System Diagram
Network Message Chart - Warning Chimes
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 receives messaged inputs from other modules on the CAN, unless the chime is controlled exclusively by the IPC. The IPC communcates on the HS-CAN3. If the originating module communicates on a network other than the HS-CAN3, the messaged signals are sent to the GWM first, then to the IPC.
| Chime | Network Message | Originating Module | Originating CAN | Receiving Module |
|---|---|---|---|---|
| Adaptive cruise control | Cruise control status | PCM | FD-CAN | IPC |
| Adaptive cruise control forward distance alert | IPMA | |||
| Auto hitch | Trailer hitch chime request | IPMA | FD-CAN | IPC |
| Belt-Minder® | Driver seatbelt buckle status Passenger seatbelt buckle status |
RCM | HS-CAN2 | IPC |
| Vehicle speed | PCM | FD-CAN | IPC | |
| Gear lever position | PCM (gas/ HEV)/ TCM (diesel) | FD-CAN | IPC | |
| Chime control | IPC chime request Chime source Chime module power up Chime controls |
IPC | HS-CAN3 | IPC DSP (if equipped) |
| Chime status feedback | Audio chime status | ACM | HS-CAN3 | IPC DSP (if equipped) |
| Chime volume | Engine rpm data | PCM | FD-CAN | IPC DSP (if equipped) |
| Chime wakeup | Ignition status Door ajar status Accessory delay |
BCM | HS-CAN1 | IPC |
| CTA | Side obstacle detect status-left Cross traffic left sensor status Side obstacle detect status-right Cross traffic right sensor status |
IPMA | FD-CAN | IPC |
| Diesel exhaust fluid level | Diesel exhaust fluid warning indicator Diesel exhaust fluid contaminated warning request |
PCM | FD-CAN | IPC |
| Diesel exhaust over-temperature | Diesel exhaust over-temperature | PCM | FD-CAN | IPC |
| Door ajar | Driver door ajar status Passenger door ajar status Left rear door ajar status Right rear door ajar status |
BCM | HS-CAN1 | IPC |
| Vehicle speed | PCM | FD-CAN | IPC | |
| Forward collision warning | Forward collision chime request | IPMA | FD-CAN | IPC |
| Headlamps on | Headlamps on warning chime | BCM | HS-CAN1 | IPC |
| Electric Vehicle (EV) engine off reminder (HEV) | Gear lever position Power pack ready status |
PCM | FD-CAN | IPC |
| Driver door ajar status | BCM | HS-CAN1 | IPC | |
| Highway assist (hard takeover) | Traffic jam assist warning request | IPMA | FD-CAN | IPC |
| Ignition-engine on | Vehicle speed Power pack status (HEV) |
PCM | FD-CAN | IPC |
| Transmission gear display mode | PCM (gas/ HEV)/ TCM (diesel) | FD-CAN | IPC | |
| Driver door ajar status | BCM | HS-CAN1 | IPC | |
| Key-in-ignition | Key-in-ignition status | BCM | HS-CAN1 | IPC |
| Max Recline seat chime (sleeper seat) | Sleeper seat position message request | DSM | MS-CAN | IPC |
| Memory stored feedback (memory seat) | Memory feedback request | DSM | MS-CAN | IPC |
| Parking aid | Parking aid chime request | IPMA | FD-CAN | IPC |
| PRNDM not in park | Transmission gear display mode | PCM (gas/ HEV)/ TCM (diesel) | FD-CAN | IPC |
| Vehicle speed | PCM | FD-CAN | IPC | |
| Ignition status Driver door ajar status Transport mode |
BCM | HS-CAN1 | IPC | |
| Perimeter alarm | Perimeter alarm chime request | BCM | HS-CAN1 | IPC |
| Seatbelt | Driver seatbelt buckle status Passenger seatbelt buckle status Front passenger detect status |
RCM | HS-CAN2 | IPC |
| Service AdvanceTrac | Brake chime request | ABS module | FD-CAN | IPC |
| Turn signal-hazard on tick-tock | Left turn lamp on request Right turn lamp on request |
BCM | HS-CAN1 | IPC |
| Turn signal left on | Turn signal switch status | SCCM | HS-CAN2 | IPC |