DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:U0100, U0122, U0123, U0126, 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
U1104 Lost Communication with Driving Support ECU

DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
U0100 While the ignition switch is ON, a communication stop between the ECM and skid control ECU or driving support ECU continues for 1 second or more.

  • Hydraulic brake booster assembly (Skid control ECU)

  • CAN communication system

  • Driving support ECU

  • ECM
U0122 While the ignition switch is ON, a communication stop between the skid control ECU and driving support ECU continues for 1 second or more.

  • ECM

  • CAN communication system

  • Hydraulic brake booster assembly (Skid control ECU)
U0123 While the ignition switch is ON, 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 While the ignition switch is ON, a communication stop between the steering angle sensor and driving support ECU continues for 1 second or more.

  • Steering angle sensor

  • CAN communication system

  • ECM
U1104 While the ignition switch is ON, 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

Tech Tips

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".

      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output (for LHD with Entry and Start System) B
      CAN DTC is output (for LHD without Entry and Start System) C
      CAN DTC is output (for RHD with Entry and Start System) D
      CAN DTC is output (for RHD without Entry and Start System) E

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    D

    GO TO CAN COMMUNICATION SYSTEM Click here

    E

    GO TO CAN COMMUNICATION SYSTEM Click here