Digi Dash - 180km/h de-limitation?

[Knight Rider]

Hello

I bought a digital Dashboard quite a long time ago about the Supra forum in America which I got from a member from New Zealand. From suprra girl.
This one:
http://www.knight-rider.privat.t-online.de/Digital%20Dash%20Umbau/Front-alone-01.jpg

I tested all functions first
http://www.knight-rider.privat.t-online.de/Digital%20Dash%20Umbau/DD-Test-01.jpg

Then I got down to take it in parts and rebuild it in work of some months.

It was ready on 5-6-2006
http://www.knight-rider.privat.t-online.de/Digital%20Dash%20Umbau/DD-compl-01.jpg

This is the first digital dashboard fully able to work
the first conversion from RHD => LHD
Many Supra guys in Germany can confirm this.

But I still have a problem
It is called 180 km/h limitation

[Knight Rider]

http://www.knight-rider.privat.t-online.de/Digital%20Dash%20Umbau/Drive.jpg

Here another picture from the passanger side during the journey
http://www.knight-rider.privat.t-online.de/Digital%20Dash%20Umbau/SEITE-DD.JPG

[Knight Rider]

Every time if I drive faster than 180 km/h, the displays stops at 180.

I must mention that I drive a German MKIII
and had installed an analogous speedo before
and there is no speed limit of 180 km at the German MKIII

[supradupra.com]

Is this my long lost relative?! :)

[Knight Rider]

I had to install the Speedo sensor for the digital Dashboard
this one:
http://www.knight-rider.privat.t-online.de/Digital%20Dash%20Umbau/speedo-2.jpg http://www.knight-rider.privat.t-online.de/Digital%20Dash%20Umbau/speedo-4.jpg

At first I thought that the limitation would be in the Speedo sensor

I therefore bought a function generator and an oscilloscope for me used from ebay

and does some test on my spare digi dash
See se pics in the attachments.

I hoped that the limitation would be in the Speedo Sensor.
Hoped unfortunately wrongly
So ein Mist!!

Now I know that the limitation on 180km/h is itself in the digi dash.
And therefore I know that no Delimiter can solve this problem.
No HKS SLD, no Thor Delimiter..

Can anybody of you help me?

[supradupra.com]

Can you send the dash pin out info over to me and I'll have a look. One of the guys here may already of done this to their imports.

My email is info@supradupra.com

[Knight Rider]

Can you send the dash pin out info over to me and I'll have a look. One of the guys here may already of done this to their imports.

My email is info@supradupra.com

Dash pin out info?

I have only a wiring diagramm for the digital dashboard or digital Meter unit.
Its for a 1G-GTE and 1JZ-GTE,
and I have a digi dash for a 7M-GTE.

There are only some differenses in the configuration of the speedo sensor.
The Pin configuration in the plug differs in one port

[supradupra.com]

That will do to have a look at, the wiring diagram. One of the 1jz guys must have delimited one before now??

[BONDY]

One of the 1jz guys must have delimited one before now??

We do it by converting it MPH Stu!! so it reads 180Mph, which seeing as this guy is in Germany and they use K's is not really of any use.

(well thats my useless post of the day :D)

[Kai]

Well, you might find this handy:

http://www.gwsoft.co.uk/jza70/digidashconversion/

[BONDY]

Well, you might find this handy:

http://www.gwsoft.co.uk/jza70/digidashconversion/

Thats exactly what i meant, i could have posted that link . . . BUT ITS TO PUT IT INTO MPH, THIS GUY LIVES IN GERMANY AND NEEDS KPH :banghead:

[supradupra.com]

Lol you guys..."slaps with trout"

What I'm hoping is the dash just sends a signal out to the ECU that says "too fast!" as obviously its the ecu that limits the speed.

Possibly this signal can be interupted.

[Penfold]

Lol you guys..."slaps with trout"

What I'm hoping is the dash just sends a signal out to the ECU that says "too fast!" as obviously its the ecu that limits the speed.

Possibly this signal can be interupted.

See! all we had to do is wait untill a grown up comes along!

[BONDY]

Lol you guys..."slaps with trout"


http://www.obsse.com/trouting01.gif


LOL I know what he wanted :D

[Kai]

Eh? Where did that post about the HKS SLD go?

[Sean]

Eh? Where did that post about the HKS SLD go?

Read the post

[supradupra.com]

Something smells like fish round here, who's that girls, she washed??

I just read the post properly for 6th time too and have understood it differently now.

The car is delimited so does go over 180 KPH yes?

Its just the display that stops dead at 180 KPH?

In which case the rom or eeprom in the dash (assuming it uses one) would need programing...eek!

working blind here comment on passtimes not required..

[BONDY]

Eh? Where did that post about the HKS SLD go?

are you on the same thread as us???

[Knight Rider]

Thats exactly what i meant, i could have posted that link . . . BUT ITS TO PUT IT INTO MPH, THIS GUY LIVES IN GERMANY AND NEEDS KPH :banghead:

Thanks BONDY;
thats right
I live in Germany and we need km/h not MPH.

----

Lol you guys..."slaps with trout"
What I'm hoping is the dash just sends a signal out to the ECU that says "too fast!" as obviously its the ecu that limits the speed.
Possibly this signal can be interupted.

Hey supradupra.com
bevore I installed the digi dash, I had an analogous dashboard:
http://www.knight-rider.privat.t-online.de/Innen-a.jpg

And in Germany we have no 180km/h limit.
I often driven more than 220 km/h and my analougus speedo also has shown this.

I have a M/T
So we have two signal for speed for our ECU.
And when I cut the one SPD line, which comes from the analougus speedo, then I can drive without problems.

At my super monitor which I have already haredwired long time ago I can read the errror of missing SDP signal. Thats all. I can nevertheless drive just the same as before. The ECU gets the other speed signal from the transmission.

And with my Digi Dash:
I do not have connected the SPD signal of the Digi to the ECU -I know it because I have haredwired the Digi -
I can drive 5000 upm, the engine is faster and normaly the Digi should display 200 km/h.
I can see how the tachometer rises (4000 - 5000 upm and more) at the Digi but the speedometer shows only 180 km/h

And this is exacly the same what I have done with my tests.

I have connected a function generator to the speed input of the Digi
- have replaced the speed sensor unit with that -
And then I have increased the frequency
But the display stopped at 180 km/h although I increased the frequency further
The ECU does not have influence on the signal

Only in the mkiii in which the Digi Dash was build regularly
the ECU are steered by the speed signal which comes out of the Digi Dash

[Knight Rider]

Something smells like fish round here, who's that girls, she washed??

I just read the post properly for 6th time too and have understood it differently now.

The car is delimited so does go over 180 KPH yes?

Its just the display that stops dead at 180 KPH?

In which case the rom or eeprom in the dash (assuming it uses one) would need programing...eek!

working blind here comment on passtimes not required..

German Supras have not installed the 180km/h limitation, so we need no speed delimiter.

Best case:
I hope it's only a switch or bridge..

worst case:
new programing any rom prom eprom eeprom... eek!

You can surely see from my post that I'm not stupid.
But at this point I reached my end.

[supradupra.com]

Thats how I understood it then, good we are on the same page!

I would suggest the electronics in the digital dash are not designed to regester above 180 KPH or MPH and the display locks down at this value.

Do you know what chips are in the dash, is it a hard written ROM or EEPROM at all that converts all the signals?

My thoughts are along the lines that the actuall signal processing would need to be "unlocked" to allow the dash to read higher than 180.

I widh we had circuit information regarding these instrument clusters!!

Without one infront of me to look at its not very easy! Looking at pictures of the speedo board I personally can't see anything that looks like an EEPROM or ROM so it may be a simple frequency to voltage convertor that locks down at a set output preventing the display rising higher than 180.

[Knight Rider]

I wish we had circuit information regarding these instrument clusters!!

me too