PDA

View Full Version : RaceLogic Trac control wiring 1996+



jot_ie
13-03-05, 14:06
Right in the middle of fitting an rltc unit.
Matt H kindly supplied the pin outs for the ecu and abs.
Unfortunately The abs one doesnt seem to apply.
In the photos, which one is the abs ecu? The one with the orange plugs or the metal one.
Does anyone have the pinouts for the appropriate one. I need to get this done in the next few hours.
Any / all help much apreciated

98 Supra vvti tt 6 speed manual j-spec

John

LeeT
13-03-05, 14:34
its the metal ecu. cant help with the pinouts on a vvti though

jot_ie
13-03-05, 14:40
Thank leett
Its a start.
John

LeeT
13-03-05, 14:43
Thank leett
Its a start.
John
have you tried contacting matth. im sure there was a thread on this not so long ago too

LeeT
13-03-05, 14:46
here you go, read simonb's post
http://mkivsupra.net/vbb/showthread.php?t=33991&highlight=vvti+pinouts

jot_ie
13-03-05, 14:53
Thanks again leett
I think that may have soprted it
The common link between all the abs ecu's (jap, uk, vvti etc) seem to be the wire colours.
Will give it a go
John

jot_ie
14-03-05, 01:50
Quick update
Still in trouble regarding the abs connections.
I have two wheel speeds not registering
The connections seem good.
Could the pinouts be wrong.

This is what I Connected
Wheel Pin no ABS ECU Wire colour Rltc wire colour
FR A21 - 3 Red Red
FL A21 - 8 White Yellow
RR A20 - 10 Blue Blue
RL A20 - 22 Purple Green

The pin numbering system is what I could find from previous threads re vvti abs ecu's. However the pin count does not match the abs unit I have, (see previous pics), although the wire colours do.

At the moment, the yellow and green rltc wires are not picking up any wheel signals at all.


Approaching insanity and blissfull oblivion
John

merckx
14-03-05, 08:41
Is it possible to use a multimeter on the ABS wires and spin each wheel in turn to check for the four wires?

The RLTC manual says I should be measuring resistance, can this be done?

Do you need the ignition on, should the multiplug be plugged in? .

Hope I can get mine done today. :innocent:

merckx
14-03-05, 10:07
:)

jot_ie
14-03-05, 12:29
Merckx
A small bit of advice Matt H gave me.
Jack the car up (axle stands required) spin the wheels and probe the connections of the abs system. What to probe with I dont know. A multimetre maybe? So you are on the right track. I dont know if ignition should be on etc......
I dont have either axle stands or a multimetre and my driveway is on a large gradient. Was hoping someone, somewhere may have the correct pinouts.
John

Ian C
14-03-05, 13:09
I've been wrestling with this and I think I've finally got the right pins/wires, just got to wire them up now ;) That piccy looks like my ABS ECU, a 26pin and a 12pin. If, on that picture, you start the pin numbering from top right and head leftwards, pin 3 on the 12 pin plug is indeed red. Pin 8 is 2nd from the right and it's white.

All the colours fit, as does the logical layout of the pins, so I'm confident it's correct.

-Ian

jot_ie
14-03-05, 13:30
Ian
Now I am really stumped.
As you say, all the colours match up.
I am confident all my connections are good.
Let me know how you get on
John

merckx
14-03-05, 13:45
I've been wrestling with this and I think I've finally got the right pins/wires, just got to wire them up now ;) That piccy looks like my ABS ECU, a 26pin and a 12pin. If, on that picture, you start the pin numbering from top right and head leftwards, pin 3 on the 12 pin plug is indeed red. Pin 8 is 2nd from the right and it's white.

All the colours fit, as does the logical layout of the pins, so I'm confident it's correct.

-Ian

Very helpful, I was expecting the pin numbers on the bottom row to follow round from the top. Didn't expect them to start from the right again!

I've also got the red and white wires. :D

On the 26 pin connector.Top row starting from right, pin 10 is blue/silver bands. Bottom row , pin 22 is purple/silver bands.

On the ECU my injector wires are slightly different, I checked the wires on the injectors themselves.

Can anyone confirm these are correct?

I get:

Injector 1 .. red/blue
.......... 2 .. blue/red
.......... 3 .. blue
.......... 4 .. red/white
.......... 5 .. red
.......... 6 .. black/red

Not sure about the rpm wire yet.

jot_ie
14-03-05, 14:30
Merckx
The enclosed pic is a 1998 vvti ecu with the wiring pinouts for the injectors, rpm and 12v. These work perfectly. I wired these on saturday and all work correctly.
I am at work all day, and cant help with the wire colours. I left all my other notes at home.
Hope this helps.
john

jot_ie
14-03-05, 15:01
Also you could try here
http://www.supras.nl/view.php?page=modsJZA61VVTi.htm
Its arnouts website.
Just be aware that the pin numbering system is backwards for each block
But the vvti pinouts and wire colours are correct, I think, for the corresponding locations.
Hope this helps some more.

Anyone got any more light to shed on the 98 abs ecu?

John

merckx
14-03-05, 16:19
Cheers John, very helpful. :thumbs:

jot_ie
14-03-05, 18:58
No problem Merckx
Guys
Just found this thread.
Some very usefull stuff here too.

http://www.mkivsupra.net/vbb/showthread.php?t=6732&highlight=vvti+abs+ecu

I have all the connections correct according to this.

I am starting to think I have a bad connection, otherwise the rltc box may be faulty. Is that a possibility.

John

jot_ie
14-03-05, 19:31
Also here

http://www.mkivsupra.net/vbb/showthread.php?t=7416&highlight=vvti+abs+ecu

This may be the most informative.
Check Pete's (Thor Racing) pics of a jap vvti abs ecu (reposted below.)
(Hope you dont mind me reposting them Pete)

The abs unit is the same as mine but the wiring seems to be to pins
1 and 3
and to pins
8 and 9
of the smaller 12 pin connector

That would make the following wiring incorrect.

This is what I Connected
Wheel Pin no ABS ECU Wire colour Rltc wire colour
FR A21 - 3 Red Red
FL A21 - 8 White Yellow
RR A20 - 10 Blue Blue
RL A20 - 22 Purple Green


God my head hurts

John

merckx
14-03-05, 20:12
John, I've just edited this after reading your post properly.

There are two connections on each of the two plugs, I jacked up the car this afternoon, spun the wheels and checked them with my multimeter.

You were correct the first time.

merckx
14-03-05, 21:18
ABS Connections VVTI

John, this just confirms what you originally thought about the ABS wires.

I've checked with my multimeter and they are correct. :eyebrows:

http://img212.exs.cx/img212/674/japvvtiabs13tx.jpg (http://www.imageshack.us)

http://img212.exs.cx/img212/2817/socket17bj.jpg (http://www.imageshack.us)

Small Plug
Pin 3 Red wire .......Front Right Wheel
Pin 8 White wire......Front Left Wheel

Large Plug
Pin 10 Blue Wire......Rear Right Wheel
Pin 22 Purple Wire....Rear Left Wheel



The pins that I've got for the injectors are different though, I've put what I got above what you thought.

These are on my Oct 97 VVTI, I would be surprised if they were different on your 98 car.
I checked the colours on the Injectors themselves to obtain this.

http://img78.exs.cx/img78/5471/98vvtiecupins7gr.jpg (http://www.imageshack.us)

jot_ie
14-03-05, 22:33
Merckx
Thats fantastic .
It seems I may have dodgy connections on two of my wheelspeed sensors, or else I have a dodgy rltc box.

I got totally confused when I saw Pete's pictures.
I looks like all four connections are going to the left hand connector.

I will check my connections the next dry evening.

Did you get your install and setup finished.
How did it go? All working properly without too many other hiccups I hope
Enjoy and safe driving.

John

merckx
14-03-05, 22:46
I haven't got it fitting yet, just wanted to check the wires first.

I jacked up each wheel in turn and got someone to spin the wheel, it doesn't have to rotate very quickly at all.

No need to have the ignition on.

I left the multiplugs plugged in, I grounded one end of the multimeter test leads on a good earth and then probed the other lead into the two plugs to check for the wires.

I was getting a reading of about 1400-1500 ohms for each wheels which was fluctuating as the wheel turned. :D

jot_ie
14-03-05, 22:59
Many thanks for your hard work. Testing the connections etc.

John

Ian C
15-03-05, 00:16
That all matches with what I've found out on my 1996 facelift non-vvti :thumbs: Hurrah, I'm just about in the position to wire it all up. Again :rolleyes:

Another pointer is that the sensor wires on the 12 pin plug go to a heavily shielded section of loom about 4" down from the plug (you'd have to cut away the loom sheathing to find it) and the sensor wires on the 26 pin plug are interwoven together.

If we all get out RLTC working I'm gonna poach this thread for a tech article :)

-Ian

jot_ie
15-03-05, 00:56
:thumbs:

Terminator
15-03-05, 01:04
What alot of effort. The ABS colours donít matter as long as you find the four wires; the 180 configuration drive will identify the wheel locations, that is why a dat from one car will not work in an other car.

jot_ie
15-03-05, 01:13
The whole purpose was to find those four wires for sure.

Btw, Terminator, I saved the original rltc dat file, for you, as shipped.
Will send it by email
John

Terminator
15-03-05, 01:15
Sorry very tired, not much sleep in the past 48 must have miss read.

merckx
15-03-05, 07:19
What alot of effort. The ABS colours donít matter as long as you find the four wires; the 180 configuration drive will identify the wheel locations, that is why a dat from one car will not work in an other car.

To be honest it only took me half an hour if that! :D

I realise you don't need to know which wire is for each wheel but I thought I would make a note anyhow because you never know when it could be useful. :eyebrows:

jot_ie
16-03-05, 00:50
Quick update
I checked my wiring.
The connectors I was using to tap in to the abs were giving trouble.
Every time I moved them another one failed the rltc diagnostics test.
So I spent this evening soldering them.
They now work perfectly.
The diagrams in the previous posts were 100% correct.
Done and dusted..........
Many thanks guys
John

Terminator
17-03-05, 19:19
I would never use connectors in a car on important mods, ICE may be as your car and you will be OK if they fail. The amount of vibration is too great to give you 100% guarantee of a perfect contact.

Solder and shrink = peace of mind.

jot_ie
18-03-05, 17:18
I wont anymore.
I was tinking along the lines of easy removal, when/if I decide to sell the car.
The guy in the motor factors recommended splice connectors. Foolproof says he.
Foolproof my ass says I.
Another lesson learned.
John

Terminator
19-03-05, 02:15
For relatively easy removal you want a Field Connector

merckx
20-03-05, 23:35
Got mine fitted aswell, very happy - Everything working fine. :D

jot_ie
24-03-05, 00:47
Glad to hear it Merckx
Have fun
John

Ian C
24-03-05, 14:51
All working on mine now as well, wired up to those pins :thumbs:

I can boot it through second gear, woohooo!

First gear it has an embolism trying to control the wheelspin lol

-Ian

jot_ie
24-03-05, 15:01
:friday:
Beers all round then.

SimonB
24-03-05, 18:31
All working on mine now as well, wired up to those pins :thumbs:

I can boot it through second gear, woohooo!

First gear it has an embolism trying to control the wheelspin lol

-Ian

Now you have another gadget to tinker with the settings on the laptop, should keep you occupied... :rtfm:

Ian C
25-03-05, 21:46
No chance - it works, I'm leaving well alone :)

-Ian