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Q.
Is any other diagnosis code than P1274 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 supply pump assembly. 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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- 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 assembly, 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 ).
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