Chosen Solution

My car is a 2005 Scion tC (they didn’t have that option when I made the forum.) It does not crank when I turn the key. If I hook up jumper cables same thing. I went through tests to see what it may be. I removed the starter relay/fuse from the fuse box. I was able to put to wires in the fuse “plug” to bypass the starter relay/fuse and the car starts. I went ahead and got a new fuse/relay and when I put it in, the same thing happens. Doesn’t crank at all. I have a multimeter to test different wire connections. I am trying to figure out what the problem is. I think it is the ignition switch or the park/neutral safety switch. I am not sure if that is right or even how to test that. I am adding a picture of someone bypassing the starter relay/fuse for a Scion xD

Update (10/19/2018)

This is my fuse box, it is slightly different than the diagram you shared.

This image is a picture of how I can get the car to turn over and start. Like I said the fuse isn’t the issue (tested with a new one). That is however where the starter fuse is located. This is an automatic transmission. With that being said, which contacts should I jump to test the neutral switch? Update (10/23/2018) I tried these three combos for grounding the wires. I had no luck

This is what the connector and the wires look like

Something to note, I was able to get the car to try and start (the battery has been sitting and needs charged) by a combination of grounding the relay fuse as well as the first picture of me grounding the NSS connection. Pictures showing that

I only say that because that makes me assume the way I grounded the NSS worked that time because when I ground the Starter Relay it did start to work (like it does w/ the NSS normally.) With all that being said what else could be the issue? It seems to me that something is not relaying the message to the starter relay properly so it does not try to run (like I said I had tried a brand new starter relay and that didn’t change anything). What are your thoughts? @travisjfox @oldturkey03

@zsatt this is what your 2005 tC fuse box should look like.

To test your neutral switch (P1 for AT or C5 for MT) just apply the jumpers on the contacts of those switches. As you can see on the wiring diagram, that would close the circuit and should enable you to start your vehicle.

Hey, Zach. I think your neutral safety switch sounds like a likely guess. Without a wiring diagram it’ll be tough to tell you exactly what wires go where but by checking wires one place at a time I think I may be able to help you. First, can you tell me how many terminals are on the starter relay? And do you have an automatic or a manual transmission?

But a new fuse box they are cheap enough to

I was unplugging my amp and a cable shorted and when I tried to turn on my car, it didn’t turn on only the dashboard lights, the stereo didn’t turn on either, the windows didn’t go down either, and the cable could someone help me find out what it is?