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Home >> Lexus >> 2021 >> IS 350 RWD >> Repair and Diagnosis (Single Page) >> Suspension >> Suspension Control Systems >> Adaptive Variable Suspension System - Diagnostic Codes >> Adaptive Variable Suspension System >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0101: Lost Communication With TCM; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module [10/2016 - 10/2017] >> Description
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DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0101: Lost Communication With TCM; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module [10/2016 - 10/2017]: Description

The absorber control ECU receives signals from the skid control ECU (brake actuator assembly), steering sensor, yaw rate sensor, ECM and TCM 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), CAN communication from the ECM stops for 3 seconds or more.
  • ECM
  • CAN communication system
  • Absorber control ECU
Does not come on -
U0101 Lost Communication With TCM While driving at 30 km/h (19 mph), CAN communication from the ECM or TCM stops for 6 seconds or more.
  • ECM*1
  • TCM*2
  • CAN communication system
  • Absorber control ECU
Does not come on *1: except 2GR-FSE 2WD
*2: for 2GR-FSE 2WD
U0122 Lost Communication with Vehicle Dynamics Control Module CAN communication from the skid control ECU (brake actuator assembly) stops for 3 seconds or more.
  • Skid control ECU (brake actuator assembly)
  • CAN communication system
  • Absorber control ECU
Does not come on -
U0124 Lost Communication with Lateral Acceleration Sensor Module CAN communication from the yaw rate sensor stops for 3 seconds or more.
  • Yaw rate sensor
  • CAN communication system
  • Absorber control ECU
Does not come on -
U0126 Lost Communication with Steering Angle Sensor Module CAN communication from the steering sensor stops for 3 seconds or more.
  • Steering sensor
  • CAN communication system
  • Absorber control ECU
Does not come on -