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Home >> Lexus >> 2019 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Suspension >> Suspension Control Systems >> Air Suspension System - Diagnostic Codes >> Air Suspension System >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0101-87: Lost Communication with TCM Missing Message; DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0130-87: Lost Communication with Steering Effort Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message [12/2017 - 10/2023] >> Description
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DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0101-87: Lost Communication with TCM Missing Message; DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0130-87: Lost Communication with Steering Effort Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message [12/2017 - 10/2023]: Description

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

  1. *1: w/ Vacuum Brake Booster
  2. *2: w/o Vacuum Brake Booster
  3. *3: w/ Variable Gear Ratio Steering System
DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
U0100-87 Lost Communication with ECM/PCM "A" Missing Message While driving at 30 km/h (19 mph) or more, data is not received from the ECM via CAN communication for 3 seconds or more.
  • ECM
  • CAN communication system
  • Suspension control ECU
 Does not come on Yes
U0101-87 Lost Communication with TCM Missing Message While driving at 30 km/h (19 mph) or more, data is not received from the ECM via CAN communication for 6 seconds or more.
  • ECM
  • CAN communication system
  • Suspension control ECU
 Does not come on Yes
U0125-87 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message 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
  • Suspension control ECU
 Does not come on Yes
U0126-87 Lost Communication with Steering Angle Sensor Module Missing Message Data is not received from the steering sensor via CAN communication for 3 seconds or more.
  • Steering sensor
  • CAN communication system
  • Suspension control ECU
 Does not come on Yes
U0129-87 Lost Communication with Brake System Control Module Missing Message 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
  • Suspension control ECU
 Does not come on Yes
U0130-87 Lost Communication with Steering Effort Control Module Missing Message After the engine switch is turned on (IG) and 5 seconds elapse, CAN communication from the VGRS ECU (front steering control ECU)*3 stops for 3 seconds or more.
  • VGRS ECU (front steering control ECU)*3
  • CAN communication system
  • Suspension control ECU
 Does not come on Yes
U0140-87 Lost Communication with Body Control Module Missing Message Data is not received from the main body ECU (multiplex network body ECU) via CAN communication for 10 seconds or more.
  • Main body ECU (multiplex network body ECU)
  • CAN communication system
  • Suspension control ECU
 Does not come on Yes
U0155-87 Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message Data is not received from the combination meter assembly via CAN communication for 10 seconds or more.
  • Combination meter assembly
  • CAN communication system
  • Suspension control ECU
 Does not come on Yes
  1. *1: w/ Vacuum Brake Booster
  2. *2: w/o Vacuum Brake Booster
  3. *3: w/ Variable Gear Ratio Steering System
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