DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module: Procedure

1. Check for DTCs. Refer to DTC CHECK / CLEAR [03/2012 - ] .
2. Record the output DTCs (4WD control system).

   HINT: 

   When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.

NEXT → See step   2