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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.
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Q.
Is the check result normal?
Go to Step 3 .
Repair or replace the connector.
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Q.
Is the check result normal?
Go to Step 4 .
Repair or replace the connector.
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note |
Before checking harness, check intermediate connector A-131, and repair.
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- Check earthing line for damage.
Q.
Is the check result normal?
Go to Step 5 .
Repair the damaged harness wire.
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note |
Before checking harness, check intermediate connector A-131, and repair.
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- Check power supply line for damage.
Q.
Is the check result normal?
Go to Step 6 .
Repair the damaged harness wire.
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note |
Before checking harness, check intermediate connector A-131, and repair.
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- Check output line for damage.
Q.
Is the check result normal?
Go to Step 7 .
Repair the damaged harness wire.
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- Use special tool test harness (MB991658) to connect connector, and measure
at pick-up harness.
- Engine: Idling (after warning up)
- Voltage between terminal No. 2 and earth.
OK: 1.15 - 1.75 V
Q.
Is the check result normal?
Replace the engine-ECU. When the engine-ECU is replaced, write the chassis number
(Refer to GROUP 00 - 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 ).
Replace the common rail assembly and fuel injection tubes.
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