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DTC Diagnosis Procedure
1.INSPECTION START
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2.CHECK VTC POSITION
With M.U.T.-III SE
  1. Turn ignition switch ON.
  2. On the M.U.T.-III SE screen, select “ENGINE” >> “DATA MONITOR” >> “COOLANT TEMP/S”.
  3. Check that the “COOLANT TEMP/S” indication value is between −5°C (23°F) and 45°C (113°F).
  4. Start engine and wait at least 5 seconds.
  5. On the M.U.T.-III SE screen, select “ENGINE” >> “DATA MONITOR” >> “EXH/V TIM B1”.
  6. Check that the data monitor item indicates as follows:
    ItemValue (°CA)
    EXH/V TIM B110 ± 2
Is the inspection result normal?
Check intermittent incident. Refer to Intermittent IncidentIntermittent Incident.
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3.CHECK OIL PRESSURE WARNING LIGHT
  1. Start engine.
  2. Check that oil pressure warning light is not illuminated.
Is oil pressure warning light illuminated?
Refer to Inspection.
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4.CHECK EXHAUST VALVE TIMING INTERMEDIATE LOCK CONTROL SOLENOID VALVE
Perform Component Inspection of the exhaust valve timing intermediate lock control solenoid valve. Refer to Component Inspection.
Is the inspection result normal?
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Repair or replace error-detected parts.
 
5.CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE
Perform Component Inspection of the exhaust valve timing control solenoid valve. Refer to Component Inspection.
Is the inspection result normal?
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Repair or replace error-detected parts.
 
6.CHECK CRANKSHAFT POSITION SENSOR
Perform Component Inspection of the crankshaft position sensor. Refer to Component InspectionComponent Inspection (Crankshaft Position sensor).
Is the inspection result normal?
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Repair or replace error-detected parts.
 
7.CHECK EXHAUST CAMSHAFT POSITION SENSOR
Perform Component Inspection of the exhaust camshaft position sensor. Refer to Component Inspection.
Is the inspection result normal?
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Repair or replace error-detected parts.
 
8.CHECK CAMSHAFT (EXHAUST)
Check the following.
  1. Accumulation of debris on the signal plate of camshaft front end
  2. Chipping signal plate of camshaft front end
Is the inspection result normal?
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Remove debris and clean the signal plate of camshaft front end or replace camshaft. Refer to Removal and Installation.
 
9.CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misalignment.
Are there any service records that may cause timing chain misalignment?
Check timing chain installation. Refer to Removal and Installation.
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10.CHECK LUBRICATION CIRCUIT
Perform “Inspection of Camshaft Sprocket (EXHAUST) Oil Groove”. Refer to Inspection.
Is the inspection result normal?
Check intermittent incident. Refer to Intermittent IncidentIntermittent Incident.
Clean lubrication line.