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Home >> Lexus >> 2019 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Suspension >> Suspension Control Systems >> Adaptive Variable Suspension System - Diagnostic Codes (2 Of 2) >> 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; DTC U0130: Lost Communication with VGRS; DTC U114C: Lost Communication with Suspension Control Module 1 [12/2017 - 10/2023] >> 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; DTC U0130: Lost Communication with VGRS; DTC U114C: Lost Communication with Suspension Control Module 1 [12/2017 - 10/2023]: Description

The absorber control ECU receives signals from the skid control ECU (brake actuator assembly)*1, skid control ECU assembly*2, steering sensor, acceleration sensor (yaw rate sensor), VGRS ECU (front steering control ECU)*3, suspension control ECU*4 and ECM via CAN communication.

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

  1. *1: w/ Vacuum Brake Booster
  2. *2: w/o Vacuum Brake Booster
  3. *3: w/ Variable Gear Ratio Steering System
  4. *4: w/ Air Suspension System
DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
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
 Does not come on Yes
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
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
U0122 Lost Communication With Vehicle Dynamics Control Module Data is not received from the skid control ECU (brake actuator assembly)*1 or skid control ECU assembly*2 via CAN communication for 3 seconds or more.
  • Skid control ECU (brake actuator assembly)*1
  • Skid control ECU assembly*2
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
U0124 Lost Communication with Lateral Acceleration Sensor Module Data is not received from the acceleration sensor (yaw rate sensor) via CAN communication for 3 seconds or more.
  • Acceleration sensor (yaw rate sensor)
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
U0126 Lost Communication with Steering Angle Sensor Module Data is not received from the steering sensor via CAN communication for 3 seconds or more.
  • Steering sensor
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
U0130 Lost Communication with VGRS After the engine switch is turned on (IG) and 5 seconds elapse, CAN communication from the VGRS ECU (front steering control ECU) stops for 3 seconds or more.
  • VGRS ECU (front steering control ECU)
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
U114C Lost Communication with Suspension Control Module 1 Data is not received from the suspension Control ECU via CAN communication for 4 seconds or more.
  • Suspension Control ECU
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
  1. *1: w/ Vacuum Brake Booster
  2. *2: w/o Vacuum Brake Booster
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