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Home >> Toyota >> 2021 >> Sequoia TRD Pro >> Repair and Diagnosis (Single Page) >> Suspension >> Electronic Suspension >> Air Suspension System - Diagnostic Codes >> Air Suspension System >> DTC U0100: Lost Communication with ECM / PCM "A"; 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 U0140: Lost Communication with Body Control Module [08/2015 - ] >> Description
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DTC U0100: Lost Communication with ECM / PCM "A"; 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 U0140: Lost Communication with Body Control Module [08/2015 - ]: Description

The suspension control ECU inputs signals from the skid control ECU and ECM via CAN communication. When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system first.

DTC Code Detection Condition Trouble Area
U0100 While driving at 30 km/h (19 mph), CAN communication between suspension control ECU and ECM stops for 3 seconds or more.
  • CAN communication line
  • ECM
  • Suspension control ECU
U0122 CAN communication between suspension control ECU and Skid control ECU stops for 3 seconds or more.
  • CAN communication line
  • Skid control ECU
  • Suspension control ECU
U0124 CAN communication between suspension control ECU and yaw rate and acceleration sensor stops for 3 seconds or more.
  • CAN communication line
  • Yaw rate and acceleration sensor
  • Suspension control ECU
U0126 CAN communication between suspension control ECU and steering angle sensor stops for 3 seconds or more.
  • CAN communication line
  • Steering angle sensor
  • Suspension control ECU
U0140 CAN communication between suspension control ECU and main body ECU stops for 3 seconds or more.
  • CAN communication line
  • Main body ECU (Cowl side junction block LH)
  • Suspension control ECU