DTC U1002: Lost Communication with Gateway Module (Sensor Bus); DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor [03/2014 - ]: Description

The driving support ECU assembly will store a DTC when no signals can be received from the millimeter wave radar sensor assembly.
When the driving support ECU assembly receives a response signal from the millimeter wave radar sensor assembly connected to the sensor bus, the driving support ECU assembly recognizes and memorizes the millimeter wave radar sensor assembly. Based on this memorized data, the driving support ECU assembly monitors for malfunctions in the millimeter wave radar sensor assembly when communicating with the millimeter wave radar sensor assembly. If the driving support ECU assembly cannot receive response signals from the millimeter wave radar sensor assembly that has been memorized as that connected to the sensor bus, the driving support ECU assembly determines that a malfunction exists.

DTC No.	DTC Detection Condition	Trouble Area
U1002	Lost Communication with Gateway Module (Sensor Bus).	Open or short in sensor bus main line or connector Driving support ECU assembly Millimeter wave radar sensor assembly Power source circuit of millimeter wave radar sensor assembly Millimeter wave radar sensor assembly ground circuit
U0235	Lost Communication with Cruise Control Front Distance Range Sensor.	Open or short in sensor bus main line or connector Millimeter wave radar sensor assembly Power source circuit of millimeter wave radar sensor assembly Millimeter wave radar sensor assembly ground circuit