U3000-47 Control Module - Watchdog/safety microcontroller failure: Action
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2017 Jaguar XJR, 2017 Jaguar XJ, 2016 Jaguar XJR, 2016 Jaguar XJ, and 2015 Jaguar XJR. 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 signals - Main ECU Supply Voltage (0xD018) - and - Main ECU Supply Voltage (0xD019). Refer to the electrical circuit diagrams and check the transfer case control module power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new transfer case control module