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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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- 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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- 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: No. 2 intake air temperature sensor
- Item 9: Accelerator pedal position sensor (main)
- Item 10: Accelerator pedal position sensor (sub)
- Item 13: Accelerator pedal position sensor (main) learned closed position
- Item 16: Exhaust gas recirculation valve position sensor
- Item 17: Exhaust gas recirculation valve target position
- Item 21: Fuel temperature sensor
- Item 43: No. 1 intake air temperature sensor
- Item 45: Throttle position sensor
- Item 46: Throttle position sensor learned closed position
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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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- 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?
|
|
- Check the turbocharging pressure (Refer to GROUP 15 -
On-vehicle
Service -
Turbocharger Supercharging Pressure Check ).
|
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Q.
Is the check result normal?
|
|
Repair or replace the failed item.
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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?
|
|
Repair or replace the failed item.
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Q.
Does trouble symptom persist?
|
|
The procedure is complete.
|
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|
|
- Refer to Actuator Test Reference Table .
- Item 19: Suction control valve
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Q.
Is the check result normal?
|
|
Replace the suction control valve. After replacing the suction control valve,
learn the supply pump (Refer to GROUP 00 -
Precautions Before Service -
What
The Common Rail Engine Learns ).
|
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|
- Check suction control valve itself (Refer to ).
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Q.
Is the check result normal?
|
|
Replace the suction control valve. After replacing the suction control valve,
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 .
- Item 63: Rail pressure sensor
- Item 64: Rail pressure target
|
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Q.
Are the check results normal?
|
|
- Replace the common-rail assembly.
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|
Q.
Does trouble symptom persist?
|
|
The procedure is complete.
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- Check the output waveforms on an oscilloscope (Refer to ).
|
|
Q.
Is the check result normal?
|
|
Proceed to the inspection procedure by diagnosis code for the abnormal waveform
(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?
|
|
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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- Check compression pressure (Refer to GROUP 11C -
On-vehicle Service -
Compression
Pressure Check ).
|
|
Q.
Is the check result normal?
|
|
Check and repair the engine itself.
|
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- Check injector itself (Refer to ).
|
|
Q.
Is the check result normal?
|
|
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?
|
|
Replace the engine-ECU. When the engine-ECU is replaced, write the chassis number
(Refer to GROUP 00 -
Precautions Before Service -
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 ).
After registering the injector identification code, the vehicle equipped with the closed type DPF carries
out the forcible DPF regeneration. (Refer to GROUP 17 -
Diesel Particulate Filter (DPF)
System -
Forcible DPF Regeneration ).
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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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