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- Temporarily place the ignition switch in LOCK (OFF) position, and 10 seconds after that, place it in ON position again.
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Q.
Is the diagnosis code of P1603 stored?
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- Disconnect connector, and measure at harness side.
- Voltage between terminal BACK and body earth.
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Q.
Is the check result normal?
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Repair or replace the connector, or check and repair harness between the battery and engine-ECU connector terminal BACK.
- Check power supply line for open/short circuit.
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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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