Diagnostic Test
- CHECK DTC PRIORITY
If DTC P0014 or P0024 is displayed with DTC P0078, P0084, P1078, or P1084, first perform the confirmation procedure (trouble diagnosis) for DTC P0078, P0084, P1078, or P1084.
Is applicable DTC detected?
YES
Perform diagnosis of applicable.
- DTC P0078: Refer to DTC LOGIC .
- DTC P0084: Refer to DTC LOGIC .
- DTC P1078: Refer to DTC DESCRIPTION .
- DTC P1084: Refer to DTC DESCRIPTION .
NO
GO TO STEP 2 .
- CHECK ENGINE OIL PRESSURE WARNING LAMP
Is engine oil pressure warning lamp illuminated?
YES
Proceed to INSPECTION .
NO
GO TO STEP 3 .
- CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE
Check exhaust valve timing control solenoid valve. Refer to COMPONENT INSPECTION (EXHAUST VALVE TIMING CONTROL SOLENOID VALVE) .
Is the inspection result normal?
YES
GO TO STEP 4 .
NO
Replace malfunctioning exhaust valve timing control solenoid valve. Refer to EXPLODED VIEW .
- CHECK EXHAUST VALVE TIMING CONTROL POSITION SENSOR
Check exhaust valve timing control position sensor. Refer to COMPONENT INSPECTION (EXHAUST VALVE TIMING CONTROL POSITION SENSOR) .
Is the inspection result normal?
YES
GO TO STEP 5 .
NO
Replace malfunctioning exhaust valve timing control position sensor. Refer to EXPLODED VIEW .
- CHECK CRANKSHAFT POSITION SENSOR
Check crankshaft position sensor. Refer to COMPONENT INSPECTION (CRANKSHAFT POSITION SENSOR) .
Is the inspection result normal?
YES
GO TO STEP 6 .
NO
Replace crankshaft position sensor. Refer to EXPLODED VIEW .
- CHECK CAMSHAFT POSITION SENSOR
Check camshaft position sensor. Refer to COMPONENT INSPECTION (CAMSHAFT POSITION SENSOR) .
Is the inspection result normal?
YES
GO TO STEP 7 .
NO
Replace malfunctioning camshaft position sensor. Refer to EXPLODED VIEW .
- CHECK CAMSHAFT (EXH)
Check the following.
- Accumulation of debris on the signal plate of camshaft rear end
- Chipping signal plate of camshaft rear end
Is the inspection result normal?
YES
GO TO STEP 8 .
NO
Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to REMOVAL AND INSTALLATION .
- Accumulation of debris on the signal plate of camshaft rear end
- 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 REMOVAL AND INSTALLATION .
NO
GO TO STEP 9 .
- CHECK LUBRICATION CIRCUIT
Perform "Inspection of Camshaft Sprocket (EXT) Oil Groove". Refer to INSPECTION AFTER INSTALLATION .
Is the inspection result normal?
YES
INSPECTION END
NO
Clean lubrication line.