found out these resistors should have been factory installed on b44 units built after 96. just wondering if the b44 parameter got enabled by mistake. (after CLC battery failure)XI-3 also was used for MASS MEDICAL OPERATION. I assume your not thyssen which is y ur using freedom tool. The 57 fault is, as u said, generated by XI-3 or RCK input. it should be low when running high when not. the XI-1 and XI-7 failures generate 59 and 62 faults in b44 mode.