Nissan GT-R (R35) · Service Manual ENGINE

P0075, P0081 IVT CONTROL SOLENOID VALVE

VR38

P0075 P0081

Description


Intake valve timing control solenoid valve is activated by ON/OFF pulse duty (ratio) signals from the ECM.

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The intake valve timing control solenoid valve changes the oil amount and direction of flow through intake valve timing control unit or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve stops oil pressure flow to fix the intake valve angle at the control position.

DTC Logic

 
 DTC DETECTION LOGIC

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P0075
 		Intake valve timing control solenoid valve (bank 1) circuit
 		An improper voltage is sent to the ECM through intake valve timing control solenoid valve.
  • Harness or connectors
    (Intake valve timing control solenoid valve circuit is open or shorted.)
  • Intake valve timing control solenoid valve
P0081
 		Intake valve timing control solenoid valve (bank 2) circuit

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
 
 2.DETECT MALFUNCTIONING PART
 
 3.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
 
 4.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
 
 5.CHECK INTERMITTENT INCIDENT

Component Inspection


 
 1.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-I
 
 2.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II