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

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Active Noise Control > Clear DTCs

2.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Active Noise Control > Trouble Codes

OK:

DTC B1AA044 is not output.

USE SIMULATION METHOD TO CHECK

REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Adaptive Variable Suspension System: Front Wheels Speed Sensor Signal Malfunction (C1783)
DESCRIPTION The speed sensors monitor the speed of the wheels and send an appropriate speed signal to the absorber control ECU through the skid control ECU (brake actuator assembly). If a malfunction occurs in either a front speed sensor or rear speed sensor, DTC C1783 is stored. DTC No. Detection I ...

Toyota Avalon (XX50) 2019-2022 Owners Manual