There is one proximity switch needed to switch from partial load (0-70% gas pedal) to full load mode (70 -100%). From my point of view fail safe mode (broken wire f.e.) should always switch to full load mode (gear shifts at higher rpm). Means proximity switch is closed from 0-70%, open from 70 to 100%. I'll share a few documents of EST25 shift system in PN. You are talking about two switches. Where is 2nd located? Might be so-called low idle switch indicating gas pedal below 5%. System will no more allow upshifts in coast mode. Same type as partial/full load switch.