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
(a) Clear the DTCs.
Body Electrical > Active Noise Control > Clear DTCs
NEXT | | |
(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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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
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
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:
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System (for Gasoline Model)
INSPECTION PROCEDURE 1. INSPECT BRAKE BOOSTER PUMP ASSEMBLY (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 2 (BM1) - 4 (GND1) Always 10 Ω or less 1 (BM2) - 3 (GND2) Always 10 Ω
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