This is what is going on this unit. In the up direction and only in the up. The 4th landing and the only landing the car washes out levels back into the fourth floor. Fault code im getting is aways the same 171 18. I know what you are thinking im clipping a lock. That was my first instinct. So I went thru all the locks, adjusted a couple, and checked my clearances. I got clearance for days. So anyway I to go run the car and no cha I jumped out the entire dg/cg circuit. Car is still doing it. I went thru the ST circuit. Replaced all relays. I set my meter up on ST when the car does gn it the voltage on ST goes from 110 down to 89. STA stays at 110v. On the print looking at the ST circuit the only different is U contact n0 9\5 and D contacts no 9/5.
I went to the up and down circuit. I transferred all the up components to the down one at a time make a run. Transferred all of the relays no chance.
