spkennyuk
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Hmm, my ZF GT I am totally sure didn't use the EPB. The hold function was due to the drag on the torque converter. You could hear the EPB working when it did.
Obvs the 4200CC didn't have an EPB, but again used clutch drag for hill hold. Seems odd to overcomplicate things for the F1....
C
4200 still takes a signal from the abs sensor. The QP and Ghibli are both using electric motors as far as im aware to apply the epb and hill hold.
Another reason for ABS inputs on later systems is for MOT testing purposes. Some cars have a test function that checks if the front wheels are still and just the back wheels are moving so the system knows its in a test situation for testing the EPB is working correctly.