Mike_Mac Posted April 10, 2008 Share Posted April 10, 2008 I recently installed a speedm8 speedo converter from here: http://www.ncs-systems.com/speedm8/index.php?action=show&man_id=13&model_id=256 It appeared to use all the same connections as the TRL unit and works fine. Due to it being wired in correctly, unlike the previous importer fitted cheapo unit, my active spoiler and progressive power steering now work as well. According to the manufacturer of this unit I need a seperate unit to delimit, which is currently sitting on my shelf. The only problem is during a test run this morning (Runway) I reached 128 GPS speed, 135-140 indicated, with no limiter cut-in? Another run confirmed this as well. The only thing that's in any way different from the norm is that my O/D button is currently not installed (waiting for a replacement), but I cannot see how that would affect limiter operation. While this could be a good thing I am still concerned because this should not be happening and I don't know if whatever's causing it might be having an effect elsewhere too. Can anyone think of any reasons why? Quote Link to comment Share on other sites More sharing options...
SteveR Posted April 10, 2008 Share Posted April 10, 2008 UK spec or Jap? UK spec - someone could havbe pulled the relevant fuse, I believe Jap spec - are you SURE there isn't already a delimiter fitted? Have a look at the wiring to the ECU (in the passenger footwell, in the 'angled' (not flat) bit; remove the side trim & attached kick panel so you can pull the carpet back; the ECU is under a big plastic cover that is held down with (2?) bolts.) Quote Link to comment Share on other sites More sharing options...
Mike_Mac Posted April 10, 2008 Author Share Posted April 10, 2008 UK spec or Jap? UK spec - someone could havbe pulled the relevant fuse, I believe Jap spec - are you SURE there isn't already a delimiter fitted? Have a look at the wiring to the ECU (in the passenger footwell, in the 'angled' (not flat) bit; remove the side trim & attached kick panel so you can pull the carpet back; the ECU is under a big plastic cover that is held down with (2?) bolts.)Jap Spec. All the wiring had been returned to stock when I removed the old converter. This was after I'd stripped out the interior as well while the new engine went in. However - I've now solved it. I dug into the wiring and ECU diagrams I have and found that the O/D switch has several speed inputs into the ECU. Luckily I have my old O/D switch, so I reconnected it temporarily and everything was back to normal. Removing the switch and its connector must have interruped the circuit that the limiter relies on, which was a surprise to me, as Toyota usually have redundant feeds in case of wiring faults etc. So, if anyone wants a really quick delimit then they can disconnect the blue connector that rests under the auto gear lever and presto! **Not that I'm genuinely advising anyone to do that, as I don't know what else that signal is used for and it could lead to problems. I am interested to find out if I'm the first one to discover this - although I doubt it very much.** Quote Link to comment Share on other sites More sharing options...
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