DTC Diagnosis Procedure

If DTC P0025 is displayed with DTC P0084 or P1084, first perform the trouble diagnosis for DTC P0084 or P1084.

Is applicable DTC detected?

YES

Perform the diagnosis of the applicable. Refer to DTC Index .

NO

GO TO 2.

1. Start engine.
2. Check that oil pressure warning lamp is not illuminated.

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Is oil pressure warning lamp illuminated?

YES

Refer to Inspection .

NO

GO TO 3.

Refer to Component Inspection (Echaust Valve Timing Control Solenoid Valve) .

Is the inspection result normal?

YES

GO TO 4.

NO

Replace malfunctioning exhaust valve timing control solenoid valve. Refer to Exploded View .

Refer to Component Inspection (Exhaust Valve Timing Control Position Sensor) .

Is the inspection result normal?

YES

GO TO 5.

NO

Replace malfunctioning exhaust valve timing control position sensor. Refer to Exploded View .

Refer to Component Inspection (Crankshaft Position Sensor) .

Is the inspection result normal?

YES

GO TO 6.

NO

Replace crankshaft position sensor. Refer to Exploded View .

Refer to Component Inspection (Camshaft Position Sensor) .

Is the inspection result normal?

YES

GO TO 7.

NO

Replace malfunctioning camshaft position sensor. Refer to Exploded View .

Check the following.

• Accumulation of debris to the signal plate of camshaft front end

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• Chipping signal plate of camshaft front end

Is the inspection result normal?

YES

GO TO 8.

NO

Remove debris and clean the signal plate of camshaft front 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

Check timing chain installation. Refer to Removal and Installation .

NO

GO TO 9.

Perform "Inspection of Camshaft Sprocket (EXT) Oil Groove". Refer to Inspection .

Is the inspection result normal?

YES

INSPECTION END

NO

Clean lubrication line.