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Q.
Is any other diagnosis code than P0171 set?
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Inspection chart for diagnosis code (Refer to ).
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- Data list reference table (Refer to ).
- Item 5: Intake air temperature sensor
- Item 6: Engine coolant temperature sensor
- Item 8: Manifold absolute pressure sensor
- Item 10: Air flow sensor
- Item BB: Barometric pressure 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. Inspection chart for diagnosis code (Refer to ).
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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- No. 1, No. 2, No. 3 and No. 4 injector connector check.
- Injector check (Refer to ).
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Q.
Is the check result normal?
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Repair or replace the connector, or replace the injector.
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- Check and repair harness between No. 1 injector connector terminal
and engine-ECU connector terminal INJ1.
- Check and repair harness between No. 2 injector connector terminal and engine-ECU
connector terminal INJ2.
- Check and repair harness between No. 3 injector connector terminal and engine-ECU
connector terminal INJ3.
- Check and repair harness between No. 4 injector connector terminal and engine-ECU
connector terminal INJ4.
- Check output line for damage.
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Q.
Are the check results normal?
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Repair or replace the connector, or repair the damaged harness wire.
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- Fuel pressure test (Refer to ).
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Q.
Is the check result normal?
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- Check for entry of foreign matter (water, diesel fuel, etc.) into fuel.
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Q.
Is the check result normal?
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- After replacing the injector, reconfirm whether the diagnosis code is set.
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Q.
Is the diagnosis code set?
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