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Home >> Lexus >> 2016 >> GX 460 Base >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Vehicle Stability Control System (Diagnostic Codes & Symptom Tests) (2 Of 2) >> Vehicle Stability Control System >> DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0114: Lost Communication with 4WD Control ECU; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module [08/2019 - ] >> Description
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DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0114: Lost Communication with 4WD Control ECU; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module [08/2019 - ]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area
U0073 Control Module Communication Bus OFF One of the following conditions is met:
  • When the IG1 terminal voltage is between 10 and 17.4 V, after the output of data from the skid control ECU (master cylinder solenoid) is completed, the sending operation continues for 5 seconds or more.
  • The condition that bus OFF state occurs once or more within 0.1 seconds occurs 10 times in succession (Sent signals cannot be received).
  • When the IG1 terminal voltage is between 10 and 17.4 V, a delay in receiving data from the acceleration sensor (center airbag sensor assembly) and steering sensor continues for 1 second or more.
  • When the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times in succession.
    • The condition that a delay in receiving data from the acceleration sensor (center airbag sensor assembly) and steering sensor occurs more than once within 5 seconds.
 CAN communication system
U0100 Lost Communication with ECM / PCM Either condition is met:
  • When the IG1 terminal voltage is between 10 and 17.4 V and the vehicle speed 15 km/h (9 mph) or more, data cannot be sent to the ECM for 2 seconds or more.
  • When the IG1 terminal voltage is between 10 and 17.4 V and the vehicle speed 15 km/h (9 mph) or more, data cannot be received from the ECM for 2 seconds or more.
 CAN communication system
U0114 Lost Communication with 4WD Control ECU The CAN signal from the four wheel drive control ECU is lost or malfunctioning for 1.2 seconds. CAN communication system
U0124 Lost Communication with Lateral Acceleration Sensor Module Either condition is met:
  • When the vehicle speed is 7 km/h (4 mph) or more and the IG1 terminal voltage is between 10 and 17.4 V, data from the acceleration sensor (center airbag sensor assembly) cannot be received for 1 second or more.
  • When the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times in succession.
    • The condition that data from the acceleration sensor (center airbag sensor assembly) cannot be received occurs once or more within 5 seconds.
 CAN communication system
U0126 Lost Communication with Steering Angle Sensor Module One of the following conditions is met:
  • When the IG1 terminal voltage is between 10 and 17.4 V, data from the steering sensor cannot be received for 1 second or more
  • When the IG1 terminal voltage is between 10 and 17.4 V, the following occurs 10 times in succession.
  • The condition that data from the steering sensor cannot be received occurs once or more within 5 seconds.
 CAN communication system
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