DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:U0100, U0122, U0123, U0126, U1101

DTC Code DTC Name
U0100 Communication Stop from ECM to Distance Control ECU, VSC
U0122 Lost Communication with Vehicle Dynamics Control Module
U0123 Lost Communication with Yaw Rate Sensor Module
U0126 Lost Communication with Steering Angle Sensor Module
U1101 Lost Communication with Distance Control ECU

DESCRIPTION

This DTC is output when a communication malfunction occurs between the sensors and ECUs.

DTC Code DTC Detection Condition Trouble Area
U0100 The vehicle speed is 40 km/h (25 mph) or more with the cruise control main switch on (vehicle-to-vehicle distance control mode) and communication from the ECM to the distance control ECU stops.

  • Distance control ECU

  • CAN communication system

  • ECM
U0122 The vehicle speed is 40 km/h (25 mph) or more with the cruise control main switch on (vehicle-to-vehicle distance control mode) and communication from the master cylinder solenoid (skid control ECU) to the ECM stops.

  • Master cylinder solenoid (skid control ECU)

  • CAN communication system

  • ECM
U0123 While cruise control is in operation (vehicle-to-vehicle distance control mode), the data sent from the yaw rate sensor to the distance control ECU is abnormal.

  • Distance control ECU

  • Yaw rate sensor

  • CAN communication system

  • ECM
U0126 While cruise control is in operation (vehicle-to-vehicle distance control mode), the data sent from the steering angle sensor to the distance control ECU is abnormal.

  • Distance control ECU

  • Steering angle sensor

  • CAN communication system

  • ECM
U1101 The vehicle speed is 40 km/h (25 mph) or more with the cruise control main switch on (vehicle-to-vehicle distance control mode) and communication from the distance control ECU to the ECM stops.

  • Distance control ECU

  • CAN communication system

  • ECM

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC (CAN COMMUNICATION SYSTEM)


    1. Use the intelligent tester to check if the CAN communication system is functioning normally Click here for LHD, Click here for RHD).

      Result
      Result Proceed to

      OK

      (CAN DTC is not output)

      		 A

      NG

      (for LHD)

      		 B

      NG

      (for RHD)

      		 C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

    USE SIMULATION METHOD TO CHECK Click here