My boss has a John Deere Dozer I.D. *1T0450JXLA0190551* It starts and runs but in Reverse it just stops and throws code TCU 522448.5, IIt has stored codes, SDM 96.3, TCU 2661.4, TCU 522444.4, TCU 522448.5, TCU 619.5, TCU 522449.5, TCU 522447.5, TCU 522450.6, ECU 91.9, ECU 637.7, ECU 636.10, ECU 1569.31, ECU 637.10, ECU 637.2, ECU 110.15, ECU 1347.7, ECU 157.17, SDM 609.9. I found some bare wires and repaired them right at TCU. My boss just serviced everything and new filters and I already replaced the brake solenoid and that didn't fix the issue. Any advice?
Welcome to HEF Keith ! 522448.05 is for the right reverse pump coil open. So you probably have a broken/rodent damaged wire to that coil, or the coil itself is open. Resistance of the coil as measured on pins 1 and 2 of the PCP should be 20.7 - 25.3 ohms.