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Q.
Is any other diagnosis code than P0088 set?
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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.
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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- Use special tool test harness (MB991658) to connect connector, and measure at pick-up harness.
- Engine: Idling
- Connect the oscilloscope special patterns pickup to terminal suction control valve connector (SCV+ line) and body earth.
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OK: The waveform should show a pattern similar to the illustration of inspection procedure using an oscilloscope (Refer to ).
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Q.
Is the check result normal?
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Replace the suction control valve.
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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 the trouble symptom persist?
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