So my 2008 Z’s throw out bearing went out so I replaced it myself it’s a upgraded version this whole process took me awhile I’m barely learning but I install everything back in correctly and I’m stuck with this problem that my Z won’t start it has a loud click which is the starter I’ve replaced the starter, battery, terminals and checked all the ground wires and it still just clicks i took my code reader to find a code and the code P0603 came up but I found zero to irrelevant info and I’ve just been stuck with this click and my car not starting no one has this problem I’ve looked everywhere ig I’m the first as far as I’ve seen

ps*I have been hear a weird high pitch noise that I cannot pinpoint idk if it will help diagnose the problem or not

 

Sounds like your battery is dead but since you replaced it, next thing to check is the ground cable, the fender ground side if you haven’t.

 

ive already replaced the battery even got the new one tested and even tried jumping the new battery still nothing just that one click

 

Yeah, just noticed. Changed response above.

 

I just googled it and the code is something about the ecm memory .

 

You blew an ECM fuse. There are two. Check them both.

 

do you know exactly where they are located I’ve tried looking up where they are at and got nothing?

 

In the IPDM. Looks like #34 and #77.

https://fuse-box.info/nissan/nissan-...ses-and-relays

 

update I replaced the ecm relay and starter relay and fuse #34 was good and it’s still doing the same thing

 

Regards Gregrod007:
Have you tried putting the car in one of the higher gears and either rocking or pushing it to confirm the motor is turning over? There was a time when "push to start" had nothing to do with a button in the dash (LOL).

Peace,

 

And fuse #77?