Diagnosis Procedure

CHECK OIL PRESSURE WARNING LAMP
1. Start engine.
2. Check oil pressure warning lamp and confirm it is not illuminated.
  
  Fig 1: Identifying Oil Pressure Warning Lamp
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Is oil pressure warning lamp illuminated?
  
  YES: Go to "INSPECTION ".
  
  NO: GO TO 2.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to "COMPONENT INSPECTION ".

Is the inspection result normal?

YES: GO TO 3.

NO: Replace intake valve timing control solenoid valve.
CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to "COMPONENT INSPECTION ".

Is the inspection result normal?

YES: GO TO 4.

NO: Replace crankshaft position sensor (POS).
CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to "COMPONENT INSPECTION ".

Is the inspection result normal?

YES: GO TO 5.

NO: Replace camshaft position sensor (PHASE).
CHECK CAMSHAFT (INTAKE)
Check the following.
- Accumulation of debris on the signal plate of camshaft (1) rear end
- Chipping signal plate of camshaft rear end
  
  Fig 2: Identifying Signal Plate Of Camshaft
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Is the inspection result normal?
  
  YES: GO TO 6.
  
  NO: Remove debris and clean the signal plate of camshaft rear end or replace camshaft.
CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misalignment.

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

YES: Check timing chain installation. Refer to "REMOVAL AND INSTALLATION ".

NO: GO TO 7.
CHECK LUBRICATION CIRCUIT
Refer to "INSPECTION ".

Is the inspection result normal?

YES: GO TO 8.

NO: Clean lubrication line.
CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".

INSPECTION END