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- Disconnect connector, and measure at sensor side.
- Resistance between terminals.
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OK: 4.5 - 8.0 Ω (at 20°C)
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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 connector, and measure at harness side.
- Ignition switch: "ON"
- Voltage between terminal power supply line and body earth.
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Q.
Is the check result normal?
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Repair or replace the connector, or check intermediate connector, and repair if necessary. If intermediate connector is normal, check and repair harness between oxygen sensor (rear) connector terminal and engine control relay connector terminal.
- Check power supply line for open/short circuit.
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- Disconnect connector, and measure at harness side.
- Ignition switch: "ON"
- Voltage between terminal OHRL and body earth.
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Q.
Is the check result normal?
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Repair or replace the connector, or check intermediate connectors, and repair if necessary. If intermediate connectors are normal, check and repair harness between oxygen sensor (rear) connector terminal and engine-ECU connector terminal OHRL.
- Check earthing line for open/short circuit.
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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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- Check power supply 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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- Reconfirmation of diagnosis code.
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Q.
Is 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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