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- Oxygen sensor (front) connector check.
- Oxygen sensor 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 oxygen sensor.
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- Oxygen sensor (rear) connector check.
- Oxygen sensor 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 oxygen sensor (rear).
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- Disconnect engine-ECU connector, and connect special tool power plant ECU check harness (MB992110) to measure at connector for inspection.
- Ignition switch: "ON"
- Voltage between terminal engine-ECU OFLE line and body earth.
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Q.
Is the check result normal?
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- Check earthing 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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- Reconfirmation of diagnosis code.
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Q.
Is the diagnosis code stored?
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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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- Disconnect engine-ECU connector, and connect special tool power plant ECU check harness (MB992110) to measure at connector for inspection.
- Ignition switch: "ON"
- Voltage between terminal engine-ECU ORLE line and body earth.
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Q.
Is the check result normal?
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- Check earthing 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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