Fuel Pump: Testing and Inspection

Testing

WARNING: Do not smoke during the test. Keep open flame away from your work area.

If you suspect a problem with the fuel pump, check that the fuel pump actually runs; when it is ON, you will hear some noise if you hold your ear to the fuel fill port with the fuel fill cap removed. The fuel pump should run for two seconds when ignition switch is first turned on. If the fuel pump does not make noise, check as follows:
1. Remove the trunk floor.
2. Disconnect the 3P connector (C539).

CAUTION: Be sure to turn the ignition switch OFF before disconnecting the wires.




3. Connect the PGM-FI main relay 7P connector terminals No.4 and No.5 with a jumper wire.




4. Check that battery voltage is available between the fuel unit wire harness connector (harness side) connector terminal No.1 and body ground when the ignition switch is turned ON (II).
- If battery voltage is available, check the fuel pump ground. If the ground is OK, replace the fuel pump.
If there is no voltage, check the wire harness.