Nissan GT-R (R35) · Service Manual ENGINE

P0447 EVAP CANISTER VENT CONTROL VALVE

VR38

P0447

Description


The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent.

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This solenoid valve responds to signals from the ECM. When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components.
This solenoid valve is used only for diagnosis, and usually remains opened.
When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows “EVAP Control System” diagnosis.

DTC Logic

 
 DTC DETECTION LOGIC

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P0447
 		EVAP canister vent control valve circuit open
 		An improper voltage signal is sent to ECM through EVAP canister vent control valve.
  • Harness or connectors
    (The valve circuit is open or shorted.)
  • EVAP canister vent control valve

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.INSPECTION START
 
 2.CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
 
 3.CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT
 
 4.DETECT MALFUNCTIONING PART
 
 5.CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
 
 6.DETECT MALFUNCTIONING PART
 
 7.CHECK RUBBER TUBE FOR CLOGGING
 
 8.CHECK EVAP CANISTER VENT CONTROL VALVE
 
 9.CHECK INTERMITTENT INCIDENT

Component Inspection


 
 1.CHECK EVAP CANISTER VENT CONTROL VALVE-I
 
 2.CHECK EVAP CANISTER VENT CONTROL VALVE-II
 
 3.CHECK EVAP CANISTER VENT CONTROL VALVE-III