Traction Control question

[Dan-]

Probably a stupid question but how does traction control work, is it done with sensors that relay to the ecu or does it have its own computer?​

 

[DanFreemanPhoto]

It's ESP for a start.

Think it's something to do with the wheel speed sensors. I would have though it had it's own unit onboard somewhere.

 

[mr.pink87]

ESP and ABS share an ECU. It's mounted on the hydroblock in the engine bay (passenger side bulkhead area). Sensors are wheel speed, steering angle, yaw sensor, brake pedal switch etc. ESP ECU is linked to the engine ECU to decrease throttle opening angle and vary spark advance.

 

[Dan-]

ESP and ABS share an ECU. It's mounted on the hydroblock in the engine bay (passenger side bulkhead area). Sensors are wheel speed, steering angle, yaw sensor, brake pedal switch etc. ESP ECU is linked to the engine ECU to decrease throttle opening angle and vary spark advance.

is the esp and abs ecu the bsi unit?

 

[mr.pink87]

No, that's the UCH. UCH is a gateway and ECU for various electric systems (window motors, wiper etc.). Then you have ECUs for the engine management, ABS or ABS and ESP, Airbag etc.

 

[syko6288]

http://en.m.wikipedia.org/wiki/Traction_control

 

[Dan-]

No, that's the UCH. UCH is a gateway and ECU for various electric systems (window motors, wiper etc.). Then you have ECUs for the engine management, ABS or ABS and ESP, Airbag etc.

But a traction control light being on could be the bsi unit?

 

[mr.pink87]

Could also be a fault in the TC/ESP system!? Proper diagnostic machine needed.

 

[Dan-]

Could also be a fault in the TC/ESP system!? Proper diagnostic machine needed.

Proper Diagnostic machine isn't reading a fault though

 

[mr.pink87]

Was it on a Renault Clip?

 

[Dan-]

Nope the mechanic said he need to check it on his friends Renault clip

 

[mr.pink87]

So it's not been on a proper diagnostic machine

 

[Dan-]

Ah right well the mechanic said hes going to check it with a Renault clip tonight or tomorrow

 

[Dan-]

Just spoke on the phone to the mechanic and it was the brake light switch that was causing the light to
Come on

 

[mr.pink87]

Common fault. May only need adjusting. Guide is somewhere on here afaik.

 

[Dan-]

All done now cheers for the help mate