Lexus ES manuals

Lexus ES: 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

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:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY

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

DESCRIPTION This DTC is stored when an UART communication error occurs between the stereo component equalizer assembly and stereo component amplifier assembly. DTC No. Detection Item DTC Detect

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

DESCRIPTION These DTCs are stored when a malfunction occurs in the No. 1 active noise control microphone system. DTC No. Detection Item DTC Detection Condition Trouble Area B1AA296 Fron

 Front Right Microphone Circuit Component Internal Failure (B1AA696,B1AA71C)

DESCRIPTION These DTCs are stored when a malfunction occurs in the No. 2 active noise control microphone system. DTC No. Detection Item DTC Detection Condition Trouble Area B1AA696 Fron

SEE MORE:

 Parts Location

PARTS LOCATION ILLUSTRATION *1 TILT AND TELESCOPIC SWITCH *2 STEERING COLUMN ASSEMBLY - TILT MOTOR - TELESCOPIC MOTOR *3 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY - TI&TE FUSE *4 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU-DCC NO. 2 FUSE - ECU-IG1 NO.

 For your information

Main Owner's Manual Please note that this manual applies to all models and explains all equipment, including options. Therefore, you may find some explanations for equipment not installed on your vehicle. All specifications provided in this manual are current at the time of printing. How

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