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Check the fuel filter pressure switch itself (Refer to GROUP 13C - Fuel Filter - Fuel Filter Inspection ).
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Q.
Is the check result normal?
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Repair or replace the connector, or replace the fuel filter body.
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- Disconnect connector, and measure at harness side.
- Ignition switch: ON
- Voltage between terminal engine-ECU FFPS line and body earth.
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Q.
Is the check result normal?
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- Check output line for open/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 set?
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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 connector, and measure at harness side.
- Resistance between terminal earth 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 output 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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