System Operation: Chimes
WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
Various vehicle systems send chime requests over the CAN to the IPC. The following are determined as the IPC processes these requests:
- Chime characteristics such as tone, tone length, number of repetitions, and time between tones
- Chime output volume
- Priority of the chime request
- Which speakers (all, front, or rear) will play the specific chime
The IPC sends the processed requests over the CAN to the ACM. The ACM outputs the left and right analog chime tones to the audio DSP module over dedicated chimes circuits as fluctuating AC voltage. The audio DSP module outputs the chime tones to the appropriate audio system speakers as fluctuating AC voltage.
For more information, Refer to: Warning Chimes - Overview . For even more information, Refer to: Warning Chimes - System Operation and Component Description .