DTC P0702-04: Transmission Control System Electrical - System internal failures: Action

WARNING: This page is about a different car, the 2018 Jaguar XF, 2017 Jaguar XF, and 2016 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.

Using the Jaguar Land Rover approved diagnostic equipment, check datalogger signal - ECU Power Supply Voltage (0xD112). Check the integrity of the transmission control module electrical connector. Check for correct latching, backed out terminals and corrosion. Refer to the appropriate system wiring diagrams and check the transmission control module power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary