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Home >> Lexus >> 2020 >> 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 U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message [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 U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message [10/2023 - ]: Description

The suspension control ECU receives signals from the ECM, acceleration sensor (airbag ECU assembly), steering sensor, skid control ECU (brake actuator assembly), main body ECU (multiplex network body ECU) and combination meter assembly via CAN communication.

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 (airbag ECU assembly) via CAN communication for 3 seconds or more.
  • Acceleration sensor (airbag ECU assembly)
  • 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) via CAN communication for 3 seconds or more.
  • Skid control ECU (brake actuator assembly)
  • 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
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