DTC DETECTION LOGIC
DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause |
P0447 | VENT CONTROL VALVE (EVAP canister vent control valve circuit open) | An improper voltage signal is sent to ECM through EVAP canister vent control valve. |
|
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
TESTING CONDITION: Before performing the following procedure, confirm battery voltage is more than 11 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is 1st trip DTC detected?
YES >> Proceed to EC, "Diagnosis Procedure".
NO >> INSPECTION END
1.INSPECTION START
Do you have CONSULT?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT
Clicking sound should be heard.
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 3.
3.CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT
Is the inspection result normal?
YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace errordetected parts.
5.CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace errordetected parts.
6.CHECK RUBBER TUBE FOR CLOGGING
Is the inspection result normal?
YES >> GO TO 7.
NO >> Clean the rubber tube using an air blower.
7.CHECK EVAP CANISTER VENT CONTROL VALVE
Check the EVAP canister vent control valve. Refer to EC, "Component Inspection".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI, "Intermittent Incident".
NO >> Replace EVAP canister vent control valve. 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
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace EVAP canister vent control valve. Refer to FL, "Removal and Installation".
Seats
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Servicing air conditioner
The air conditioner system in your NISSAN vehicle
is charged with a refrigerant designed with
the environment in mind.
This refrigerant does not harm the earth's
ozone layer.
Special charging equipment and lubricant is required
when servicing your NISSAN air conditioner.
Using improper ...