Diagnosis Procedure

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 NORTH AMERICA, INC.

OK or NG 

OK: GO TO 2.

NG: Go to , "INSPECTION ".

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO 3.

NG: Replace intake valve timing control solenoid valve. Refer to , "REMOVAL AND INSTALLATION ".

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO 4.

NG: Replace crankshaft position sensor (POS). Refer to , "DISASSEMBLY AND ASSEMBLY ".

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO 5.

NG: Replace camshaft position sensor (PHASE). Refer to , "REMOVAL AND INSTALLATION ".

Check the following.

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

Fig 2: Inspecting Camshaft (Intake)

Courtesy of NISSAN NORTH AMERICA, INC.

OK or NG 

OK: GO TO 6.

NG: Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to , "REMOVAL AND INSTALLATION ".

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 , "INSPECTION AFTER 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