Guest Barnsley-SR Posted May 25, 2006 Share Posted May 25, 2006 OK, tried fitting a HKS SLD to a 94' Supra TT (Jap) last night. We wired the white and yellow wires to the pink wire on pin 2 (SP1 - Vehicle Speed Sensor) and wired the black to earth. Now, we wired the red wire to pin 31 (+B - EFi Main Relay) Was that the mistake? Now, the car turns over but doesnt start and when you have tried to start the car and turn the ignition off and take the keys out, the ecu light and cat temp light are on really faint. They both go off if you pull one of the EFI main relay's out under the bonnet....... We have tried changing the EFI relays under the bonnet with no joy.... can anyone shed any light onto it? Link to comment Share on other sites More sharing options...
mikeyb10supra Posted May 25, 2006 Share Posted May 25, 2006 im not great with electrics but that sounds bad, and very pricey if you have shorted out parts of the ecu give matt H a pm im sure he could advise Link to comment Share on other sites More sharing options...
Alex Posted May 25, 2006 Share Posted May 25, 2006 Checked all fuses? Link to comment Share on other sites More sharing options...
Guest Barnsley-SR Posted May 25, 2006 Share Posted May 25, 2006 Oh and also the ECU light doenst come on with the ignition... I knows its daft, but we havent yet checked all the fuses, since it was dark and we were peeved off :| We will do that tonight when we have some light (After work ) Link to comment Share on other sites More sharing options...
michael Posted May 25, 2006 Share Posted May 25, 2006 Have you tried it with the SLD taken off again? Link to comment Share on other sites More sharing options...
Guest Barnsley-SR Posted May 25, 2006 Share Posted May 25, 2006 Yes mate, tried taking it off and putting everything back to how it was. Link to comment Share on other sites More sharing options...
Ian C Posted May 25, 2006 Share Posted May 25, 2006 It has the hallmarks of an earth fault. You really need to try your ECU in someone else's car. -Ian Link to comment Share on other sites More sharing options...
Lucifer Posted May 25, 2006 Share Posted May 25, 2006 If your ecu light is not coming on, but was before then the ECU has no pwer getting to it. Check:- 1. Main EFI Fuse in engine bay 2. Earthing points as suggested Link to comment Share on other sites More sharing options...
carl0s Posted May 25, 2006 Share Posted May 25, 2006 Jap Spec ECUs aren't that hard to find cheap i don't think.. Link to comment Share on other sites More sharing options...
Ian C Posted May 25, 2006 Share Posted May 25, 2006 They are quite hard to blow up though. Link to comment Share on other sites More sharing options...
uk-rich Posted May 25, 2006 Share Posted May 25, 2006 http://cgi.ebay.co.uk/supra-twin-turbo-ECU_W0QQitemZ4642894156QQcategoryZ10428QQrdZ1QQcmdZViewItem try here Link to comment Share on other sites More sharing options...
carl0s Posted May 25, 2006 Share Posted May 25, 2006 They are quite hard to blow up though. That's lucky Link to comment Share on other sites More sharing options...
Guest Barnsley-SR Posted May 25, 2006 Share Posted May 25, 2006 Thanks for the advice guys and the link (This supra is Auto though... ) We will check the fuses later and report back. Question though... does the ecu have to be bolted down to be earthed? I know on some other toyota's this is the case. If so, thats ok, because we bolted it down. Cant see where there would be a bad earth since we never touched any other wires? Thx Link to comment Share on other sites More sharing options...
flukey-lukey Posted May 25, 2006 Share Posted May 25, 2006 All Fuses In Engine Bay Are Fine...trying To Check Fuses In Drivers Door, But It Hasnt Got A Cover On It!!! Link to comment Share on other sites More sharing options...
Ian C Posted May 25, 2006 Share Posted May 25, 2006 Your ECU has at least three grounds, not including the sensor grounds, and I'm thinking at least one of these was tapped into for the SLD (power, ground, speed in, speed out)... -Ian Link to comment Share on other sites More sharing options...
Guest Usmann A Posted May 25, 2006 Share Posted May 25, 2006 The three grounds are at the inlet manifold AFAIR. Check the voltage at Pin31A on the ecu, also Pin 29 or 32 IIRC, on is 12V battery supply to the board, the other is a 12V output, to power a thing or two. I had a real issue when i though the EMS had blown turns out, it was a earth fault, and had too many components powered from the board. Ovb check the fuses,relays etc. I hope you guys get it sorted! Link to comment Share on other sites More sharing options...
flukey-lukey Posted May 25, 2006 Share Posted May 25, 2006 ok, ecu wiring back to as it was before attempting to hook up the SLD. checked all fuses (under bonnet and drivers footwell) and all relays (swapped about etc) still no joy MIL light (orange, right hand side of the steering wheel display) is on all the time very faint and cat temp light (red) on all the time very faint, even when keys are taken out of the ignition the lights stay on! car does turn over, but thats it...i could sit here all night doing that! please please please can someone enlighten me???? im getting morngy now because it won't work lol. And I have to have it running before saturday as its going for camber setting up!?!? thanks in advance, Luke ALSO, when key is switched to position 2 (for the warning light checks) the MIL light (orange) doesnt come on, it used to come on for a few secs then go out... Link to comment Share on other sites More sharing options...
Ian C Posted May 26, 2006 Share Posted May 26, 2006 Check the earth point on the intake manifold, as Usmann said. I had that one pop off once while driving and it didn't start again until I'd tracked the fault down. I also had the Cat temp sensor light light up dimly and my boost controller lights flickered, as well as a couple of other spurious issues. -Ian Link to comment Share on other sites More sharing options...
flukey-lukey Posted May 28, 2006 Share Posted May 28, 2006 OK! sorted it on friday evening!!! bit of a silly mistake really the big plug into the ECU with the bolt on it wasn't tightened up properly (barnsley-sr fault ) so the pins weren't connecting thus making my car tickover like a bitch!! thanks for all advice on this one Link to comment Share on other sites More sharing options...
carl0s Posted May 28, 2006 Share Posted May 28, 2006 phew Link to comment Share on other sites More sharing options...
flukey-lukey Posted May 28, 2006 Share Posted May 28, 2006 phew that was my reaction too Link to comment Share on other sites More sharing options...
carl0s Posted May 28, 2006 Share Posted May 28, 2006 You can go back to step one and fit the SLD now Link to comment Share on other sites More sharing options...
flukey-lukey Posted May 28, 2006 Share Posted May 28, 2006 LOL well here comes my other problem... fitted it correctly acording to the diagrams, went to test if it worked and it did...140 leptons and braked back down to 100 on the sliproad. but about half hour later it decided to limit at 112 again, and tried it again today with no luck i have a feeling its either faulty or the wrong type (mine is auto). Does the auto sld have more wires than the manual? my sld has 4 wires Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted May 28, 2006 Share Posted May 28, 2006 you say that, but mine worked sometimes then sometimes didnt....and it was a bad earth Link to comment Share on other sites More sharing options...
flukey-lukey Posted May 28, 2006 Share Posted May 28, 2006 ok, will double check earthing point.....again......i hate cars lol Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now