Diagnosis Procedure

1. Start engine.
2. Check oil pressure warning lamp and confirm it is not illuminated.

   Is oil pressure warning lamp illuminated? 

   YES: Proceed to "INSPECTION ".

   NO: GO TO 2.

   Fig 1: Identifying Oil Pressure Warning Lamp

   Courtesy of NISSAN NORTH AMERICA, INC.

Refer to "COMPONENT INSPECTION (INTAKE VALVE TIMING CONTROL SOLENOID VALVE) ".

Is the inspection result normal? 

YES: GO TO 3.

NO: Replace malfunctioning intake valve timing control solenoid valve. Refer to "EXPLODED VIEW ".

Refer to "COMPONENT INSPECTION (CRANKSHAFT POSITION SENSOR) ".

Is the inspection result normal? 

YES: GO TO 4.

NO: Replace crankshaft position sensor. Refer to "EXPLODED VIEW ".

Refer to "COMPONENT INSPECTION (CAMSHAFT POSITION SENSOR) ".

Is the inspection result normal? 

YES: GO TO 5.

NO: Replace malfunctioning camshaft position sensor. Refer to "EXPLODED VIEW ".

Check the following.

• Accumulation of debris to the signal plate of camshaft sprocket (INT)
• Chipping signal plate of camshaft sprocket (INT)

  Is the inspection result normal? 

  YES: GO TO 6.

  NO: Remove debris and clean the signal plate of camshaft sprocket (INT) or replace camshaft sprocket (INT). Refer to "EXPLODED VIEW ".

  Fig 2: Inspecting Camshaft Signal Plate

  Courtesy of NISSAN NORTH AMERICA, INC.

Check service records for any recent repairs that may cause timing chain misaligned.

Are there any service records that may cause timing chain misaligned? 

YES: Check timing chain installation. Refer to "EXPLODED VIEW ".

NO: GO TO 7.

Perform "INSPECTION OF CAMSHAFT SPROCKET (INT) OIL GROOVE ". Refer to "INSPECTION ".

Is the inspection result normal? 

YES: GO TO 8.

NO: Clean lubrication line.

Refer to "INTERMITTENT INCIDENT ".

: INSPECTION END