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Q.
Is the diagnosis code set?
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Inspection chart for diagnosis code (Refer to ).
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Q.
Is the check result normal?
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Proceed to troubleshooting for improper idling (Refer to ).
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- Refer to Data List Reference Table .
- Item 5: Barometric pressure sensor
- Item 6: Manifold absolute pressure sensor
- Item 7: Engine coolant temperature sensor
- Item 8: EGR gas temperature sensor
- Item 9: Accelerator pedal position sensor (main)
- Item 10: Accelerator pedal position sensor (sub)
- Item 16: EGR valve position sensor
- Item 21: Fuel temperature sensor
- Item 43: Intake air temperature sensor
- Item 45: Throttle position sensor
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Q.
Are the check results normal?
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Perform the diagnosis code classified check procedure for the sensor that has shown an abnormal data value (Refer to Inspection Chart for Diagnosis Code ).
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- Refer to Actuator Test Reference Table .
- Item 15: Injector No. 1
- Item 16: Injector No. 2
- Item 17: Injector No. 3
- Item 18: Injector No. 4
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Q.
Are the check results normal?
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Check the injector system of the defective cylinder.
(Refer to Code No. P0201: No. 1 Injector Circuit Malfunction ). (Refer to Code No. P0202: No. 2 Injector Circuit Malfunction ). (Refer to Code No. P0203: No. 3 Injector Circuit Malfunction ). (Refer to Code No. P0204: No. 4 Injector Circuit Malfunction ).
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- Check injector itself (Refer to ).
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Q.
Is the check result normal?
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Replace the injector at the failed cylinder.
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- Check compression pressure (Refer to GROUP 11E - On-vehicle Service - Compression Pressure Check ).
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Q.
Is the check result normal?
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- Check valve clearance (Refer to GROUP 11E - On-vehicle Service - Valve Clearance Check and Adjustment ).
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Q.
Is the check result normal?
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Adjust the valve clearance.
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Q.
Does the trouble symptom persist?
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions).
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