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Q.
Is any other diagnosis code than P1275 output?
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Inspection chart for diagnosis codes (Refer to ).
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- Check suction control valve itself (Refer to ).
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Q.
Is the check result normal?
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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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- After the supply pump assembly, learn the supply pump. (Refer
to GROUP 00 - Precautions Before Service - What The Common Rail Engine Learns ).
- After learning the supply pump, re-check the trouble symptoms.
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Q.
Does trouble symptom persist?
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- After replacing the common rail assembly and fuel injection tubes,
re-check the trouble symptoms.
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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 - 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 DPF carries
out the forcible DPF regeneration. (Refer to GROUP 17 - Emission Control - Diesel Particulate
Filter (DPF) System - Forcible DPF Regeneration ).
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