Jump to content
SAU Community

Recommended Posts

I was testing the volatge coming from my AFM on my r33 gtst s2 to see if its operating correctly by connecting a multi-meter to 2 of the 3 terminals, negative and positive. I incorrectly tried connecting it another way through the meter which caused the car to have a rough idle and then shutoff. Now it will not start at all. It cranks over and idles for a split second then shuts off. Ive checked all fuses that I know of and none are gone. Ive also reset the computer and this has achieved nothing. The care starts with the AFM disconnected but it has a rough idle. Any assistance would be greatly appreciated. Cheers.

Edited by thirtythree-II

Ouch :)

Sounds like you killed it. If it starts fine with no AFM (prolly in limp mode though) and not at all with it connected, you most likely have killed the AFM :(

Multimeter on the signal and ground wires should give you a reading (don't quote me on that lol) that reading is whats confusing the ECU, causing it to not start. Maybe its outputting 5v, and the ECU doesn't like it.

Maybe checking for error codes and testing with known good AFM gets my tick too.

The small voltages that are going on there (+5 volts) wont damage the loom wire.

A small arc when you were testing "could have though, damaged the AFM.

- I guess you could run 4 new test wires from ECU to AFM (just out the side of the bonnet, through the window) to test the loom.

- Borrow an AFM to test the AFM

I done a diagnostic test and it reported but no.12 afm problem.

I found power coming from the afm connector.

I will test the continuity of the afm signal sensor wire (no.27) and also the earth wire (no.26)

Are r33 s1 and s2 ECU identical with terminal pin connector layout????

there's continuity from both terminals no.26 & 27 to the AFM connector.

so it must be the AFM.... perhaps the AFM I tried form the wrecker was stuffed too.

I need to get my hands on a known working r33 s2 AFM.

tryed yet another AFM and car still didnt work.

It must be the ECU??????????

but why did the diagnostice test read no.12 afm errror.

is is the processor within the ECU for the AFM thats fried?????

anyone got a ECU for sale?

cheers for your help guys but 'buck' sorted me out.

i've got a happy 33 again.

I replaced the ecu and it started first thing.

what confuses me is that the diagnostic error code was no. 12 which is AFM error, but it was in fact the ECU????

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

    • Yea - I mean I've seen my fuel pump which is decades old and uh, while I'm not saying this with real knowledge... but I sure get the ick at using anything in the fuel system that produced the state of that pump. Many years ago I went through multiple pumps (and strainers) before I dropped the tank to clean it out with extreme violence. I'm talking the car would do maybe 50km before coming to a halt, which resulted in me cleaning out the filter with some brake cleaner and going on my way. None of my stuff ever looked like what came out of your fuel tank. I don't think I'd be happy with it unless every single component was replaced (or at least checked/cleaned/confirmed to be clean here).
    • I'm not going to recommend an EBC pad. I don't like them. Just about anything else would suit me better. I've been using Intima pads for a while now.
    • Agreed, and in particular the earth strap that should go from the subframe to the chassis but it often broken or left off. There is a section in the R32 workshop manual you can follow for troubleshooting if you don't see anything suspicious, and depending where you are (there is no location on your user profile) you should be able to get your hands on a second hand replacement unit still if needed
    • Yeah they mention as a R34 for 2.5 Turbo...but then again thos "small" were also for R34 by that different site. But i look into it and that 310mm EBC is for R34 GTT. And by those you linked the specs are the same 🙂    EDIT: I found these on one site here: DBA 4000 series T3 DBA42304S They are 310mm...and it says are for R34GTT...are there good? EDIT2: ok they have pads too.  What "color" should i get for street use? I dont want/need some noisy ones...(and if they are not that dusty that is good too)
    • Yeah, shame. Maybe  driver's carpet is available 🙏. I am waiting for both amayama and nangun to confirm.
×
×
  • Create New...