Pre-Collision System

DTC U0100 Lost Communication with ECM/PCM "A"
DTC U0122 Lost Communication with Vehicle Dynamics Control Module
DTC U0146 Lost Communication with Gateway "A"
DTC U1101 Lost Communication with Distance Control ECU

DESCRIPTION

DTC Detection Condition:

The seat belt control ECU receives signals from the skid control ECU, gateway ECU, center airbag sensor assembly and distance control ECU via the CAN communication system.

The distance control ECU receives signals from the ECM via the CAN communication system.

HINT: When 2 or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harness of each ECU.

INSPECTION PROCEDURE
For diagnostic information relating to the CAN Communication System, please refer to the information provided at Information Bus; Testing and Inspection. Testing and Inspection