Diagnosis Procedure
- CHECK OIL PRESSURE WARNING LAMP
- Start engine.
- Check that oil pressure warning lamp is not illuminated.
Is oil pressure warning lamp illuminated?
YES: Go to INSPECTION .
NO: GO TO 2.
- CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE
Refer to COMPONENT INSPECTION .
Is the inspection result normal?
YES: GO TO 3.
NO: Replace malfunctioning exhaust valve timing control solenoid valve.
- CHECK EXHAUST VALVE TIMING CONTROL POSITION SENSOR
Refer to COMPONENT INSPECTION .
Is the inspection result normal?
YES: GO TO 4.
NO: Replace malfunctioning exhaust valve timing control position sensor.
- CHECK CRANKSHAFT POSITION SENSOR
Refer to COMPONENT INSPECTION .
Is the inspection result normal?
YES: GO TO 5.
NO: Replace crankshaft position sensor.
- CHECK CAMSHAFT POSITION SENSOR
Refer to COMPONENT INSPECTION .
Is the inspection result normal?
YES: GO TO 6.
NO: Replace malfunctioning camshaft position sensor.
- CHECK CAMSHAFT (EXH)
Check the following.
- Accumulation of debris to the signal plate of camshaft front end
- Chipping signal plate of camshaft front end
Is the inspection result normal?
YES: GO TO 7.
NO: Remove debris and clean the signal plate of camshaft front end or replace camshaft.
- CHECK TIMING CHAIN 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 DISASSEMBLY AND ASSEMBLY .
NO: GO TO 8.
- CHECK LUBRICATION CIRCUIT
Perform "Inspection of Camshaft Sprocket (EXT) Oil Groove". Refer to INSPECTION .
Is the inspection result normal?
YES: GO TO 9.
NO: Clean lubrication line.
- CHECK INTERMITTENT INCIDENT
Refer to INTERMITTENT INCIDENT .
INSPECTION END