Transmission Control Module (TCM): Notes

The TCM controls the transmission internal components thus determining gear selection and shift pattern.

Fig 1: Identifying TCM

Courtesy of JAGUAR CARS, INC.

The TCM is located in the same housing as the engine control module (ECM) and is accessed in the same manner. With the two connectors unplugged the TCM may be withdrawn, complete with mounting bracket. The mounting bracket is secured to the TCM by 2 lock nuts.