Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ENGINE OIL LEVEL
1. Turn ignition switch OFF.
2. Check engine oil level. Refer to Inspection .
Is the inspection result normal?

YES

GO TO 2.

NO

GO TO 4.

CHECK ENGINE OIL PRESSURE

With CONSULT

Turn ignition switch ON.
On CONSULT screen, select "ENGINE">>"Data Monitor".

Start the engine and check that "EOP SENSOR" changes, according to engine speeds.

Monitor item	Condition		Value
EOP SENSOR	Engine: After warming up Selector lever: P or N Air conditioner switch: OFF No load	Idle	1.570 - 1.900 V
		2, 000 rpm	1.610 - 2.120 V

Without CONSULT

Check engine oil pressure. Refer to Inspection .

Is the inspection result normal?

YES

GO TO 3.

Check oil pump. Refer to Removal and Installation .

CHECK EOP SENSOR
Check EOP sensor. Refer to Component Inspection .

Is the inspection result normal?

YES

INSPECTION END

NO

Repair or replace error-detected parts.
CHECK ENGINE OIL LEAKAGE
Check engine oil leakage. Refer to Inspection .

Is the inspection result normal?

YES

GO TO 5.

NO

Repair or replace error-detected parts.

CHECK CAUSE OF ENGINE OIL CONSUMPTION

Check the following item.

Step	Inspection item	Equipment	Standard	Reference
1	PCV valve	Inspection
2	Exhaust front tube	Visual	No blocking No abnormal sounds	--
3	Oil pump	Visual	No blocking No abnormal sounds	--
4	Piston Piston pin Piston ring	Piston to piston pin oil clearance Piston ring side clearance Piston ring end gap		Inspection
5	Cylinder block	Cylinder block top surface distortion Piston to cylinder bore clearance		Inspection

Repair or replace error-detected parts.