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Home >> Lexus >> 2019 >> LS 500 Base, RWD >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Pedestrian Protection System - Diagnostic Codes (2 Of 2) & Symptom Tests >> Pedestrian Protection System >> DTC U0125: Lost Communication with Yaw Rate G Sensor; DTC U0126: Lost Communication with Steering Angle Sensor; DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with Steering Effort Control; DTC U1104: Lost Communication with Driving Support ECU [09/2018 - 10/2023] >> Description
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DTC U0125: Lost Communication with Yaw Rate G Sensor; DTC U0126: Lost Communication with Steering Angle Sensor; DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with Steering Effort Control; DTC U1104: Lost Communication with Driving Support ECU [09/2018 - 10/2023]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
U0125 Lost Communication with Yaw Rate G Sensor The pedestrian detection ECU assembly is unable to receive certain data from the yaw rate sensor for 2 seconds or more.
  • CAN communication system
  • Yaw rate sensor
  • Pedestrian detection ECU assembly
 Comes on Not applicable
U0126 Lost Communication with Steering Angle Sensor The pedestrian detection ECU assembly is unable to receive certain data from the steering sensor for 2 seconds or more.
  • CAN communication system
  • Steering sensor
  • Pedestrian detection ECU assembly
 Comes on Not applicable
U0129 Lost Communication with Brake System Control Module w/ Vacuum Brake Booster: 
  1. The pedestrian detection ECU assembly is unable to receive certain data from the brake actuator assembly (skid control ECU) for 2 seconds or more.

w/o Vacuum Brake Booster: 
  1. The pedestrian detection ECU assembly is unable to receive certain data from the skid control ECU assembly for 2 seconds or more.
 w/ Vacuum Brake Booster: 
  • CAN communication system
  • Brake actuator assembly (skid control ECU)
  • Pedestrian detection ECU assembly

w/o Vacuum Brake Booster: 
  • CAN communication system
  • Skid control ECU assembly
  • Pedestrian detection ECU assembly
 Comes on Not applicable
U0130 Lost Communication with Steering Effort Control The pedestrian detection ECU assembly is unable to receive certain data from the front steering control ECU for 2 seconds or more.
  • CAN communication system
  • Front steering control ECU
  • Pedestrian detection ECU assembly
 Comes on Not applicable
U1104 Lost Communication with Driving Support ECU for Stereo Camera Type: 
  1. The pedestrian detection ECU assembly is unable to receive certain data from the driving support ECU for 2 seconds or more.

for Mono Camera Type: 
  1. The pedestrian detection ECU assembly is unable to receive certain data from the forward recognition camera for 2 seconds or more.
 for Stereo Camera Type: 
  • CAN communication system
  • Driving support ECU
  • Pedestrian detection ECU assembly

for Mono Camera Type: 
  • CAN communication system
  • Forward recognition camera
  • Pedestrian detection ECU assembly
 Comes on Not applicable
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