Lost Communication with ABS Control Module

[DaraBowser]

DTC Code UO121, 2006 CRD with CAN-bus. After serveral Wheel sensor replacements and wiring investigations, I replaced the ABS module with a Jeep OEM part. Runs and stops but no ABS, Speedo Ands tach are dead now as well. Suggestions?

 

[turblediesel]

Rear differential speed sensor bad?

 

[KJowner]

Have you checked the fuses since you swapped the module?
Also try swapping back, might not work if it's out of a later or earlier Jeep.