Jump to content
SAU Community

Recommended Posts

Ok I'm getting a bit sick of not knowing which part of my electrics is actually faulty, so I was wondering if someone could help me test my ECU. I'd like to take my ECU out and plug it into another GTR (32 or 33) and see if it does all the same crap, which is not prime the fuel pump and not get a spark and hence doesn't start at all. If it works, then obviously it must be in my loom or immobiliser or something.

Or if anyone can let me know of a way to test it for certain, then please let me know. Thanks!

Link to comment
https://www.sau.com.au/forums/topic/120290-need-help-diagnosing-gtr-ecu/
Share on other sites

Ok I'm getting a bit sick of not knowing which part of my electrics is actually faulty, so I was wondering if someone could help me test my ECU. I'd like to take my ECU out and plug it into another GTR (32 or 33) and see if it does all the same crap, which is not prime the fuel pump and not get a spark and hence doesn't start at all. If it works, then obviously it must be in my loom or immobiliser or something.

Or if anyone can let me know of a way to test it for certain, then please let me know. Thanks!

You are welcome to try it on my car Jim, if you want to bring it to the hills area.

Just wanted to say an absolutely HUMUNGOUS THANK YOU to wrxhoon for helping me sort this out. Firstly my ECU wouldn't start his GTR, then to make sure nothing else was wrong we tested my car with his working ECU and it fired up easily. Now all I have to do is make sure the alternator isn't overcharging the battery so it doesn't fry the replacement.

Edit: New ECU going in car tonight after I pick it up!

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

    • I can get more photos of it here soon and I plan to make a thread detailing the process. I received the car this way and it sorely needs refinishing. That is probably the most appealing photo of it. Up close it is fading, cracked, and needs to be re-glued. Depending on their condition I'm on the fence between refinishing or making a new set.  Another angle hiding the pimples and razor pumps  
    • According to this thread the RS4V with build plate RC40 comes with the R200 diff @ 4.083 ratio as well (mine has said RC40 denotation). We may need to check if the axle stubs are the same pattern as well. The auto subframes have longer axles. However I think yours being a later Series 2 as well, we should have the same bolt pattern for the diff stubs. Unless your upgraded rear also has upgraded axles. Either way, I would not be opposed to pulling the covers to check so I can inspect that  fancy rear core  Also I don't have HICAS. I don't believe that should change things but I hope the people here with heaps more experience than me can correct me if I'm wrong   Let me know if you want to attempt to make this work and I can get some pictures of mine from under the car. 
    • It's not that straightforward. For example I have had this code because my ignitor/power transistor wires were unplugged. It knows something is wrong but has no idea what it means. If you want to actually diagnose this I recommend following the service manual flowchart for code 21. Ohm out the harness, coilpacks, inspect the ECU, etc. And again, it's entirely possible for there to be no problem at all but if you're running a different coilpack it'll trigger the code because it doesn't like what it sees.
    • If it (the code) wasn't still current, it should have gone away by itself by now. No, nothing it 10/10. But it is quite likely. Everything else to do with the ignition could still be responsible (which is wires and connectors). The car is an old piece of shit now, so all the wires and connectors are also old pieces of shit.
    • Lock me in mate, although I'm not sure if I'll be heading up from Goulburn or down from Sydney, either way, return will be back to Goulburn 
×
×
  • Create New...