Here are the steps on how to locate and check the fuel pump relay in your 1990 Subaru Legacy:
1. Open the hood of your car.
2. Locate the battery. It is located on the passenger side of the engine bay.
3. Remove the battery cover.
4. Look for a small, black box with a green connector. This is the fuel pump relay.
5. Check the fuel pump relay for power. You can do this by using a multimeter to test the voltage at the relay's terminals.
6. If there is no power to the fuel pump relay, then you will need to replace it.
Here are some additional tips on how to troubleshoot a no-start condition:
* Check the spark plugs and wires. Make sure that the spark plugs are properly gapped and that the wires are in good condition.
* Check the ignition coil. Make sure that the ignition coil is properly connected and that there is power to the coil.
* Check the distributor cap and rotor. Make sure that the distributor cap and rotor are in good condition and that the timing is correct.
* Check the fuel pressure. Make sure that the fuel pressure is within the manufacturer's specifications.
If you are unable to find and fix the problem yourself, then you will need to take your car to a qualified mechanic.
