Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: ANC ECU EEPROM Data Memory Failure (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

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

OK:

DTC B1AA044 is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY

    Active Noise Control System

    UART Communication Between ANC and Audio Amplifier Missing Message (B1AA187)

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