Fuel Pump: Testing and Inspection

Jumper Installation:

QUICK CHECK
- Check that the battery voltage is above 12 volts.
- Disconnect the cable from the negative (-) terminal of the battery.

CAUTION: Work must be started after approx. 90 seconds or longer from the time the ignition switch is turned to the "LOCK" position and the negative (-) terminal cable is disconnected from the battery.


- Using a jumper wire, connect terminals + B and FP of the check connector.
- Turn the ignition switch ON.

NOTICE: Do not start the engine.

Checking For Fuel Pressure:

- Check that there is pressure in the hose from the fuel filter.

HINT: At this time, you will hear fuel return noise.

- Remove jumper wire.

FUEL PUMP INSPECTION
- Check that the battery voltage is above 12 volts.
- Disconnect the cable from the negative (-) terminal of the battery.

CAUTION: Work must be started after approx. 90 seconds or longer from the time the ignition switch is turned to the "LOCK" position and the negative (-) terminal cable is disconnected from the battery.

- Remove rear seat cushion.

Fuel Pump Cover:

- Remove floor service hole cove. Remove the four screws and service hole cover.
- Disconnect fuel pump & sender gauge connector.

Inspect Fuel Pump Resistance

Fuel Pump Resistance Check:

- Using an ohmmeter, measure the resistance between the terminals 4 and 5.

Resistance (Cold):
0.2 - 3.0 0

- If the resistance is not as specified, replace the fuel pump.

Inspect Fuel Pump Operation

Fuel Pump Operation Check:

- Connect the positive (+) lead from the battery to terminal 4 of the connector, and the negative (-) lead to terminal 5. Check that the fuel pump operates. If operation is not as specified, replace the fuel pump.

NOTE
^ These tests must be performed quickly (within 10 seconds) to prevent the coil from burning out.
^ Keep the fuel pump as far away from the battery as possible.
^ Always perform switching at the battery side.