I've got a 750k dozer (Serial 1T0750KXCCE222024) with 2 VCU codes: 581.0 and 581.7. I cannot find a code list anywhere. Do these codes point to a specific sensor or circuit? Or do I need to just start continuity checking every wire on this machine? Will drive at "minimum" speed, like in limp mode. Any guidance appreciated.
Welcome to HEF cgrisso ! 581.00 - Speed control buttons input Transmission speed control switch (B34) voltage out of range high for maximum calibration value. 581.07 - Speed buttons stuck Transmission speed control switch (B34) has stuck button (signal voltage indicates button pressed at start-up).
Thanks! I'll start there.
Speed decrease button showed constant 81 ohms. Ordered a new switch after reading what redmack had done for a similar issue.