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. |
| Comes on |
|
P043F00 |
Evaporative Emission System Leak Detection Reference Orifice High Flow |
Reference orifice flow high during key-off EVAP monitor. |
| Comes on |
|
P044672 |
EVAP System Vent Valve Stuck Open Actuator Stuck Open |
Vent valve on (closed) malfunction detected during key-off EVAP monitor. |
| Comes on |
|
P24007E |
Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck On |
Leak detection pump on malfunction detected during key-off EVAP monitor. |
| Comes on |
|
P24007F |
Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck Off |
Leak detection pump off malfunction detected during key-off EVAP monitor. |
| Comes on |
|
HINT:
The reference orifice is located inside the canister pump module.
DTC No. | Monitoring Item |
Detection Timing | Detection Logic |
SAE Code |
---|---|---|---|---|
P043E00 |
Reference orifice low flow |
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.
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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).
MONITOR STRATEGY
Required Sensors/Components (Main) | Canister pump module |
Required Sensors/Components (Related) |
- |
Frequency of Operation |
Once per driving cycle |
Duration |
Within 7 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) |
Ignition 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 |
Purge flow before key-OFF |
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
One of following conditions met | - |
EVAP pressure when 1.9 seconds after reference pressure measurement began |
Higher than -0.242 kPa(gauge) [-0.0351 psi(gauge)] |
Reference pressure (vary with atmospheric pressure) |
Less than -4.85 kPa(gauge) [-0.7 psi(gauge)] |
Reference pressure (vary with atmospheric pressure) |
-1.068 kPa(gauge) [-0.155 psi(gauge)] or higher |
Reference pressure (vary with atmospheric pressure) |
Not saturated |
Reference pressure difference between the first and second |
0.9 kPa(gauge) [0.1 psi(gauge)] or higher |
MONITOR RESULT
Refer to EVAP System.
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CONFIRMATION DRIVING PATTERN
NOTICE:
HINT:
Click here
Click here
GTS Display |
Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
HINT:
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
CAUTION / NOTICE / HINT
NOTICE:
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(Select Powertrain in Health Check and then check the time stamp data.)
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HINT:
If the cable is disconnected from the Auxiliary battery terminal, the fuel vapor containment valve cannot close completely and an EVAP SYSTEM DTC will be stored. If the DTC is output, drive the vehicle at a speed of 10 km/h (6 mph) or more and then leave the vehicle for 30 seconds or more. Then perform the Evaporative System Check again.
PROCEDURE
1. |
GO TO EVAP SYSTEM |
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NEXT | ![]() |
END |