Diagnostic Procedure

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

OK or NG 

• OK: GO TO 2.
• KG: Go to OIL PRESSURE CHECK .

Fig 1: Illuminating 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 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 Camshaft (Intake)

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

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

OK or NG 

• OK: Check timing chain installation. Refer to TIMING CHAIN .
• NG: GO TO 7.

Refer to INSPECTION AFTER REMOVAL .

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