General Category > Central Vehicle Electronics/ZFE/GM issues

ESA calibration not available on my ESA bike

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MikeSF:
Further to my previous post I have done further work on my 2006 K1200R in order to see if I can get the ESA working again. Rather than hand the bike over to the local BMW agent and pay £100+ per hour to investigate I decided to do the work myself. Unfortunately I was unable to get hold of a wiring diagram so decided to trace the wiring from the front and rear ESA units back to the ZFE controller. Attached are my findings. If anyone who has a fully functional K1200R (pre Hall Effect) and would like to advise the readings they have from the front connector of their ZFE it would be much appreciated. Whilst I haven't returned to the dealer yet to have the ESA re-calibrated I feel that the root cause of my problem was in fact the preload adjustment motor which was faulty.

Note: The preload position readings were taken with the suspension unit in the softest position and the reading for the preload motor relates to a second hand unit that I have fitted. The original motor only showed a resistance of 2.4ohms so I think it had burnt out. Hopefully the motor hasn't messed up the ZFE electronics. I will update this post once I have taken the bike back to the dealer to have it configured and calibrated which should be later this month or next.

MikeSF:
Update on my last post to show where to take the readings at each suspension unit rather than just the ZFE connector.

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