Warning Chimes And Chime Characteristics
With Base AM/FM Audio System
The IPC uses multiple network messages to control the overall warning chime arbitrator. The IPC arbitrates and controls all chimes regardless if they are sounded through the audio system or the IPC. The chimes are all sounded through the IPC since the ACM is not on the CAN.
The warning chimes use volume, chime frequency, length of time the chime sounds, length of off time between chime tones, decay of the chime tone and the number of chime tones to identify which chime is sounding. Most warning chimes have unique characteristics, however, there are chimes that do sound the same. The chime characteristics are defined by the different chime types:
- Information
- Soft-warning
- Hard-warning
- Tick-tock (on-off)
The IPC uses the following messages to control the warning chimes:
- Engine rpm data
- Driver door ajar status
- Passenger door ajar status
- Left rear door ajar status
- Right rear door ajar status
- Hood ajar status
- Liftgate ajar status
- Accessory delay
- Ignition status
The IPC receives the engine rpm data from the PCM and all door, hood and liftgate ajar status, accessory delay and ignition status messages from the BCM through the GWM over the HS-CAN3.
Without Base AM/FM Audio System
The IPC uses multiple network messages to control the overall warning chime arbitrator. The IPC arbitrates and controls all chimes regardless if they are sounded through the audio system or the IPC. The warning chimes all sound through the audio system except for the turn signal tick-tock chime, which is sounded through the IPC. In the event of an audio system fault, the IPC sounds all chimes. The audio system has the ability to sound up to 2 chimes at a time while the IPC can only sound a single chime at a time.
The warning chimes use volume, chime frequency, length of time the chime sounds, length of off time between chime tones, decay of the chime tone and the number of chime tones to identify which chime is sounding. Most warning chimes have unique characteristics, however, there are chimes that do sound the same. The chime characteristics are defined by the different chime types:
- Information
- Soft-warning
- Hard-warning
- Tick-tock (on-off)
The IPC uses the following messages to control the warning chimes:
- Engine rpm data
- Driver door ajar status
- Passenger door ajar status
- Left rear door ajar status
- Right rear door ajar status
- Hood ajar status
- Liftgate ajar status
- Accessory delay
- Ignition status
- Audio chime status
The IPC sends the following messages to the ACM or DSP module (Harmon audio system only) control the warning chimes:
- IPC chime request
- Chime source
- Chime module power up
- Chime controls
The IPC receives the engine rpm data from the PCM and all door, hood and liftgate ajar status, accessory delay and ignition status messages from the BCM through the GWM over the HS-CAN3. The IPC receives the audio chime status message from the ACM over the HS-CAN3.
The IPC sends the IPC chime request, chime source, chime module power up and chime controls messages to the ACM or DSP module (Harmon audio system only) to control the chimes.