VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:U0073, U0100, U0123, U0126, U0142, U0151

DTC Code DTC Name
U0073 Control Module Communication Bus OFF
U0100 Lost Communication with ECM / PCM
U0123 Lost Communication with Yaw Rate Sensor Module
U0126 Lost Communication with Steering Angle Sensor Module
U0142 Lost Communication with Body Control Module "B"
U0151 Lost Communication with Airbag ECU

DESCRIPTION

The skid control ECU (brake actuator assembly) receives signals from the ECM, steering angle sensor, yaw rate and acceleration sensor (airbag sensor assembly), airbag sensor assembly and main body ECU (multiplex network body ECU) via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0073 Control Module Communication Bus OFF The +BS terminal voltage is between 9.6 and a 16.5 V and a bus OFF state occurs for 0.1 seconds or more. CAN communication system
U0100 Lost Communication with ECM / PCM The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals cannot be sent to the ECM for 2 seconds or more.

  • CAN communication system

  • Skid control ECU (brake actuator assembly)

  • ECM
U0123 Lost Communication with Yaw Rate Sensor Module The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals from the yaw rate and acceleration sensor cannot be received for 1 second or more.

  • CAN communication system

  • Skid control ECU (brake actuator assembly)

  • Yaw rate and acceleration sensor (airbag sensor assembly)
U0126 Lost Communication with Steering Angle Sensor Module The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals from the steering angle sensor cannot be received for 1 second or more.

  • CAN communication system

  • Skid control ECU (brake actuator assembly)

  • Steering angle sensor
U0142 Lost Communication with Body Control Module "B" The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, data cannot be received from main body ECU (multiplex network body ECU) continuously for 2 seconds or more.

  • CAN communication system

  • Skid control ECU (brake actuator assembly)

  • Main body ECU (multiplex network body ECU)
U0151 Lost Communication with Airbag ECU The +BS terminal voltage is between 9.6 and 16.5 V, the vehicle speed is 6 km/h (4 mph) or more, and signals from the airbag sensor assembly cannot be received for 5 seconds or more.

  • CAN communication system

  • Skid control ECU (brake actuator assembly)

  • Airbag sensor assembly

PROCEDURE


  1. CHECK DTC OUTPUT (HEALTH CHECK)


    1. Clear the DTCs.


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the ignition switch off.

    3. Turn the ignition switch to ON.

    4. Enter the following menus: System Select / Health Check.

    5. Check for DTCs.

      Result
      Result Proceed to
      DTCs for related systems are output together with DTC U0073, U0100, U0123, U0126, U0142 or U0151. A
      U0073, U0100, U0123, U0126, U0142 or U0151 is output B
      DTCs are not output C

    A

    GO TO DIAGNOSTIC TROUBLE CODE CHART (RELATED SYSTEM)

    B

    INSPECT CAN COMMUNICATION SYSTEM Click here

    C

    USE SIMULATION METHOD TO CHECK Click here