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DTC B1350: Speaker Circuit [10/2022 - 11/2023]: Description

The vehicle approaching speaker assembly circuit consists of the vehicle approaching speaker controller and vehicle approaching speaker assembly.

This DTC is stored when a malfunction is detected in the vehicle approaching speaker assembly circuit or vehicle approaching speaker controller.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1350 Speaker Circuit Detection condition: 
  1. The ignition switch is ON.
  2. IG power source voltage is 10 V or more.

Malfunction status: 

  1. When ECU output sound signal is being monitored with warning sound not being output, a speaker circuit open, short or short to ground is detected.
  2. When vehicle proximity warning sound output conditions are met, an internal malfunction is continuously detected in the vehicle approaching speaker controller.

Malfunction duration: 

  1. 6 seconds or more
  2. 3 seconds or more
  • Vehicle approaching speaker controller
  • Vehicle approaching speaker assembly
  • Harness or connector