DTC U3000-47: Control Module - Watchdog/safety micro controller failure: Action

Using the manufacturer approved diagnostic system, check datalogger signal - Main ECU Supply Voltage (0xD018). Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the transfer case control module power and ground circuits for open circuit, high resistance
Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new transfer case control module