Diagnosis Procedure
- CHECK OIL PRESSURE WARNING LAMP
- Start engine.
- Check that oil pressure warning lamp is not illuminated.
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 (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 ".
- CHECK CRANKSHAFT POSITION SENSOR
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 ".
- CHECK CAMSHAFT POSITION SENSOR
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 CAMSHAFT (INTAKE)
Check the following.
- Accumulation of debris on the signal plate of camshaft front end
- Chipping signal plate of camshaft front end
Courtesy of NISSAN NORTH AMERICA, INC.
Is the inspection result normal?
YES: GO TO 6.
NO: Remove debris and clean the signal plate of camshaft front end or replace camshaft. Refer to "EXPLODED VIEW " or "REMOVAL AND INSTALLATION ".
- 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
Perform "Inspection of Camshaft Sprocket (INT) Oil Groove". 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