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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 Inspection Procedure
7 ).
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- Refer to Data List Reference Table (Refer to ).
- Item 05: Barometric pressure sensor
- Item 06: Manifold absolute pressure sensor
- Item 07: Engine coolant temperature sensor
- Item 08: Intake air temperature sensor No. 2
- Item 09: Accelerator pedal position sensor (main)
- Item 10: Accelerator pedal position sensor (sub)
- Item 13: Accelerator pedal position sensor (main) learned closed position
- Item 16: EGR valve position
- Item 17: EGR valve target position
- Item 21: Fuel temperature sensor
- Item 43: Intake air temperature sensor No. 1
- Item 45: Throttle position sensor
- Item 46: Throttle position sensor learned closed position
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Q.
Is the check result 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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- Check injector identification code (Refer to GROUP 00 - Precautions
Before Service - Injector Identification code Registration Procedure ).
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Q.
Is the check result normal?
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Register the injector ID.
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- Carry out the supply pump correction learning (Refer to GROUP 00 - Precautions
Before Service - Supply Pump Correction Learning ).
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Q.
Does trouble symptom persist?
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The procedure is complete.
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- Carry out the small injection quantity learning procedure (Refer to GROUP
00 - Precautions Before Service - Small Injection Quantity Learning Procedure ).
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Q.
Does trouble symptom persist?
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The procedure is complete.
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Q.
Is the check result normal?
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Q.
Is the specified fuel being used?
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- Check for fuel leakage and clogging.
- Check fuel filter for clogging.
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Q.
Is the check result normal?
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Repair or replace the failed item.
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Q.
Does trouble symptom persist?
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The procedure is complete.
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- Item 19: Suction control value (Refer to ).
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Q.
Is the check result normal?
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Replace the supply pump. After replacing the supply pump, learn the supply pump
(Refer to GROUP 00 - Precautions Before Service - What The Common Rail Engine
Learns ).
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- Check suction control value itself (Refer to ).
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Q.
Is the check result normal?
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Replace the supply pump. After replacing the supply pump, learn the supply pump
(Refer to GROUP 00 - Precautions Before Service - What The Common Rail Engine
Learns ).
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- Refer to Data List Reference Table (Refer to ).
- Item 63: Fuel pressure
- Item 64: Fuel pressure target
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Q.
Is the check result normal?
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- Replace the common-rail assembly.
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Q.
Does trouble symptom persist?
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The procedure is complete.
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- Check the output waveforms on an oscilloscope (Refer to ).
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Q.
Is the check result normal?
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Proceed to the inspection procedure by diagnosis code for the abnormal waveform
(Refer to Inspection Chart for Diagnosis Code ).
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- Check compression pressure (Refer to GROUP 11A - On-vehicle Service - Compression
Pressure Check ).
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Q.
Is the check result normal?
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Check and repair the engine itself.
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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. After replacing the Injector, register
the injector identification code and learn fuel injection (Refer to GROUP 00 - Precautions
Before Service - What The Common Rail Engine Learns ).
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Q.
Does trouble symptom persist?
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Replace the engine-ECU. When the engine-ECU is replaced, write the chassis number
(Refer to GROUP 00 - How to Perform Chassis Number Writing ).
After replacing the engine-ECU, register the injector identification code and learn fuel injection (Refer
to GROUP 00 - Precautions Before Service - What The Common Rail Engine Learns ).
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunction ).
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