Control Valve

• Check oil filter screen for damage. If any is found, replace with new one.
  Fig 1: Checking Oil Filter Screen For Damage

  Courtesy of NISSAN MOTOR CO., U.S.A.
• Check resistance between terminals of 4WD solenoid valve, 2-4WD shift solenoid valve and transfer fluid temperature sensor.

  Resistance:  Refer to COMPONENT INSPECTION .

  Fig 2: Checking Resistance

  Courtesy of NISSAN MOTOR CO., U.S.A.
• Check sliding faces of control valves and plugs for abnormality. If any is found, replace the control valve assembly with new one.

Control valve:  Refer to SERVICE DATA AND SPECIFICATIONS (SDS) .

Fig 3: Locating Over All Length Of Control Valve

Courtesy of NISSAN MOTOR CO., U.S.A.

• Check each control valve spring for damage or distortion, and also check its free length, outer diameter and wire diameter. If any damage or fatigue is found, replace control valve body with new one.
• Replace control valve body together with clutch return spring as a set  .

  Inspection standard: Refer to  SERVICE DATA AND SPECIFICATIONS (SDS)  . 

  Fig 4: Checking Its Free Length, Outer Diameter And Wire Diameter Of Control Valve Spring

  Courtesy of NISSAN MOTOR CO., U.S.A.