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There are testing procedures for relays and ohm readings but it differs for all makes. The easiest way is to swap out an identical relay on the vehicle and check to see if the pump comes on. I know that on Ford Rangers there are 3 that are the same ECC, fuel pump, and AC. Since I knew that the ac worked I moved the relay over to the fuel pump and got no response still, so I moved it over to the ECC and both it and the fuel pump worked so that told me that the ecc relay was bad and it in turn triggered the fuel pump relay to activate in series.
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Does a fuel pump relay change the voltage to a fuel pump?
No, the fuel pump relay engages and sends voltage to the fuel pump. The fuel pump requires 12 V DC to operate properly. A fuel pressure test will verify the condition of the fuel pump.
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Fuel Pump fuse, relay, fuel filter, and all connections. A fuel pressure test will verify a defective fuel pump, or if it is simply not running, and has current to it.Fuel Pump fuse, relay, fuel filter, and all connections. A fuel pressure test will verify a defective fuel pump, or if it is simply not running, and has current to it.
Where is the fuel pump fuse on 1994 BMW 525i and how can i test to see why my fuel pump won't work?
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How do you test the fuel pump relay on a 92 dodge shadow?
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How do you test the fuel pump relay on an 89 ford frobe?
casey,figure it out!!
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In order to test the fuel pump relay, you must check that the two control circuit terminals on the relay are not connected, using an ohmmeter. You must also test the power circuit terminals on the relay, in the same way.
