transmission temp light on what does that mean

Question

transmission high temp light came on, was not towing trailer,
was not in limp mode at the time.  Have been having low voltage input to PCM and goes into limp mode

Answer 1

Low voltage to the TCM will definitely set a transmission Hugh temperature code, the TCM relay is fused protected a open fuse for the TCM relay will turn on the transmission temperature light check the fuse for the TCM relay located in the engine fuse box