DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:U0100,U0122,U0123,U0126,U0235,U1102 and U1104

DTC Code DTC Name
U0100 Lost Communication with ECM / PCM "A"
U0122 Lost Communication with Vehicle Dynamics Control Module
U0123 Lost Communication with Yaw Rate Sensor Module
U0126 Lost Communication with Steering Angle Sensor Module
U0235 Lost Communication with Cruise Control Front Distance Range Sensor
U1102 Lost Communication with Radar Sensor
U1104 Lost Communication with Driving Support ECU

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U0100

Lost Communication with ECM / PCM "A"

While the dynamic radar cruise control is either preparing for operation or operating, a communication stop between the ECM and skid control ECU or driving support ECU continues for 1 second or more.

  • Master cylinder solenoid (skid control ECU)

  • CAN communication system

  • Driving support ECU

  • ECM

U0122

Lost Communication with Vehicle Dynamics Control Module

While the dynamic radar cruise control is either preparing for operation or operating, a communication stop between the skid control ECU and driving support ECU continues for 1 second or more.

  • ECM

  • CAN communication system

  • Master cylinder solenoid (skid control ECU)

U0123

Lost Communication with Yaw Rate Sensor Module

While the dynamic radar cruise control is either preparing for operation or operating, a communication stop between the yaw rate sensor and driving support ECU continues for 1 second or more.

  • Yaw rate sensor

  • CAN communication system

  • ECM

U0126

Lost Communication with Steering Angle Sensor Module

While the dynamic radar cruise control is either preparing for operation or operating, a communication stop between the spiral with sensor cable sub-assembly and driving support ECU continues for 1 second or more.

  • Spiral with sensor cable sub-assembly

  • CAN communication system

  • ECM

U0235

Lost Communication with Cruise Control Front Distance Range Sensor

While the dynamic radar cruise control is either preparing for operation or operating, a communication stop between the millimeter wave radar sensor assembly and driving support ECU continues for 1 second or more.

  • Millimeter wave radar sensor assembly

  • CAN communication system

  • Driving support ECU

U1102

Lost Communication with Radar Sensor

While the dynamic radar cruise control is either preparing for operation or operating, a communication stop between the driving support ECU and millimeter wave radar sensor assembly continues for 1 second or more.

  • Millimeter wave radar sensor assembly

  • CAN communication system

  • Driving support ECU

U1104

Lost Communication with Driving Support ECU

While the dynamic radar cruise control is either preparing for operation or operating, a communication stop between the driving support ECU and ECM continues for 1 second or more.

  • ECM

  • CAN communication system

  • Driving support ECU

CAUTION / NOTICE / HINT

Tip:

This circuit uses CAN communication. Therefore, if there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system are output.

PROCEDURE

  1. CHECK CAN COMMUNICATION SYSTEM

    1. Select "Bus Check" from the "System Select" screen on the intelligent tester.

    2. Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter".

      OK

      CAN communication system DTCs are not output.

    Result

    Result

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click here

    NG

    GO TO CAN COMMUNICATION SYSTEM

    Click here