Diagnosis Procedure

1. Perform "INSPECTION MODE 5". Refer to "DESCRIPTION ".
2. Start engine.
3. Check oil pressure warning lamp and confirm it is not illuminated.

   Is oil pressure warning lamp illuminated? 

   YES: Go to "INSPECTION ".

   NO: GO TO 2.

   Fig 1: Identifying Oil Pressure Warning Lamp

   Courtesy of NISSAN NORTH AMERICA, INC.

Refer to "COMPONENT INSPECTION ".

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 ".

Is the inspection result normal? 

YES: GO TO 4.

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

Refer to "COMPONENT INSPECTION ".

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 on the signal plate of camshaft rear end
• Chipping signal plate of camshaft rear end

  Is the inspection result normal? 

  YES: GO TO 6.

  NO: Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to "EXPLODED VIEW ".

  Fig 2: Checking Signal Plate Of Camshaft For Chipping Or Debris

  Courtesy of NISSAN NORTH AMERICA, INC.

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.

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