First off, fuel pump relays are used, to supply power to the fuel pump, to start your car.

Because, they need a lot of power to run, using a relay, seemed like the logical choice. Relays are basically all the same, in that they, enable a low amperage circuit, to switch on or off a higher amperage circuit.

Fuel Pump Relays - Supply Higher Power, Used By The Fuel Pump
Fuel Pump Relays – Supply Higher Power, Used By The Fuel Pump

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Fuel Pump Relay – Function – Failure – Testing Procedures

Automatic Shutdown (ASD) Relay – Function – Failure – Testing


BY DANNY BENDER