DTC DETECTION LOGIC
DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause |
P0448 | VENT CONTROL VALVE (EVAP canister vent control valve close) | EVAP canister vent control valve remains closed under specified driving conditions. |
|
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
Never exceed 3 minutes.
7. Check 1st trip DTC.
With GST
Follow the procedure "With CONSULT" above.
Is 1st trip DTC detected?
YES >> Proceed to EC, "Diagnosis Procedure".
NO >> INSPECTION END
1.CHECK RUBBER TUBE
Is the inspection result normal?
YES >> GO TO 2.
NO >> Clean rubber tube using an air blower.
2.CHECK EVAP CANISTER VENT CONTROL VALVE
Check the EVAP canister vent control valve. Refer to EC, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace EVAP canister vent control valve. Refer to FL, "Removal and Installation".
3.CHECK IF EVAP CANISTER IS SATURATED WITH WATER
Does water drain from EVAP canister?
YES >> GO TO 4.
NO >> GO TO 6.
4.CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached.
The weight should be less than 1.6 kg (3.5 lb).
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
>> Repair hose or replace EVAP canister. Refer to FL, "Removal and Installation".
6.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
Water should not exist.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Replace EVAP control system pressure sensor. Refer to FL, "Removal and Installation".
7.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Check the EVAP control system pressure sensor. Refer to EC, "Component Inspection".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI, "Intermittent Incident".
NO >> Replace EVAP control system pressure sensor. Refer to FL, "Removal and Installation".
1.CHECK EVAP CANISTER VENT CONTROL VALVEI
Is it rusted?
YES >> Replace EVAP canister vent control valve. Refer to FL, "Removal and Installation".
NO >> GO TO 2.
2.CHECK EVAP CANISTER VENT CONTROL VALVEII
With CONSULT
Make sure new Oring is installed properly.
Operation takes less than 1
second.
Without CONSULT
Check air passage continuity and operation delay time under the following conditions.
Make sure new Oring is installed properly.
Operation takes less than 1 second.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace EVAP canister vent control valve. Refer to FL, "Removal and Installation".
3.CHECK EVAP CANISTER VENT CONTROL VALVEIII
With CONSULT
Make sure new Oring is installed properly.
Operation takes less than 1
second.
Without CONSULT
Make sure new Oring is installed properly.
Operation takes less than 1
second.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace EVAP canister vent control valve. Refer to FL, "Removal and Installation".
4-speed automatic transmission fluid (ATF) (if so equipped)
When checking or replacement of automatic
transmission fluid is required, it is recommended
that you visit a NISSAN dealer for servicing.
WARNING
When the engine is running, keep
hands, jewelry and clothing away from
any moving parts such as the cooling
fan and drive belts
Automatic t ...
VDC/TCS/ABS
Symptom Table
If ABS warning lamp and SLIP indicator lamp turn ON, perform self-diagnosis.
NOTE:
The ABS does not operate when the speed is 10 km/h (6 MPH) or less.
Under the following conditions, ABS is activated and vibration is
felt when brake pedal is lightly depressed (just place ...