1. Remove the fuel pump relay switch.
2. Check the electrical circuit of the relay using an ohmmeter.
Measure the resistance between the terminals of the fuel pump relay switch.
If these conditions are not met, replace the relay.
3. Check relay operation.
Apply battery voltage to terminals "ST" And "E1" and using an ohmmeter, check for continuity between the terminals "+V" And "FP".
4. Install the relay.