How do I test a fuel pump relay with a multimeter?

How do I test a fuel pump relay with a multimeter?

Set your digital multimeter to the lowest range on the Ohms scale or set it to ‘continuity. ‘ Then, connect one lead to one of the power circuit pins, and connect the other lead to the other power terminal. Your meter should read infinite (OL, open load) resistance.

Where is the main relay on a 1992 Honda Accord?

Disconnect the battery and find the main relay. Typically, the main relay on a Honda Accord rests behind the dashboard to the right or left of the steering while with accessibility up under the dashboard or behind the steering column access or dash panel.

How do you tell if a relay is bad with a multimeter?

The only tool required to check a relay is a multimeter. With the relay removed from the fuse box, the multimeter set to measure DC voltage and the switch in the cab activated, first check to see if there are 12 volts at the 85 position in the fuse box where the relay plugs in (or wherever the relay is located).

How can you tell if the fuel pump relay is bad?

How to tell if fuel pump relay is bad (6 Signs)

1. Check Engine Light (CEL) Illuminated.
2. High Mileage.
3. Long Starting Time.
4. Engine Performance Issues – Stalling, Idling, Acceleration, Not Starting.
5. Car dies while driving.
6. Silent Fuel Pump Noise.
7. Park the car in safe and level ground.

How do u know if your fuel pump relay is bad?

Here are the symptoms of a bad or failing fuel pump relay

1. Engine stalls. One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls.
2. Engine does not start. Another symptom of a faulty fuel pump relay is an engine that does not start.
3. No noise from the fuel pump.

What does the main relay do on a Honda?

The main relay in a vehicle controls the fuel pump and supplies power to the injectors. Knowing how to test a Honda main relay can help you better pinpoint the cause when an electrical issue arises.

How do you test a hot start relay on a Honda?

If your Honda is suffering from hot start problems that affect cranking, this diagnostic test might be helpful, too. Consider printing it out to help you while you’re testing the relay. Here’s how to do it: Consult your owner’s manual or vehicle repair manual and remove the main relay.

What should I do if my fuel pump is not working?

Then check that there is continuity between the No. 5 terminal and No. 7 terminal of the main relay. If there is continuity, the relay is just fine. If the fuel pump still does not work, keep testing down the wiring harness toward the fuel pump.

How do I know if my main relay is bad?

There’s a pretty simple way to tell if your main relay is affected. Simply turn on the vehicle and see if it continues to run. If so, the main relay is okay. Should the engine shut off, the main relay could be impacted.