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Home >> Toyota >> 2023 >> RAV4 Adventure >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System - Diagnostic Codes >> Pre-Collision System >> DTC U0100-87: Lost Communication with ECM/PCM "A" 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 U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [12/2021 - ] >> Description
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DTC U0100-87: Lost Communication with ECM/PCM "A" 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 U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [12/2021 - ]: Description

The following DTCs are stored when there is a communication malfunction between the millimeter wave radar sensor and each sensor or ECU.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0100-87 Lost Communication with ECM/PCM "A" Missing Message When the ignition switch is ON for 3 seconds or more, an ECM communication malfunction continues for approximately 3 seconds or more. CAN communication system
U0125-87 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message When the ignition switch is ON for 3 seconds or more, at a vehicle speed of 3 mph (5 km/h) or more, a communication malfunction with the yaw rate sensor (airbag ECU assembly) continues for approximately 1 second or more. CAN communication system
U0126-87 Lost Communication with Steering Angle Sensor Module Missing Message When the ignition switch is ON for 3 seconds or more, a steering sensor communication malfunction continues for approximately 1 second or more. CAN communication system
U0129-87 Lost Communication with Brake System Control Module Missing Message for HV Model: 
  1. 3 seconds after the ignition switch is turned to ON, a communication error between the brake actuator assembly (No. 2 skid control ECU) and the millimeter wave radar sensor assembly is detected for approximately 1 second or more.

for Gasoline Model: 
  1. 3 seconds after the ignition switch is turned to ON, a communication error between the brake actuator assembly (skid control ECU) and the millimeter wave radar sensor assembly is detected for approximately 1 second or more.
CAN communication system
U0155-87 Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message When the ignition switch is ON for 3 seconds or more, a combination meter assembly communication malfunction continues for 8 seconds or more. CAN communication system
U0293-87 Lost Communication with Hybrid Powertrain Control Module Missing Message When the ignition switch is ON for 3 seconds or more, a communication malfunction with the hybrid vehicle control ECU assembly continues for approximately 3 seconds or more. CAN communication system