Lexus ES: ANC ECU EEPROM Data Memory Failure (B1AA044)

Lexus ES (XZ10) Service Manual / Audio & Visual & Telematics / Audio / Video / Active Noise Control System (for Gasoline Model) / ANC ECU EEPROM Data Memory Failure (B1AA044)

DESCRIPTION

This DTC is 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:

No DTCs are output.

USE SIMULATION METHOD TO CHECK

REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY

SEE MORE:

Parts Location

PARTS LOCATION ILLUSTRATION *1 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - DCM FUSE - ECU-IG2 NO. 3 FUSE *2 DLC3 *3 AIRBAG ECU ASSEMBLY *4 DCM (TELEMATICS TRANSCEIVER) - MOBILEPHONE BATTERY ILLUSTRATION *1 FRONT NO. 2 SPEAKER ASSEMBLY (RH) *2 TELEPHONE MICROPHONE ASSE

Exhaust Gas Recirculation "A" Flow (P040000-P04029B)

DESCRIPTION Based on the driving conditions, the ECM regulates the volume of exhaust gas that is recirculated to each engine cylinder in order to lower the combustion temperature and reduce NOx emissions. The ECM monitors signals such as engine speed, engine coolant temperature, electric load, and v

Lexus ES: ANC ECU EEPROM Data Memory Failure (B1AA044)

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