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Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis (Single Page) >> Restraints >> Seat Belts >> Pre-Collision System - Diagnostic Codes & Circuit Tests >> Pre-Collision System >> 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 U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message [11/2018 - ] >> Description
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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 U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message [11/2018 - ]: Description

When a malfunction is detected between various ECUs and sensors, these DTCs are stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0125-87 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message While the vehicle is being driven at 5 km/h (4 mph) or more, a communication error between the yaw rate sensor (airbag ECU assembly) and the forward recognition camera is detected for approximately 4 seconds or more. CAN communication system
U0126-87 Lost Communication with Steering Angle Sensor Module Missing Message 3 seconds or more after the power switch is turned on (IG), a communication error between the steering sensor and the forward recognition camera is detected for approximately 1 second or more. CAN communication system
U0129-87 Lost Communication with Brake System Control Module Missing Message 3 seconds or more after the power switch is turned on (IG), a communication error between the skid control ECU (brake booster with master cylinder assembly) and the forward recognition camera is detected for approximately 1 second or more. CAN communication system
U0293-87 Lost Communication with Hybrid/EV Powertrain Control Module Missing Message While the vehicle is being driven at 5 km/h (4 mph) or more, a communication error between the EV control ECU and the forward recognition camera is detected for approximately 6 seconds or more. CAN communication system