DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U1104: Lost Communication with Driving Support ECU [10/2013 - ]: Description

The ECM communicates several signals with each sensor and ECU via CAN communication.

If there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system are output.

DTC No.	DTC Detection Condition	Trouble Area
U0100	While the dynamic radar cruise control is either preparing for operation or operating, if the ECM continuously receives a communication cut off signal from the driving support ECU assembly for more than a specific amount of time, the ECM stores this DTC	Communication circuit ECM Driving support ECU assembly
U0100	While the dynamic radar cruise control is either preparing for operation or operating, if the ECM continuously receives a communication cut off signal from the skid control ECU (brake actuator assembly) for a certain amount of time, the ECM stores this DTC	Communication circuit ECM Skid control ECU (brake actuator assembly)
U0122	While dynamic radar cruise control is either preparing for operation or operating, if communication data from the skid control ECU (brake actuator assembly) is invalid for a certain amount of time, the ECM stores this DTC	Communication circuit Skid control ECU (brake actuator assembly) ECM
U0123	While the dynamic radar cruise control is either preparing for operation or operating, the ECM continuously receives a yaw rate sensor malfunction signal for a certain amount of time	Communication circuit Airbag senor assembly (yaw rate sensor) Driving support ECU assembly ECM
U0126	While the dynamic radar cruise control is either preparing for operation or operating, if the ECM continuously receives a steering sensor communication error signal for a certain amount of time, the driving support ECU assembly sends a signal to the ECM and the ECM stores this DTC	Communication circuit Steering angle sensor Driving support ECU assembly ECM
U1104	While dynamic radar cruise control is either preparing for operation or operating and engine switch is on (IG), communication between driving support ECU assembly and front millimeter wave radar sensor assembly, ECM or skid control ECU (brake actuator assembly) stops for 1 second or more	Driving support ECU assembly Communication circuit Millimeter wave radar sensor assembly ECM Skid control ECU (brake actuator assembly)