DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module: Procedure

CHECK FOR DTC (ACTIVE TORQUE CONTROL 4WD SYSTEM)
1. Check for DTCs. Refer to DTC CHECK / CLEAR .
2. Record the output DTCs (active torque control 4WD 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
GO TO CAN COMMUNICATION SYSTEM. Refer to DIAGNOSTIC TROUBLE CODE CHART