FUEL PUMP UNIT INSPECTION [L3]

Continuity Inspection

Note

• Perform the following inspection only when directed.

1. Disconnect the negative battery cable.

2. Remove the service hole cover. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3].)

3. Disconnect the fuel pump unit connector.

4. Inspect for continuity between fuel pump unit connector terminals B and D.

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

• If as specified carry out the "Circuit Open/Short Inspection".

Circuit Open/Short Inspection

1. Inspect the following wiring harnesses for open or short circuit (continuity check).

Open circuit

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

- Fuel pump unit terminal D (harness-side) and body GND.

- Fuel pump relay terminal D (harness-side) and fuel pump unit terminal B (harness-side).

Short circuit

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

- Fuel pump unit terminal B (harness-side) and power supply.

- Fuel pump unit terminal B (harness-side) and body GND.

Fuel Pump Maximum/Hold Pressure Inspection

Note

• The fuel pump maximum/hold pressure inspection can not be performed, as the pressure regulator has been built in the fuel pump unit. See the fuel line pressure inspection for fuel pressure inspection. (See FUEL LINE PRESSURE INSPECTION [L3].)