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DTC U023A: Lost Communication with Front Camera Module [08/2016 - ]: Description

The pre-collision city sensor communicates with the skid control ECU (brake actuator assembly) via CAN communication.

If the pre-collision city sensor detects a communication error between it and the skid control ECU (brake actuator assembly), it stores DTC U023A.

DTC No. Detection Item DTC Detection Condition Trouble Area
U023A Lost Communication with Front Camera Module Both of the following conditions are met:
  1. All of the following conditions are met:
    • 3 seconds have elapsed since the ignition switch was turned to ON.
    • The battery voltage is 10 V or more for 3 seconds or more.
  2. All of the following conditions are met for 2 second or more:
    • Communication between the pre-collision city sensor and skid control ECU (brake actuator assembly) is normal.
    • The skid control ECU (brake actuator assembly) receives a communication error signal from the pre-collision city sensor.
  • CAN communication system
  • Skid control ECU (Brake actuator assembly)
  • Pre-collision city sensor