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Home >> Toyota >> 2021 >> Mirai Limited >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (2 Of 4) >> Electronically Controlled Brake System >> DTC C1240-00: Yaw Rate Sensor / Multi-axis Acceleration Sensor Module "A" [11/2020 - ] >> Description

DTC C1240-00: Yaw Rate Sensor / Multi-axis Acceleration Sensor Module "A" [11/2020 - ]: Description

The airbag ECU assembly has a built-in yaw rate and acceleration sensor.

If the identification ID of the yaw rate and acceleration sensor (airbag ECU assembly) is different to that stored in the No. 2 skid control ECU (brake actuator assembly), this DTC is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority Note
C1240-00 Yaw Rate Sensor / Multi-axis Acceleration Sensor Module "A" The yaw rate and acceleration sensor (airbag ECU assembly) identification information stored in the No. 2 skid control ECU (brake actuator assembly) is not consistent with the yaw rate and acceleration sensor (airbag ECU assembly) identification information sent via CAN communication continuously for 1 second or more.
  • Incorrect yaw rate and acceleration sensor (airbag ECU assembly) installed
  • No. 2 skid control ECU (brake actuator assembly)
Brake/EPB A Output ECU: No. 2 skid control ECU (brake actuator assembly)