DTC B1AA1-87: UART Communication Between ANC and Audio Amplifier Missing Message [02/2024 - ]: 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 Detection Condition | Trouble Area | DTC Output from | Priority |
|---|---|---|---|---|---|
| B1AA1-87 | UART Communication Between ANC and Audio Amplifier Missing Message | When the stereo component equalizer assembly detects a UART communication malfunction in the stereo component amplifier assembly for 4 seconds or more continuously 3 seconds after the ignition switch is turned to IG* |
|
Active Noise Control | A |
HINT:
*: Malfunction monitoring is not performed during the following conditions to prevent erroneous detection.
- The auxiliary battery voltage is less than 9.5 V.
- Before 3 seconds have elapsed after the auxiliary battery voltage has returned to normal.