adithorp
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| posted on 5/7/07 at 01:40 PM |
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R1 EXUP resistor trick?
On mt '06R1 I finally got around to getting a resistor to fool the ECU into thinking the EXUP is still there. Which wires do you connect it to?
The information I've got is black/red to white/red but that didn't work . Still getting fault code 17.
Also found I'm getting code 42 - speed sensor and the service manual says the ECU fall back when this comes up is "fixes gear to top
gear"!? Whats that mean?
Didn't get this before but I've put a yellow box speedo healer in since I last checked.
Neither code goes off when I try to clear the memory but if they don't affect the running I'm not averse to putting a sticker over the
light.
Adrian
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adithorp
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| posted on 5/7/07 at 03:58 PM |
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Yeah, I've got that info but also been told that that gizmo doesn't work and the resistor does by someone. So I thought I'd try the
resistor (easy option) before getting a mate to make the gizmo (complicated option).
Also I've jacked the back wheels up and put it in gear to check the speedo reading and it worked and I could then clear code 42, so thats solved
untill it appears again if ever.
Adrian
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Coose
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| posted on 5/7/07 at 04:59 PM |
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The easy and reliable option is to buy an EXUP servomotor from eSkip and mount it under the dashboard, out of the way.
Job done! 
Spin 'er off Well...
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Bob C
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| posted on 5/7/07 at 07:47 PM |
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There's an in-between road..... I made a much simpler circuit to pretend to be an exup. On the forum jimgiblett got the prorotype & it
worked fine out of the box; smart51 made one but had trouble making it work & we changed some components slightly. That's the version
I've got on mine - working fine. The circuit is here
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=exup.GIF
and a photo of mine (includes a fuel tank fooling resistor) is shown below.
My car is a '98 but Jim's is an 03 so I reckon the 06 should work the same.
http://freespace.virgin.net/bob.carter/images/exupcct.jpg
weighs a bit less than a redundant exup....
Bob
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adithorp
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| posted on 5/7/07 at 08:59 PM |
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Cheers Bob. That looks a bit simpler than the gizmo I've got the diagram for. Do you just do away with the blue 5v wire?
I'm planning to wire the fuel level wire into my tank sender using a parallel resistor to get the range right. Think it can be done? Just need
to get my old books out to remember how to work it out.
Adrian
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Coose
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| posted on 5/7/07 at 09:00 PM |
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quote:
Originally posted by Bob C
weighs a bit less than a redundant exup....
Bob
But then most would go and fit 15" wheels, which would negate the redundant EXUP servo about 20-fold! 
Spin 'er off Well...
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Bob C
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| posted on 5/7/07 at 09:58 PM |
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aye the 5V wire not needed with this circuit. You can probably see how it works - the cap voltage is pulled up or down by the motor drive signals, so
emulating the servo feedback pot output.
Bob
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adithorp
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| posted on 5/7/07 at 10:23 PM |
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Ahh... clear as mud!
I get the jist of it but the details are beyond me. Now where's that hammer!
Adrian
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adithorp
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| posted on 6/7/07 at 02:22 PM |
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Bob, I went to get the bits for the circuit today and had mixed results. Resistors and diodes were no problem but need more information about the
capacitor (type, voltage, load, etc) and they couldn't make any sence of the BC847.
I tried Maplin ("cant give advice mate cos then its our fault when it don't work" and RS Components in Stockport ("technical
are on lunch and won't be back for hours". I got the feeling they weren't interested but I don't know enough about these
things either so couldn't shed any light on it.
Adrian
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Bob C
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| posted on 6/7/07 at 02:38 PM |
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BC 847 - try a BC 547 - almost any general purpose small signal npn transistor will do. For the cap I used an aluminium electrolytic, anything from
16V upwards will do
[Edited on 6/7/07 by Bob C]
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adithorp
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| posted on 9/7/07 at 04:54 PM |
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Made up the box of tricks today and even with my wee poor soldering skills it works. No more warning light! Bob, I owe you a pint!
Adrian
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Bob C
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| posted on 10/7/07 at 09:43 AM |
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That's good - it's so easy to get, even a simple circuit like this wrong in the build.
I potted mine in hotmelt glue at the weekend - maybe I should post a pic - otherwise the copper vero tracks corrode away in time (should take about 6
years......)
Bob
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