP System Pressure Measurement
No. 1 Check Valve Monitor
Vent Valve Monitor
The leak detection pump creates negative pressure through the reference orifice (in operation B 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.
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) [0.44 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).
|Required Sensors/Components||Canister pump module|
|Frequency of Operation||Once per driving cycle|
CONFIRMATION DRIVING PATTERN
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).
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
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).
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.
If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
GO TO EVAP SYSTEM
Refer to EVAP System.