DTC U0102-63: Lost Communication with Transfer Case Control Module - Circuit/component protection time-out: Action

Refer to the appropriate system wiring diagrams and check the transfer case control module power and ground circuits for open circuit, high resistance
Using the manufacturer approved diagnostic system, perform a CAN network integrity test. Refer to the appropriate system wiring diagrams and check the high speed CAN bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance
Using the manufacturer approved diagnostic system, check the transfer case control module for related DTCs and refer to the relevant DTC index