ADAPTIVE VARIABLE SUSPENSION SYSTEM, Diagnostic DTC:U0100, U0101, U0122, U0124, U0126

DTC Code DTC Name
U0100 Lost Communication with ECM / PCM "A"
U0101 Lost Communication with TCM
U0122 Lost Communication With Vehicle Dynamics Control Module
U0124 Lost Communication with Lateral Acceleration Sensor Module
U0126 Lost Communication with Steering Angle Sensor Module

DESCRIPTION

The absorber control ECU (front acceleration sensor RH) receives signals from the skid control ECU (brake actuator assembly), steering angle sensor (spiral cable with sensor sub-assembly), yaw rate and acceleration sensor, transmission control ECU and ECM via CAN communication.

When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system first.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Note
U0100 Lost Communication with ECM / PCM "A" While driving at 30 km/h (19 mph) or more, data is not received via CAN communication for 3 seconds or more.

  • ECM

  • CAN communication system

  • Absorber control ECU (front acceleration sensor RH)

 Does not come on -
U0101 Lost Communication with TCM While driving at 30 km/h (19 mph) or more, data is not received via CAN communication for 6 seconds or more.

  • ECM

  • Transmission control ECU assembly

  • CAN communication system

  • Absorber control ECU (front acceleration sensor RH)

 Does not come on -
U0122 Lost Communication with Vehicle Dynamics Control Module Data is not received from the skid control ECU (brake actuator assembly) via CAN communication for 3 seconds or more.

  • Skid control ECU (brake actuator assembly)

  • CAN communication system

  • Absorber control ECU (front acceleration sensor RH)

 Does not come on -
U0124 Lost Communication with Lateral Acceleration Sensor Module Data is not received from the yaw rate and acceleration sensor via CAN communication for 3 seconds or more.

  • Yaw rate and acceleration sensor

  • CAN communication system

  • Absorber control ECU (front acceleration sensor RH)

 Does not come on -
U0126 Lost Communication with Steering Angle Sensor Module Data is not received from the steering angle sensor (spiral cable with sensor sub-assembly) via CAN communication for 3 seconds or more.

  • Steering angle sensor (spiral cable with sensor sub-assembly)

  • CAN communication system

  • Absorber control ECU (front acceleration sensor RH)

 Does not come on -

CAUTION / NOTICE / HINT

Note


  • Before performing troubleshooting, inspect the connectors of related circuits.

  • If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first.

    Click here

  • Before replacing the absorber control ECU (front acceleration sensor RH), perform all of the following:


    • Symptom simulation.

      Click here

    • DTC inspection.

      Click here

    • GTS inspection.

      Click here


      • If no malfunctions are found in other areas, replace the absorber control ECU (front acceleration sensor RH).

  • After replacing the absorber control ECU (front acceleration sensor RH) with a new one, perform registration of vehicle identification information.

    Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Chassis > Air suspension > Clear DTCs

    2. Turn the engine switch off.

    3. Drive the vehicle at a speed of 30 km/h (19 mph) or more for 10 seconds or more.

    4. Check for DTCs.

      Click here


      Chassis > Air suspension > Trouble Codes
      Result
      Result Proceed to
      CAN DTCs are not output A
      CAN DTCs are output B

      Tech Tips

      If a CAN communication malfunction DTC and a related sensor malfunction DTC are output at the same time, the CAN communication malfunction must be repaired before troubleshooting the sensor.


    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) for LHD: Click here
    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) for RHD: Click here