![]() ![]() That means for most cars you don’t need new keys or programming. It’s important to mention that what is meant by the ignition switch here is the connectors and mechanism behind the actual key switch. If you have to replace the ignition switch, it will usually cost you around $200 for parts and labor. Go back to the fuel pump relay, follow the wiring from the ignition switch pin, and see if you can find any damage. ![]() If it’s not, the ignition switch is faulty. Switch RUN/START.” Once you have found it, turn the ignition on and check if the current is coming to the fuse. Check the diagram you will find on the fuse box cover, and it should read “IG. So, the first thing you can do is find the fuel pump relay to the ignition switch fuse. If you don’t see any power, I will assume that you have already checked all the fuses and say either the wiring is faulty or the ignition switch is bad. Once you do, test that pin just like you did the ECM one, but only after you turn the ignition on. To check if the relay is getting an ignition switch signal, you need to check your car’s wiring diagram to figure out which pin you need to test. Without both, the electrical circuit isn’t closed, and the relay isn’t letting current through. In this case, for the fuel pump relay to work, it needs to get power from the ECM and a signal from the ignition switch. The fuel pump relay is a little more complicated than the average one. A weaker fuse will probably burn as soon as you start the car, and a stronger one will let voltage spikes go through and possibly fry other, more expensive components. Also, instead of looking at fuel pump-relay-specific fuses, you might as well check all of them while you are at it.Īnd make sure you replace the fuses with the correct rating to avoid damage to other components because the fuse didn’t fail for no reason. The fuse box is usually under the steering wheel, but it’s best to check your car’s owner’s manual to avoid wasting time. So before you start looking at wiring and the ECM, locate your car’s fuse box and check all of them. Now, if your car had some electrical issues before this, this is most likely the issue, but it doesn’t have to be the case. From the ignition switch to ECM, fuel pump, injectors, etc. There are often several fuses between the ECM and the fuel pump relay. However, figuring out the exact culprit is tricky, so let’s start with the easiest one. Causes & Fixes for No Power From the ECM to the Fuel Pump Relayįixing any of these issues isn’t difficult at all, but nevertheless, we will explain it. Other than that, you could have some blown fuses, the ignition switch might be bad, the fuse box corroded, or you have loose ground connections. That’s because getting no power from ECM to the fuel pump relay could indicate that the ECM is faulty, meaning it has failed or its connectors are corroded. It also means you have already started digging in hopes of finding the solution and that you have some car repair experience, so this won’t be too difficult to fix. Getting no power from ECM to the fuel pump relay means you are not going anywhere until you fix the issue. ![]()
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