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).

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Open circuit

•  If there is no continuity, the circuit is open. Repair or replace the wiring harness.

―  Fuel pump unit terminal C and fuel pump relay terminal E

―  Fuel pump unit terminal D and body ground

Short circuit

•  If there is continuity, the circuit is shorted. Repair or replace the wiring harness.

―  Fuel pump unit terminal C and body ground

―  Fuel pump unit terminal D and power supply

Fuel Static Pressure Inspection

Note

•  The fuel static pressure inspection cannot be performed because the pressure regulator is integrated with the fuel pump unit.