Toyota Yaris: Active Noise Control System / ANC ECU Audio Amplifier Integrated Circuit (B1AA000,B1AA044)

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Audio & Visual & Telematics / Audio / Video / Active Noise Control System / ANC ECU Audio Amplifier Integrated Circuit (B1AA000,B1AA044)

DESCRIPTION

This DTC are stored when a malfunction occurs in the stereo component equalizer assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1AA000

ANC ECU Audio Amplifier Integrated Circuit

Stereo component equalizer assembly malfunction

Stereo component equalizer assembly

B1AA044

ANC ECU EEPROM Data Memory Failure

Stereo component equalizer assembly malfunction

Stereo component equalizer assembly

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Active Noise Control > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Active Noise Control > Trouble Codes

Result

Proceed to

DTC B1AA000 and B1AA044 are not output

A

DTC B1AA000 and B1AA044 are output

B

A

USE SIMULATION METHOD TO CHECK

B

REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY

    Diagnostic Trouble Code Chart

    D..

    Front Left Microphone Circuit Component Internal Failure (B1AA296,B1AA31C)

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