Damn. That's a good question. I can't find sh!t as far as when full or partial lock up occurs in the different modes.
With all the sensors it looks like there's a lot of variables and a lot AYC-ECU control/programming.
http://www.lancerregister.com/faq_g04.php
... and then there's this;
http://www.mitsubishi-motors.co.za/lancer/Models/EVOVIII_2005/Lancer_perf.asp
"In Tarmac mode, AWC is tuned to fully extract Super AYC's potential to make the car more responsive on dry surfaces. Super AYC and ACD control is feed-forward compensated for driver inputs to realise better straight-line speed and feedback compensated for car behaviour to improve straight-line stability. The result is that car behaviour is more predictable and corresponds to the driver's intentions and expectations instantly."
More front bias...
"In Gravel mode, AWC delivers the best balance between drive and steering traction - crucial on wet surfaces. Compared with Tarmac mode, Super AYC and ACD feed-back gain is increased to improve traction and stability, while Super AYC provides less turning assist, to deliver cornering characteristics appropriate on wet surfaces."
More rear bias...
"In Snow mode, AWC bias is tuned for greater stability and thus makes the vehicle more competitive over snow-covered surfaces. Super AYC and ACD control bias is tuned for greater stability than the Gravel mode, while Super AYC delivers an appropriate degree of turning assist."
More 50/50...
I'll keep looking.
With all the sensors it looks like there's a lot of variables and a lot AYC-ECU control/programming.
http://www.lancerregister.com/faq_g04.php
... and then there's this;
http://www.mitsubishi-motors.co.za/lancer/Models/EVOVIII_2005/Lancer_perf.asp
"In Tarmac mode, AWC is tuned to fully extract Super AYC's potential to make the car more responsive on dry surfaces. Super AYC and ACD control is feed-forward compensated for driver inputs to realise better straight-line speed and feedback compensated for car behaviour to improve straight-line stability. The result is that car behaviour is more predictable and corresponds to the driver's intentions and expectations instantly."
More front bias...
"In Gravel mode, AWC delivers the best balance between drive and steering traction - crucial on wet surfaces. Compared with Tarmac mode, Super AYC and ACD feed-back gain is increased to improve traction and stability, while Super AYC provides less turning assist, to deliver cornering characteristics appropriate on wet surfaces."
More rear bias...
"In Snow mode, AWC bias is tuned for greater stability and thus makes the vehicle more competitive over snow-covered surfaces. Super AYC and ACD control bias is tuned for greater stability than the Gravel mode, while Super AYC delivers an appropriate degree of turning assist."
More 50/50...
I'll keep looking.