help needed, to anyone who has fitted an rltc / or has exp with the abs wiring system

[Mike B]

Hi All,

 

I have been trawling round the net for a while trying to find a wiring diagram for the VVTI ABS system but I have not found anything to help. Aside getting a better understanding of the system I have an immediate fault that I want to fix...

 

My problem is that I have an abs warning on, but with the stock ecu replaced by syvecs there is no way to get an error code from the ecu to narrow the fault. Ryan did the install, and before I started stripping the old RLTC out there was no error light... So I am 99.9% that it was my removal that caused the issue.

 

There was only one wire that was connected to the system. The launch control button on the rotary dial switch was wired in to the stock system to cycle through the stock TC settings;

Snow mode - Standard - TC off - Standard (you know the one)

The stock TC button had been deleted and presumably the connector used for this function hijacked to be wired into the RLTC dial.

 

Foolishly I removed this extension wire to the RLTC controller before remembering which part of the loom it connected to and I am pretty sure that this is where my problem started, and where the solution lies. So I decided that a quick fix would be to get a new button and just plug it into the stock loom where the stock trac button would be...

 

But I have 4 stock loom connectors, none of which come close to fitting the Stock TC button switch, and I cannot find a wiring manual anywhere on the net...

 

I have some pics here of the systems, can you cast your eyes over them and give me any clues as to where to start? A wiring diagram would be ideal, but I have not been able to find one anywhere...

 

In the pics below you will see a shot of two ecu's,

- 1st pic shows the controller on top of the stereo cage, heater controls?

- 2nd pic, screwed to the transmission tunnel is the main abs ecu, right, with the accellerometer sensor in the forground... This has some butchery from the loom, extensions of wires that have now been blanked

- the last pic shows three unused connectors; big white one (top), two smaller black (middle), and at the bottom you will see the female end of the tc control switch I have - it fits nothing! doh!

 

I need to understand how this all works,

- does the vvti have a different tc switch to everything else?

- is there a wiring diagram for abs that anyone has come across?

- does anyone know what these male loom end connectors are for?

 

...I've come to the end of what I can achieve on my own :-/

[Ian C]

See if this helps:

http://www.mkivsupra.net/vbb/showthread.php?70518-VVTi-Jap-Spec-RLTC-fitting&highlight=rltc+vvti

 

Lots of pics and pinouts discussed in that thread.

[Ian C]

Actually that's probably not too much use as you're after the Snow/Off button pinouts aren't you? I've had a strong coffee on an empty stomach and can't concentrate on anything at the moment sorry *bzzzT*

[Mike B]

Thanks for that Ian - yeah, I'd seen that thread already..

It shows the feeds back to the ecu for the wheel sensor speeds, but what I would ideally like is to find either a full wiring diagram for it (had a good trawl through supraforums - nothing that looked like mine) similar to the ones we have for the main ecu's..

There seem to be a lot of different abs ecu varients.. What I need to solve in my case is the wires used to cycle through the abs mode choice, or the wires that plug into the trac control switch..

 

I thought I'd plug that freshly bought trac switch in to one of the empty loom connectors and it would be an instant solve...

not so... it doesn't fit any of the connectors back there at all...

:-(

 

...if only I had paid more attention when i removed the RLTC unit... doh!

[Mike B]

Actually that's probably not too much use as you're after the Snow/Off button pinouts aren't you? I've had a strong coffee on an empty stomach and can't concentrate on anything at the moment sorry *bzzzT*

 

exactly!

that pesky loom end / switch interface

or the wires themselves, and how they work...

constant current that is broken, or on/off/on/off

 

if only life had a time machine like my mac ;-)