Nissan GT-R (R35) · Service Manual ENGINE

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

VR38

P0444 P0445

Description


The EVAP canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.

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DTC Logic

 
 DTC DETECTION LOGIC

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P0444
 		EVAP canister purge volume control solenoid valve circuit open
 		An excessively low voltage signal is sent to ECM through the valve
  • Harness or connectors
    (The solenoid valve circuit is open or shorted.)
  • EVAP canister purge volume control solenoid valve
P0445
 		EVAP canister purge volume control solenoid valve circuit shorted
 		An excessively high voltage signal is sent to ECM through the valve
  • Harness or connectors
    (The solenoid valve circuit is shorted.)
  • EVAP canister purge volume control solenoid valve

 
 DTC CONFIRMATION PROCEDURE

 
 1.CONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
 
 2.DETECT MALFUNCTIONING PART
 
 3.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
 
 4.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
 
 5.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
 
 6.CHECK INTERMITTENT INCIDENT

Component Inspection


 
 1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE