Jump to content
SAU Community

Recommended Posts

hi... im in the middle of wiring up my car and i screwed up... its a rb25det neo... i went to start the car... fuel pump charged up, starter motor cranked... and cranking and cranking... but no start... ive checked my spark and my injector wiring and its all correct... i then went to the computer and it smelt like the smell you dont like to smell near electrics... i opened it up and i found a diode or resistor to be had it... ive got another computer on the way but i want to know what caused it to let go... the number of the diode/resistor on the computer chip is D620... could anybody tell me what that diode is... or where can i get an electric diagram of the actual computer... if i worked out what pin fed this diode i could work out where i went wrong by using the ecu pinout... i cannot follow it back on the card because the card is multi layered or something like that....

thanks for your help

Link to comment
https://www.sau.com.au/forums/topic/131995-my-computer-shat-itself/
Share on other sites

yeh wheezy i didnt *gets in line for somebody to shoot me in the head*

oh well ive found another computer... ill make sure that i put a relay through for sure now... what size relay do i ask for when i get it??? 10 amp???

Providing your loom came with the eccs and ign relays which is should have, then you should have a spare green relay left over near the kick panel.

Use that, if its still there.

Otherwise go the wreckers and grab another one off a r31.

Edited by James_03
Providing your loom came with the eccs and ign relays which is should have, then you should have a spare green relay left over near the kick panel.

Use that, if its still there.

Otherwise go the wreckers and grab another one off a r31.

thanks for that ill do that...

does anyone know where i could find a electrical diagram for the actual computer or tell me what the diode # D620 connects directly to

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • That looks good, but I think you're going to need much beefier side skirts now.
    • They are daft and there's a reason it never caught on. Steering feel? We don't need no stinking steering feel!
    • I gotta pull you up on this. It's driving me crazy. A shutter is something that closes, like over a window or in a cmera. The word you want is shudder. That LSD is clearly f**ked. Take it to a diff shop and get it disassembled and examined by an expert. YOu might have plates welded together or something equally crazy.
    • Define "starting to fail". Wy not just rebuild them?
    • Check the Nistune doco. There are a few assumptions being made here that might not be valid. I will list the things that occur to me: Base map. Base map for what? Base map for Z32? Then the cranking pulse width is probably wrong for an RB25. The extra 500cc of capacity might well be enough to prevent it from catching. Base map for RB25? I don't think you can load one of those into a Z32. You have to just make the settings correct for an RB25 in the Z32 base map. That is either K or the TIM to get the pulsewidth right. Loom. You bought a loom for an RB. And you plugged it into a Z32 ECU. Did you make sure that any iwre differences were swapped. From memory, there's at least a couple. And as per the others, I would suggest making sure that the fuel pressure is correct while cranking and that the injectors are actually flowing as expected. They really must come out and go on the bench, unless you do find that you have messed up as per above points. I would also suggest watching in Nistune to make sure that everything is reading correctly. That the correct binary flags are raised at the right time (like the crank signal), that there's no stupid values in K or TIM. That you have not got mismatched firmware for the ECU and/or a wrong image loaded.
×
×
  • Create New...