DTC C1A4A: Skid Control Buzzer Circuit [09/2015 - 08/2019]: Description

The driving support ECU assembly operates the pre-collision alarm by sending a buzzer request signal to the skid control buzzer assembly.

If the driving support ECU assembly detects a malfunction in the skid control buzzer assembly circuit, it stores DTC C1A4A.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1A4A	Skid Control Buzzer Circuit	When the engine switch is on (IG) and the pre-collision alarm is operating, either of the following conditions is met: A buzzer request signal is sent to the skid control buzzer assembly but the buzzer does not sound for 1 second or more. A buzzer request signal is not sent to the skid control buzzer assembly but the buzzer sounds for 1 second or more.	Skid control buzzer assembly Driving support ECU assembly Wire harness or connector