ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:U0073/94, U0100/65, U0120/96, U0123/62, U0124/95, U0126/63, U0128/13, U0130/68, U0134/15, U0151

DTC Code DTC Name
U0073/94 Control Module Communication Bus OFF
U0100/65 Lost Communication with ECM / PCM
U0120/96 Lost Communication with Starter / Generator Control Module
U0123/62 Lost Communication with Yaw Rate Sensor Module
U0124/95 Lost Communication with Lateral Acceleration Sensor Module
U0126/63 Lost Communication with Steering Angle Sensor Module
U0128/13 Lost Communication with Park Brake Control Module
U0130/68 Lost Communication with Steering Effort Control Module
U0134/15 Lost Communication with DRS Module
U0151 Lost Communication with Airbag ECU

DESCRIPTION

The skid control ECU assembly receives signals from the ECM, steering sensor, yaw rate sensor, acceleration sensor (yaw rate sensor), VGRS ECU (front steering control ECU), DRS ECU (raer steering control ECU), parking brake ECU assembly, certification ECU (smart key ECU assembly) and airbag ECU assembly via CAN communication.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
U0073/94 Control Module Communication Bus OFF

400

401

402

403

404

406

407

411

412

  • INF Code: 400


    • Either of the following is detected:


      1. When terminal IG1 voltage is 10 V or more, data from the yaw rate sensor cannot be received for 1 second or more. (Yaw rate sensor response malfunction)

      2. When terminal IG1 voltage is 10 V or more, the condition in which data from the yaw rate sensor cannot be received once or more within 5 seconds, occurs 10 times in succession.


  • INF Code: 401


    • Either of the following is detected:


      1. When terminal IG1 voltage is 10 V or more, data from the acceleration sensor cannot be received for 1 second or more. (Acceleration sensor response malfunction)

      2. When terminal IG1 voltage is 10 V or more, the condition in which data from the acceleration sensor cannot be received once or more within 5 seconds, occurs 10 times in succession.


  • INF Code: 402


    • Either of the following is detected:


      1. When terminal IG1 voltage is 10 V or more, data from the steering sensor cannot be received for 1 second or more. (Steering sensor response malfunction)

      2. When terminal IG1 voltage is 10 V or more, the condition in which data from the steering sensor cannot be received once or more within 5 seconds, occurs 10 times in succession.


  • INF Code: 403


    • With IG1 terminal voltage 10 V or more, communication with VGRS ECU (front steering control ECU) does not occur for 1 second or more. (VGRS ECU (front steering control ECU) response malfunction)


  • INF Code: 404


    • With IG1 terminal voltage 10 V or more, communication with DRS ECU (rear steering control ECU) does not occur for 1 second or more. (DRS ECU (rear steering control ECU) response malfunction)


  • INF Code: 406, 407, 411, 412


    • CAN communication line has open or short, and cannot perform communication.

  • INF Code: 400, 401


    • CAN communication line

    • Yaw rate sensor

    • Skid control ECU assembly


  • INF Code: 402


    • CAN communication line

    • Steering sensor

    • Skid control ECU assembly


  • INF Code: 403


    • CAN communication line

    • VGRS ECU (front steering control ECU)

    • Skid control ECU assembly


  • INF Code: 404


    • CAN communication line

    • DRS ECU (rear steering control ECU)

    • Skid control ECU assembly


  • INF Code: 406, 407, 411, 412


    • CAN communication line

    • Skid control ECU assembly

 ABS DTC
U0100/65 Lost Communication with ECM / PCM

166

167

  • INF Code: 166


    • When terminal IG1 voltage is 10 V or more, data from the ECM cannot be received for 2 second or more.


  • INF Code: 167


    • When terminal IG1 voltage is 10 V or more, data from the Shift control ECU cannot be received for 2 second or more.

  • CAN communication line

  • ECM

  • Skid control ECU assembly

  • Shift control ECU

 VSC DTC
U0120/96 Lost Communication with Starter / Generator Control Module 365 Push start switch data is invalid for 3 seconds or more.

  • CAN communication line

  • Certification ECU (smart key ECU assembly)

  • Skid control ECU assembly

 Electronically controlled brake system DTC
U0123/62 Lost Communication with Yaw Rate Sensor Module

338

339

  • INF Code: 338


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


  • INF Code: 339


    • When terminal IG1 voltage is 10 V or more, the condition in which data from the yaw rate sensor cannot be received once or more within 5 seconds occurs 10 times in succession.

  • CAN communication line

  • Yaw rate sensor

  • Skid control ECU assembly

 VSC DTC
U0124/95 Lost Communication with Lateral Acceleration Sensor Module

319

320

  • INF Code: 319


    • When terminal IG1 voltage is 10 V or more, data from the acceleration sensor cannot be received for 1 second or more.


  • INF Code: 320


    • When terminal IG1 voltage is 10 V or more, the condition in which data from the acceleration sensor cannot be received once or more within 5 seconds occurs 10 times in succession.

  • CAN communication line

  • Acceleration sensor (yaw rate sensor)

  • Skid control ECU assembly

 ABS DTC
U0126/63 Lost Communication with Steering Angle Sensor Module

350

601

  • INF Code: 350


    • When terminal IG1 voltage is 10 V or more, data from the Steering sensor cannot be received for 1 second or more.


  • INF Code: 601


    • When terminal IG1 voltage is 10 V or more, the condition in which data from the Steering sensor cannot be received once or more within 5 seconds occurs 10 times in succession.

  • CAN communication line

  • Steering sensor

  • Skid control ECU assembly

 VSC DTC
U0128/13 Lost Communication with Park Brake Control Module 425 With terminal IG1 voltage at 10 V or more, data cannot be received from the electric parking brake ECU for 1 second.

  • CAN communication line

  • Parking brake ECU assembly

  • Skid control ECU assembly

 Brake hold DTC
U0130/68 Lost Communication with Steering Effort Control Module

370

371

  • INF Code: 370


    • With terminal IG1 voltage at 10 V or more, data cannot be received from the VGRS ECU (front steering control ECU) for 1 second.

  • INF Code: 371


    • With the IG1 terminal voltage 10 V or more, data from the VGRS ECU (front steering control ECU) cannot be received once or more within 5 seconds 10 times in succession.

  • CAN communication system

  • VGRS ECU (front steering control ECU)

  • Skid control ECU assembly

 VSC DTC
U0134/15 Lost Communication with DRS Module

440

441

  • INF Code: 440


    • With terminal IG1 voltage at 10 V or more, data cannot be received from the DRS ECU (raer steering control ECU) for 1 second.


  • INF Code: 441


    • With the IG1 terminal voltage 10 V or more, data from the DRS ECU (raer steering control ECU) cannot be received once or more within 5 seconds 10 times in succession.

  • CAN communication system

  • DRS ECU (rear steering control ECU)

  • Skid control ECU assembly

 VSC DTC
U0151 Lost Communication with Airbag ECU 450 The IG2 terminal voltage is 9.5 V or higher and data cannot be received from the airbag ECU assembly continuously for 5 seconds

  • CAN communication system

  • Skid control ECU (brake actuator assembly)

  • Airbag ECU assembly

 Secondary collision brake DTC
DTC No. Brake warning light / yellow (minor malfunction) code ABS warning light code Slip indicator light code Brake hold standby indicator light code
U0073 36* 94* 43* -
U0100 - - 65 21
U0120 96 - - -
U0123 - - 62 -
U0124 36 95 43 21
U0126 - - 63 -
U0128 - - - 13
U0130 - - 68 -
U0134 - - 15 -
U0151 - - - -
*: When a CAN communication malfunction occurs due to an open circuit, the ABS warning light, brake warning / red(malfunction) and slip indicator light turn on. In other cases, the ABS warning light, brake warning / yellow (minor malfunction) and slip indicator light turn on.

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the engine switch off.

    3. Turn the engine switch on (IG).

    4. Check if the same DTC is output.


      Chassis > ABS/VSC/TRC > Trouble Codes

      Tech Tips

      If CAN communication system DTCs and relevant sensor DTCs are output simultaneously, troubleshoot the relevant sensor DTCs (for the ABS, VSC and/or electronically controlled brake system) after the CAN communication system returns to normal.

      Click here

      Result
      Result Proceed to
      CAN communication system DTCs are output. A
      DTCs are not output. B

    A

    INSPECT CAN COMMUNICATION SYSTEM Click here

    B

    USE SIMULATION METHOD TO CHECK Click here