Nissan GT-R (R35) · Service Manual ENGINE

P2440, P2442 AIR CUT SOLENOID VALVE

VR38

P2440 P2442

Description


The air cut solenoid valve is installed in the rear of the cylinder head and opens or closes the passage of the secondary air to the engine exhaust port. When activating the air pump, the ECM turns the air cut solenoid valve ON and opens the valve so that the air is supplied to the exhaust port. The ECM turns the air cut solenoid valve OFF and closes the valve to prevent air blow back. Then the ECM deactivates the air pump. The ECM does not activate the air cut solenoid valve directly. The ECM controls the air cut solenoid valve by turning the air cut solenoid valve relay ON/OFF.

NNBIB0002ZZ.JPG

DTC Logic

 
 DTC DETECTION LOGIC

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P2440
 		Air cut solenoid valve (bnak1) stuck open
  • ECM detects that the air cut solenoid valve (bank 1) is stuck open.
  • ECM detects that the air cut solenoid valve (bank 1, bank 2 or both bank) is stuck open.
  • Harness or connectors
    (Air cut solenoid valve circuit is open or shorted.)
    (Air cut solenoid valve relay circuit is open or shorted.)
  • Air cut solenoid valve
  • Air cut solenoid valve relay
P2442
 		Air cut solenoid valve (bnak2) stuck open
  • ECM detects that the air cut solenoid valve (bank 2) is stuck open.

 
 DTC CONFIRMATION PROCEDURE

 
 1.CHECK SECONDARY AIR INJECTION SYSTEM MASS AIR FLOW SENSOR
 
 2.PRECONDITIONING
 
 3.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.CHECK AIR CUT SOLENOID VALVE RELAY POWER SUPPLY CIRCUIT-I
 
 2.DETECT MALFUNCTIONING PART
 
 3.CHECK AIR CUT SOLENOID VALVE RELAY POWER SUPPLY CIRCUIT-II
 
 4.DETECT MALFUNCTIONING PART
 
 5.CHECK AIR CUT SOLENOID VALVE RELAY
 
 6.CHECK AIR CUT SOLENOID VALVE POWER SUPPLY CIRCUIT
 
 7.DETECT MALFUNCTIONING PART
 
 8.CHECK AIR CUT SOLENOID VALVE GROUND CIRCUIT FOR OPEN AND SHORT
 
 9.CHECK AIR CUT SOLENOID VALVE
 
 10.REPLACE COMPONENTS
 
 11.CHECK COMPONENTS
 
 12.CHECK INTERMITTENT INCIDENT

Component Inspection (AIR CUT SOLENOID VALVE RELAY)


 
 1.CHECK AIR CUT SOLENOID VALVE RELAY

Component Inspection (AIR CUT SOLENOID VALVE)


 
 1.CHECK AIR CUT SOLENOID VALVE