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:

Reassembly

REASSEMBLY PROCEDURE 1. INSTALL WATER INLET PIPE (a) Install the water inlet pipe with the 2 bolts. Torque: 10 N·m {102 kgf·cm, 7 ft·lbf} 2. INSTALL NO. 2 CYLINDER HEAD GASKET Click here 3. INSTALL CYLINDER HEAD LH (a) Place the cylinder head LH onto the cylinder block sub-asse

Vehicle Control History

VEHICLE CONTROL HISTORY NOTICE: When checking the Vehicle Control History, make sure to record the output codes. Then, clear the Vehicle Control History (RoB) and check it again. CHECK VEHICLE CONTROL HISTORY (FRONT RADAR SENSOR SYSTEM) (a) Connect the Techstream to the DLC3. (b) Turn the power swit

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

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Reassembly

Vehicle Control History