FUEL PUMP UNIT INSPECTION[LF, L3]

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Continuity Inspection

1.  Remove the battery cover. (SeeBATTERY REMOVAL/INSTALLATION[LF, L3].)

2.  Disconnect the negative battery cable.

3.  Disconnect the fuel pump unit connector.

4.  Inspect for continuity between fuel pump unit terminals A—E.

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•  If there is continuity, perform the “Circuit Open/Short Inspection”.

•  If there is no continuity, replace the fuel pump.

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 harness.

―  Fuel pump unit terminal A and fuel pump relay terminal D

―  Fuel pump unit terminal E and body ground

Short circuit

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

―  Fuel pump unit terminal A and body ground

―  Fuel pump unit terminal E 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.