Diagnosis Procedure

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

   OK or NG 

   OK : GO TO 2.

   NG : Go to INSPECTION .

   Fig 1: Checking Oil Pressure Warning Lamp

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

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK : GO TO 3.

NG : Replace intake valve timing control solenoid valve.

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK : GO TO 4.

NG : Replace crankshaft position sensor (POS).

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK : GO TO 5.

NG : Replace camshaft position sensor (PHASE).

Check the following.

• Accumulation of debris to the signal plate of camshaft (1) rear end
• Chipping signal plate of camshaft rear end

  OK or NG 

  OK : GO TO 6.

  NG : Remove debris and clean the signal plate of camshaft rear end or replace camshaft.

  Fig 2: Identifying Signal Plate Of Camshaft

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

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 or No 

Yes : Check timing chain installation. Refer to TIMING CHAIN .

No : GO TO 7.

Refer to REMOVAL AND INSTALLATION .

OK or NG 

OK : GO TO 8.

NG : Clean lubrication line.

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

For Wiring Diagram, refer to "WIRING DIAGRAM " for CKP sensor (POS) and "WIRING DIAGRAM " for CMP sensor (PHASE).

INSPECTION END