Thread: D2a TC disable

Hi, there's no way to disable only the TC on none of them, on pre-facelifts the SLABS ECU disables the TC and degrades the other functions(ABS,EBD, HDC) if the ignition is turned on with locked diff, on facelifts to disable the TC you must simulate a fault for which the TC is disabled but there will be other functions affected too, the one which affects less other functions is that "throttle position signal failure" and for that you have to switch off the data link to C0504 -10, if you are not interested by the other ABS functions to work while the TC is disabled you have to simply brake the circuit on the return pump relay's feed from C0506 -15. In any scenario the 3 amigos will come on and the fault will be stored in the ECU memory. Though the facelift's ECU is built as to manage the TC and locked diff together why would you want to disable it completely? You can find the pinout in the Electrical library - connector views if you want to do that.

Why would you ant to turn it off?
The best way to stop the traction control would be front and rear lockers and lock the centre diff. The you get no difference in wheel speed and nothing to activate the traction control.

I agree, I certainly havent found a scenario where no ETC is better. Sand is just tyre pressures.

To do it, I suspect you would have to change to a pre-update compatible SLABS computer and then restart with CDL locked.

Originally Posted by Bohica

Why would you ant to turn it off?
The best way to stop the traction control would be front and rear lockers and lock the centre diff. The you get no difference in wheel speed and nothing to activate the traction control.

Guess what my TC still comes one while triple locked and don't ask me why that happens, happened on both my d2s one 99 model and now my 03 model and both have ashcroft Front and rear lockers,
its just an d2 thing, so i want to disable TC to spin up the 35s

Originally Posted by Kaaaiju

Guess what my TC still comes one while triple locked and don't ask me why that happens, happened on both my d2s one 99 model and now my 03 model and both have ashcroft Front and rear lockers,
its just an d2 thing, so i want to disable TC to spin up the 35s

That's odd, There can't be that much play in the drive shaft and as soon as the slack is taken up the TC ought to stop. I wonder what is going on. Short of rewriting the WABCO code nothing will disable just the TC. If you unplug one of the ABS cables, you get the three amigos and TC stops. So does Hill Descent and ABS Or pull the fuse for the WABCO. Easy enough to put the fuse back after playtime is over. People will comment of that is a really dumb thing to do. You'd end up with something like the drive train on a D1 with the mighty TD5.

Originally Posted by Kaaaiju

Guess what my TC still comes one while triple locked and don't ask me why that happens, happened on both my d2s one 99 model and now my 03 model and both have ashcroft Front and rear lockers,
its just an d2 thing, so i want to disable TC to spin up the 35s

It's a D2 thing if you have with more than 5% larger tyres that's why it happens cos the whole management is mixed up with huge tyres as the SLABS ECU's response was calibrated for the standard dimension tyres from factory.

Originally Posted by sierrafery

It's a D2 thing if you have with more than 5% larger tyres that's why it happens cos the whole management is mixed up with huge tyres as the SLABS ECU's response was calibrated for the standard dimension tyres from factory.

Is that because the engine revs do not match the wheel speed?

Originally Posted by Bohica

Is that because the engine revs do not match the wheel speed?

No, it's because the wheel speed doesn't match the wheel speed!

I.E left front speed doesn't match right front speed.
The bigger the tyre the quicker the ratios/percentages become disparate.