- DTC judgment completed
- System normal
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001GJ70 |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 04/2020] |
| Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P142000,P142100; Evaporative Emission Canister (Small Leak); 2020 MY Corolla Corolla HV [01/2019 - 04/2020] | ||
|
DTC |
P142000 |
Evaporative Emission Canister (Small Leak) |
|
DTC |
P142100 |
Evaporative Emission Canister (Gross Leak) |
DTC SUMMARY
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P142000 |
Evaporative Emission Canister (Small Leak) |
Leak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure is measured. Reference pressure is measured at the start and at the end of leak check. If stabilized pressure is higher than second reference pressure, ECM determines that EVAP system has a small leak. |
|
Comes on |
DTC stored |
|
|
P142100 |
Evaporative Emission Canister (Gross Leak) |
Leak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure is measured. Reference pressure is measured at the start and at the end of leak check. If stabilized pressure is higher than [second reference pressure x 0.2], ECM determines that EVAP system has a large leak. |
|
Comes on |
DTC stored |
|
|
DTC No. |
Monitoring Item |
Detection Timing |
Detection Logic |
SAE Code |
|---|---|---|---|---|
|
P142000 |
Canister small leak |
EVAP monitoring (Power switch off) |
2 trip |
P1420 |
|
P142100 |
Canister gross leak |
P1421 |
DESCRIPTION
Refer to EVAP (evaporative emission) System.
Click here
![2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: EVAP System+](/t3Portal/stylegraphics/info.gif)
MONITOR DESCRIPTION
-
P142000: EVAP (evaporative emission) small leak
In operation C, the leak detection pump creates negative pressure (vacuum) in the EVAP system and the EVAP system pressure is measured. If the stabilized system pressure is higher than the second reference pressure, the ECM determines that the EVAP system has a small leak, illuminates the MIL and stores the DTC (2 trip detection logic).
-
P142100: EVAP gross leak
In operation C, the leak detection pump creates negative pressure (vacuum) in the EVAP system and the EVAP system pressure is measured. If the stabilized system pressure is higher than [second reference pressure x 0.2] (near atmospheric pressure), the ECM determines that the EVAP system has a large leak, illuminates the MIL and stores the DTC (2 trip detection logic).
MONITOR STRATEGY
|
Required Sensors/Components (Main) |
Purge VSV Canister pump module |
|
Required Sensors/Components (Related) |
- |
|
Frequency of Operation |
Once per driving cycle |
|
Duration |
Within 20 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 (P0452 and P0453) |
Not detected |
|
Fuel tank pressure sensor malfunction (P1452 and 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 |
|
Both of the following conditions (a) and (b) are met before Key-OFF |
- |
|
(a). Duration that vehicle is being driven |
5 minutes or more |
|
(b). Purge flow |
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
P1420: EVAP Small Leak
|
EVAP pressure when vacuum introduction for canister was complete |
Between conditions 1 and 2 |
|
Condition 1 |
Higher than second reference pressure |
|
Condition 2 |
Lower than [second reference pressure x 0.2] |
P1421: EVAP Gross Leak
|
EVAP pressure when vacuum introduction for canister was complete |
Higher than [second reference pressure x 0.2] |
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 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.
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: P142000 or P142100.
-
Check the DTC judgment result.
Techstream Display
Description
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.
PROCEDURE
|
1. |
GO TO EVAP SYSTEM |
(a) Refer to EVAP System.
Click here
| NEXT |
|
END |
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