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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Lane Departure Alert System - Diagnostic Codes & Circuit Tests - (Hybrid) >> Lane Departure Alert System >> DTC U0101: Lost Communication with TCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter) [02/2014 - 11/2016] >> Description

DTC U0101: Lost Communication with TCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter) [02/2014 - 11/2016]: Description

These DTCs are stored when a communication malfunction occurs between the sensors and ECUs.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0101 Lost Communication with TCM
  • 2 seconds or more have elapsed after the power switch is turned on (IG).
  • IG voltage is 10 V or more.
  • IG voltage is 10 V or more for 2 seconds or more.
  • While the vehicle is being driven at 1 km/h or 1 mph or more, communication between the power management control ECU and lane departure warning camera stops for 5 seconds or more.
  • CAN communication system
  • Power management control ECU
  • Lane departure warning camera
U0123 Lost Communication with Yaw Rate Sensor Module
  • 2 seconds or more have elapsed after the power switch is turned on (IG).
  • IG voltage is 10 V or more.
  • IG voltage is 10 V or more for 2 seconds or more.
  • While the vehicle is being driven at 1 km/h or 1 mph or more, communication between the yaw rate sensor and lane departure warning camera stops for 5 seconds or more.
  • CAN communication system
  • Yaw rate and acceleration sensor
  • Lane departure warning camera
U0129 Lost Communication with Brake System Control Module
  • 2 seconds or more have elapsed after the power switch is turned on (IG).
  • IG voltage is 10 V or more.
  • IG voltage is 10 V or more for 2 seconds or more.
  • While the power switch is on (IG), communication between the skid control ECU and lane departure warning camera stops for 5 seconds or more.
  • CAN communication system
  • Skid control ECU assembly
  • Lane departure warning camera
U0142 Lost Communication with Body Control Module "B"
  • 2 seconds or more have elapsed after the power switch is turned on (IG).
  • IG voltage is 10 V or more.
  • IG voltage is 10 V or more for 2 seconds or more.
  • While the power switch is on (IG), communication between the main body ECU and lane departure warning camera stops for 5 seconds or more.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Lane departure warning camera
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter)
  • 2 seconds or more have elapsed after the power switch is turned on (IG).
  • IG voltage is 10 V or more.
  • IG voltage is 10 V or more for 2 seconds or more.
  • While the power switch is on (IG), communication between the combination meter and lane departure warning camera stops for 50 seconds or more.
  • CAN communication system
  • Combination meter assembly
  • Lane departure warning camera