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- Refer to Data List Reference Table
.
- Item 16: EGR valve position sensor
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Q.
Is the check result normal?
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
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- Use special tool test harness(MB991658) to connect connector and measure at pick-up harness.
- Ignition switch: ON
- Voltage between terminal engine-ECU EGR5 line and body earth.
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Q.
Is the check result normal?
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- Disconnect engine-ECU harness, and connect special tool power plant ECU check harness (MB992291) to measure at connector for inspection.
- Ignition switch: ON
- Voltage between terminal EGR5 and body earth.
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Q.
Is the check result normal?
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![](../../../buttons/03btn001.png)
Repair or replace the connector, or check and repair harness between exhaust gas recirculation valve connector terminal and engine-ECU connector terminal EGR5.
- Check power supply line for open circuit and damage.
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- Check power supply line for short circuit.
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Q.
Is the check result normal?
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Repair or replace the connector, or repair the damaged harness wire.
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|
|
|
- Refer to Data List Reference Table
.
- Item 16: EGR valve position sensor
|
|
Q.
Is the check result normal?
|
|
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
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|
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- Disconnect connector, and measure at harness side.
- Ignition switch: ON
- Resistance between terminal engine-ECU EGRE line and body earth.
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OK: Continuity (2 Ω or less)
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Q.
Is the check result normal?
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- Check earthing line for damage.
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Q.
Is the check result normal?
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|
Repair or replace the connector, or 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 warming up)
- Voltage between terminal engine-ECU EGRP line and body earth.
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|
Q.
Is the check result normal?
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- Check output line for short circuit.
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Q.
Is the check result normal?
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Replace the exhaust gas recirculation valve.
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|
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Repair or replace the connector, or repair the damaged harness wire.
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|
|
|
- Disconnect engine-ECU harness, and connect special tool power plant ECU check harness (MB992291) to measure at connector for inspection.
- Engine: Idling (after warming up)
- Voltage between terminal EGRP and body earth.
|
|
Q.
Is the check result normal?
|
|
![](../../../buttons/03btn002.png)
Repair or replace the connector, or check and repair check harness between exhaust gas recirculation valve connector terminal and engine-ECU connector terminal EGRP.
- Check output line for open circuit and damage.
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