Traction control light at high RPM

[cdrazic93]

Originally Posted by stugray

It is not. The system uses ignition timing to reduce torque from the engine when the TCS system detects wheel slippage.
If there are any faults in the ignition system, TCS will NOT be operational.

and the dots are connected, thanks stu

[wizzo]

I think one parameter TCS uses is ignition timing, but its not the only one, another obvious one is the throttle itself

Originally Posted by stugray

It is not. The system uses ignition timing to reduce torque from the engine when the TCS system detects wheel slippage.
If there are any faults in the ignition system, TCS will NOT be operational.

[stugray]

Originally Posted by wizzo

I think one parameter TCS uses is ignition timing, but its not the only one, another obvious one is the throttle itself

TCS uses rear wheel speed sensors to detect slippage (difference between wheel sensor pulse frequency > some threshold) and then it will retard timing to reduce engine torque. It might also reduce throttle plate position, but that response would be much slower than timing.

For Vehicle Stability Control it uses a lot more inputs such as Steering wheel position, yaw rate, lateral acceleration, throttle input (intent), AND wheel speed sensors.
It will intervene in a VSC situation buy applying brakes to the appropriate wheel using the ABS system.

[wizzo]

Originally Posted by stugray

TCS uses rear wheel speed sensors to detect slippage (difference between wheel sensor pulse frequency > some threshold) and then it will retard timing to reduce engine torque. It might also reduce throttle plate position, but that response would be much slower than timing.

For Vehicle Stability Control it uses a lot more inputs such as Steering wheel position, yaw rate, lateral acceleration, throttle input (intent), AND wheel speed sensors.
It will intervene in a VSC situation buy applying brakes to the appropriate wheel using the ABS system.

Cool, thanks for the explanation Wasnt trying to act like a smart ass..

Im happy the car is running strong again, changing the coilpack wasnt too bad for anyone reading, was quite straight forward. Didnt have to lift the engine or anything, just move the ecu.