FUEL PUMP UNIT INSPECTION[L3]
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Continuity Inspection
1. Disconnect the negative battery cable.
2. Disconnect the fuel pump unit connector. (See FUEL PUMP UNIT REMOVAL/INSTALLATION[L3].)
3. Inspect for continuity between fuel pump unit terminals C—D.
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• If there is continuity, perform the Circuit Open/Short Inspection.
• If there is no continuity, replace the fuel pump unit.
Circuit Open/Short Inspection
1. Inspect the following wiring harnesses for an open or short circuit (Continuity check).
Open circuit
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• If there is no continuity, the circuit is open. Repair or replace the wiring harness.
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― Fuel pump unit terminal C and fuel pump relay terminal E
― Fuel pump unit terminal D and body ground
Short circuit
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• If there is continuity, the circuit is shorted. Repair or replace the wiring harness.
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― Fuel pump unit terminal C and body ground
― Fuel pump unit terminal D and power supply
Fuel Static Pressure Inspection
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Note
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• The fuel static pressure inspection cannot be performed because the pressure regulator is integrated with the fuel pump unit.