Toyota Avalon Service & Repair Manual > Active Noise Control System: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Active Noise Control System DTC No. Detection Item Link B1AA044 ANC ECU EEPROM Data Memory Failure B1AA187 UART Communication Between ANC and Audio Amplifier Missing Message B1AA296 Front Left Microphone Circuit Component Internal Failure B1AA31C Front Left Microphone C ...