Information on the order of coaches (also known as “formation data”) can be found for your chosen connection by swiping in the SBB Mobile app or selecting train information in the timetable on SBB.ch.
The train information gives the sectors where coaches will stop, the order of coaches, the individual types of coaches (family coach, restaurant, bicycle storage space and wheelchair spaces), classes of coach (1st and 2nd class) and the direction of travel.
Via SBB Mobile:
In the timetable on SBB.ch: