Jump to content
SAU Community

Ecu Has No Power!

Lukas 33

By Lukas 33,
in Engines & Forced Induction

 Share

Recommended Posts

Lukas 33 Proficient

Lukas 33

Posted
Posted

Hey guys I was wondering if you can help me out. I am in the process of finishing my engine off. I just put in a 25/30 and im connecting everything back up and getting it ready for its first start. HOWEVER. There is a nice thick black wire with a yellow stripe (just underneath all the wiring near the washer bottle) and I am wondering what exactly it does and where I need to connect it to. Im guessing it is the earth for the block but I'm not 100% sure and also not 100% sure about where exactly to put it. I have also just put in a Microtech LT12S.....(bag it out if you wish but its what I was recommended due to the tuners in Townsville....)..anyways. I have just put the ECU in and when I went to set the injector correction the hand controller didnt come on. So I had a look down at the ecu and it appears to have nooooooooooo power. Could this be from the mysterious black wire which I have no idea where it goes? All help is appreciated :rofl:

Cheers :D

Link to comment
https://www.sau.com.au/forums/topic/277236-ecu-has-no-power/
Share on other sites
PM-R33 Grand Master

PM-R33

Posted
Posted

Hey man, you are correct. The yellow and black wire is an earth strap and it bolts to the right of the engine mount. (not really important where you mount it as long as it is a good earth point on the block).

I dont however think this is your problem as the ECU would still get power regardless. Check over all your wiring into the Microtech and use a test light to make sure the ECU is getting power into all the pins it is supposed to.

Lukas 33 Proficient

Lukas 33

Posted
  • Author
Posted

Cheers guys I have today off so I will go work on the car some more and connect up that lead. If still no power I think I will just check the ecu harness. If anyone would know off the top of their head.......is the pin number for the main battery power supply to the ecu pin number 58?

Cheers

Lukas 33 Proficient

Lukas 33

Posted
  • Author
Posted

Ok I went and got a fuse box translation and pulled out the Engine Control 10A fuse to see if it was blown. Yes it was blown. I figured I could have accidently done something so I put the 10A fuse from the hazard lights in there. I connected the battery back up and turned the key. The hand controller for the ECUs screen light up and immediately turned off again. Disconnected the battery to check the fuse I just put in and it was f**ked too :( . OH O. Is the ECU drawing too much power or do I have a nice short circuit happening somewhere?

Cheers

Lukas 33 Proficient

Lukas 33

Posted
  • Author
Posted

Ok that problem is all fix now :banana: I just disconnected everything under the bonnet one thing at a time till it stopped blowing fuses. It was the connector for the igniter. I just took it off and pluged it in again and it seemed fine. Weird issue. Im on the clutch problems now. But thats for another thread. Thanks guys ;)

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GabsReDeal
      R32 GTS (RB20DE) Injectors Replacement

      By GabsReDeal · Posted

      Back in January, I noticed my car felt noticeably weak. I had the injectors cleaned, which seemed to solve the problem -- until now. Recently, the car suddenly lost power again while driving. Suspecting the injectors, I brought it to the mechanic. He recommended replacing them entirely, saying the current ones were getting unreliable and fiddly to work with. I could not find a direct replacement for my current injectors. The closest match I found were 440cc injectors. This led me to look into the possibility of upgrading -- and of course, that would mean remapping the ECU. From my research I found: The OEM Part numbers are 16600-72L20 and 16600-72L21 Both the RB20DE and RB20DET use the same 270cc injectors. There are much better options out there over the old OEM injectors. Nistune could be a viable tuning option. While the RB20DE isn’t explicitly listed on their site, the ECU is essentially the same as the GTS-T version - just with a different map. The ECU code on mine is listed as supported. One concern is finding a tuner who works with Nistune. Aftermarket ECU like Haltech and Link, but this would be the most expensive choice (and possibly overkill for a mostly stock RB20DE) I admit that I am very new to the tuning scene and would appreciate any insight or recommendations regarding this.   These are some SAU links where I got some of my information from for reference: https://www.sau.com.au/forums/topic/380324-rb20de-injectors/ https://www.sau.com.au/forums/topic/477396-factory-270cc-injectors/  
    • sunsetR33
      Anyone know this frontpipe?

      By sunsetR33 · Posted

      The inspectors are not forensic by any means but if you forge your documents and/or badgings on vehicle parts and are found out, the consequences are just far bigger than if you just run illegal parts. And their job quite literally is to cross reference what parts you got installed and what your papers say you got. Something as silly as your suspension being 1mm too low will fail you. Nonetheless I asked if someone knew the damn pipe and I certainly did not ask for smartassery or underhanded comments, no idea why you need to be told this. Great way to waste both our time.
    • TurboTapin
      Anyone know this frontpipe?

      By TurboTapin · Posted

      As useful as you explaining what forgery is... But then again, I wasn't aware your inspectors were also forensic experts and inspect nameplates on each component to confirm everything is original. They must inspect roughly 3 cars a year at that rate. You're right though, my comment doesn't help you in anyway, so I'll go talk to my wall now. Cheers. 
    • sunsetR33
      Anyone know this frontpipe?

      By sunsetR33 · Posted

      Say that to the guy that is going to fail your inspection or tow your car for illegal exhaust modifications. If you have anything else useful to say, please go tell your wall.
    • TurboTapin
      Anyone know this frontpipe?

      By TurboTapin · Posted

      You must be fun at parties. 
×
×
  • Create New...