Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. 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.
Select "DATA MONITOR" mode of "ENGINE" using CONSULT.

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

Monitor item

Condition

Value

(Approx.)

EOP SENSOR

Engine oil temperature: 80°C (176°F)
Selector lever: P or N position
Air conditioner switch: OFF
No load

Engine speed:

Idle

1, 450 mV or more

Engine speed:

2, 000 rpm

2, 850 mV or more

Without CONSULT

Check engine oil level. 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	Work Procedure
2	Exhaust front tube	Visual	No blocking No abnormal sounds	-
3	Oil pump	Removal and Installation
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.