Fail-Safe (Active Noise Control Unit)
If a malfunction occurs in the Active noise cancellation system or Active sound enhancement system, Active Noise Control Unit performs fail-safe activation according to the detected malfunction.
| Detection Item | ANC/ASC Operation In Fail-Safe Mode | DTC |
|---|---|---|
| Active Noise Control Unit | Active noise cancellation system and Active sound enhancement system function are deactivated. | B1F00 |
| DTC B1F05, B1F06, B1F07 and B1F20 is detected | U1010 | |
| Engine speed signal | Active noise cancellation system and Active sound enhancement system function are deactivated. | B1F01 |
| CAN Communication | Active noise cancellation system and Active sound enhancement system function are deactivated | B1F05 U0100 U0140 |
| Active sound enhancement system function is deactivated | B1F06 B1F20 U0155 |
|
| Active noise cancellation system and Active sound enhancement system are fixed to a standard mode. | B1F07 U0198 |
|
| DTC B1F05, B1F06, B1F07 and B1F20 is detected | U1000 | |
| Front Microphone (LH) | Active noise cancellation system function is deactivated | B1F0A |
| Front Microphone (RH) | B1F0F | |
| Rear Microphone | B1F14 |