G4+ Supra 2JZ traction control

[sama]

Hello guys, hope all are doing well with this massive virus that hurting all of us badly. I wanted to know if somebody has any experience what is needed to install the G4+ traction control system, not sure if it works with the stock ABS sensors or needs a new set to make it work.

Thanks a lot!

[Adamw]

Is it a supra plug-in ecu or something else?  You would typically already have rear wheel speed available from the gearbox sensor so you just need to add a front wheel.  If you have a plug-in ECU then the ABS signal will be too high frequency so you will need to either build a frequency divider circuit to bring it down to an acceptable level or fit some other separate toothed wheel for front wheel speed.

[sama]

Hi Adam, 

 

Sorry yes it's a plug-in G4+ so to use the front wheel speed sensors I connect to the OEM wheel sensors? Do you have details? 

Thanks!

[Adamw]

There is a conditioned square wave wheel speed signal available at the ABS ecu that I would tap into.  Pin 7 is the front right and pin 20 is the front left.

 

You will then have to build a small frequency divider circuit like this to connect to the ecu:

[sama]

Thanks Adam, will do so! 

[orlando bello]

Hello Adam where or what  website is the divider available. 

[Adamw]

7 hours ago, orlando bello said:

Hello Adam where or what  website is the divider available. 

Almost any electronics store should have a 4024, or ebay etc.  Over here our local jaycar stores (a bit like radioshack) sell them for like $1.50 each. 

Search for CD4024.  Heres an example:

https://www.mouser.com/ProductDetail/Texas-Instruments/CD4024BE?qs=sGAEpiMZZMtdY2G%2BSI3N4a%2FfUmOafsfmk1lx%2BAgrRBY%3D

 

 

[Scott33]

FYI you can use a 74HC393 which has two 4-bit counters in one package.  Saves space if you need all 4 wheel speeds.  In a TSSOP package, the board fits on the end of an AT04-12PA-BM* header, making for a compact addition to a wiring harness.

[Stuart mcharg]

Hey @Adamw, sorry to bring up old content.

We are currently trailing the same thing. Where did you find that wiring diagram and more to the point the raw signal(input from speed sensor) is that directly from the input to the abs ecu? 

 

 

[Adamw]

Yes the input to the 4024 chip would be one of the conditioned signals I highlighted in the pink box above that runs between the ABS and traction ecu's.

[Stuart mcharg]

9 hours ago, Adamw said:

Yes the input to the 4024 chip would be one of the conditioned signals I highlighted in the pink box above that runs between the ABS and traction ecu's.

Thanks Adam, I think that's our issue, no traction control from factory. The link doesn't seem to be able to pick up the frequency.