VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:U0073, U0100, U0123, U0124, U0126, U0130, U0134

DTC Code DTC Name
U0073 Control Module Communication Bus OFF
U0100 Lost Communication with ECM / PCM
U0123 Lost Communication with Yaw Rate Sensor Module
U0124 Lost Communication with Lateral Acceleration Sensor Module
U0126 Lost Communication with Steering Angle Sensor Module
U0130 Lost Communication with VGRS
U0134 Lost Communication with DRS Module

DESCRIPTION

The skid control ECU (brake actuator assembly) receives signals from the ECM, the steering sensor, the yaw rate sensor (built in acceleration sensor), the front steering control ECU (VGRS ECU) and the rear steering control ECU (DRS ECU) via the CAN communication system.

DTC Code DTC Detection Condition Trouble Area
U0073

One of the following conditions is met:


  1. When the IG1 terminal voltage is between 10 and 17.4 V, after the output of data from the skid control ECU is completed, signals cannot be sent for 5 seconds or more.

  2. The condition that the bus OFF state occurs once or more within 0.1 seconds occurs 10 times in succession (sent signals cannot be received).

  3. When the IG1 terminal voltage is between 10 and 17.4 V, a delay in receiving data from the yaw rate sensor, the steering sensor, the front steering control ECU (VGRS ECU) and the rear steering control ECU (DRS ECU) continues for 1 second or more.

  4. When the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times or more within 1 minute.


    • The condition that a delay in receiving data from the yaw rate sensor, the steering sensor, the front steering control ECU (VGRS ECU) and the rear steering control ECU (DRS ECU) occurs more than once within 5 seconds.

 CAN communication system
U0100 When the IG1 terminal voltage is between 10 and 17.4 V and the vehicle speed is 15 km/h (9 mph) or more, data cannot be received from the ECM for 2 seconds or more. CAN communication system
U0123

Either condition is met:


  1. When the IG1 terminal voltage is between 10 and 17.4 V, data from the yaw rate sensor cannot be received for 1 second or more.

  2. When the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times or more within 1 minute.


    • The condition that data from the yaw rate sensor cannot be received occurs once or more within 5 seconds.

 CAN communication system
U0124

Either condition is met:


  1. When the IG1 terminal voltage is between 10 and 17.4 V, data from the acceleration sensor (yaw rate sensor) cannot be received for 1 second or more.

  2. When the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times or more within 1 minute.


    • The condition that data from the acceleration sensor (yaw rate sensor) cannot be received occurs once or more within 5 seconds.

 CAN communication system
U0126

Either condition is met:


  1. When the IG1 terminal voltage is between 10 and 17.4 V, data from the steering sensor cannot be received for 1 second or more.

  2. When the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times or more within 1 minute.


    • The condition that data from the steering sensor cannot be received occurs once or more within 5 seconds.

 CAN communication system
U0130

Either condition is met:


  1. When the IG1 terminal voltage is between 10 and 17.4 V, data from the front steering control ECU (VGRS ECU) cannot be received for 1 second or more.

  2. When the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times in succession.


    • The condition that data from the front steering control ECU (VGRS ECU) cannot be received occurs once or more within 5 seconds.

 CAN communication system
U0134

Either condition is met:


  1. When the IG1 terminal voltage is between 10 and 17.4 V, data from the rear steering control ECU (DRS ECU) cannot be received for 1 second or more.

  2. When the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times in succession.


    • The condition that data from the rear steering control ECU (DRS ECU) cannot be received occurs once or more within 5 seconds.

 CAN communication system

INSPECTION PROCEDURE

PROCEDURE


  1. RECONFIRM DTC


    1. Clear the DTCs Click here.

    2. Turn the engine switch off.

    3. Start the engine.

    4. Drive the vehicle at a speed of 15 km/h (9 mph) or more and turn the steering wheel to the right and left.

    5. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output (for LHD) B
      DTC is output (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    C

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here