Fuel Pump Relay: Testing and Inspection

NOTE: The lock of the fuel pump relay will be easily broken when removing the relay from the bracket. Do not remove the relay from the bracket except when replacement is required. Perform "FUEL PUMP RELAY INSPECTION" before removing the relay.

Simulation Test
Carry out the "Fuel Pump Operation Inspection", "Fuel Pump Control Inspection".
- If not as specified, perform the further inspection for the fuel pump relay.

Continuity Inspection

NOTE: Perform the following test only when directed.

1. Disconnect the negative battery cable.




2. Disconnect the fuel pump relay connector (6-pin type connector: 4 terminal) located above the accelerator pedal.




3. Inspect for continuity between the fuel pump relay terminals using an ohmmeter.
- If not as specified, replace the fuel pump relay.
- If as specified but the Simulation Test is failed, perform the "Circuit Open/Short Inspection".

4. Connect the fuel pump relay connector.
5. Connect the negative battery cable.

Circuit Open/Short Inspection

Open circuit




- If there is no continuity, the circuit is open. Repair or replace the harness.
- Ground circuit (Fuel pump relay connector terminal B and PCM connector terminal 3N)
- Ground circuit (Fuel pump relay connector terminal C and fuel pump connector terminal B through common connector)




- Power circuit (Fuel pump relay connector terminal A or E and main relay connector terminal D)

Short circuit
- If there is continuity, the circuit is shorted. Repair or replace the harness.
- Fuel pump relay connector terminal B and PCM connector terminal 3N to ground.
- Fuel pump relay connector terminal C and fuel pump connector terminal B to ground.