Network Message Chart
PSCM Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Gear lever position | TCM | Used for PTBA feature activation and video display. |
| Ignition status | BCM | Used to ensure the ignition state is appropriate for PTBA operation. |
| Trailer backup assist cancel request | APIM | Used to provide a cancel request from the APIM if it cannot support the PSCM display request. |
| Trailer backup assist enabled request | IPC | Used to enable the PSCM for PTBA operation for the trailer chosen by the user. |
| Trailer backup assist setup request | IPC | Request to setup up a new trailer. |
| Trailer backup assist status | IPMB | Used to provide the status of the PTBA system. |
| Trailer backup assist switch request | TRM | Used to provide the current PTBA control knob position and button status (pressed/not pressed). |
| Trailer ball to bumper distance | IPC | Indicates how far from the trailer ball is from the bumper. |
| Trailer setup | IPMB | Request to setup up a new trailer. |
| Trailer target to bumper distance | IPC | Indicates the target distance for the ball to bumper. |
| Vehicle speed | PCM | Used as an input to the PTBA controller in the PSCM. |
IPMB Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Message center display | IPC | Indicates what is displayed in the message center. |
| Message center feature configuration | IPC | Indicates the message center configuration. |
| Rear differential indicator request | TCCM | Used to indicate if there is a fault with the rear differential. |
| Rear differential lock indicator request | TCCM | Used to indicate if the rear differential has been locked. |
| Remote start status | BCM | Used to indicate if the vehicle is under remote start protocol. |
| Trailer angle offset direction status | IPC | Used to provide the trailer data for the current active trailer. Includes the trailer ID and all the trailer measurements stored in the IPC. |
| Trailer backup assist cancel request | APIM | Used to provide a cancel request from the APIM if it cannot support the PSCM display request. |
| Trailer backup assist enabled | PSCM | Used to request trailer angle detection in the IPMB. |
| Trailer backup assist enabled request | IPC | Request to setup up a new trailer. |
| Trailer backup assist setup status | IPC | Indicates the status of the trailer back up setup. |
| Trailer backup assist setup request | IPC | Request to setup up a new trailer. |
| Trailer backup assist text message request | PSCM | Used to provide PTBA center stack infotainment display status to the IPMB. |
| Trailer ball to bumper distance | IPC | Indicates how far from the trailer ball is from the bumper. |
| Trailer lamp connected | TRM | Deactivates the system if a trailer is connected. |
| Trailer target to bumper distance | IPC | Indicates the target distance for the ball to bumper. |
| Vehicle lateral acceleration | RCM | Used to determine the current vehicle lateral acceleration. |
| Wheel speed data | ABS module | Used to confirm vehicle movement and calculate distance traveled during PTBA maneuvers. |
| Vehicle yaw rate | RCM | Used to determine the current vehicle yaw rate. |
IPC Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Gear lever position | PCM | Input used for the park requirement for trailer set up in the message center. |
| Steering wheel message center switch status | SCCM | Used for the message center navigation and trailer setup. |
| Trailer backup assist text message request | PSCM | Used to provide the trailer information message displays in the message center. |
| Trailer reverse message request | IPMB | Used to generate messages on the center stack infotainment display. |
| Trailer setup | IPMB | Request to setup up a new trailer. |
| Trailer backup assist setup status | APIM | Indicates the status of the trailer back up setup. |
TRM Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Trailer backup assist text message | PSCM | Used to illuminate the status indicator in the PTBA control knob button when system is on. |
BCM Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Trailer assist lamp request | PSCM | Used to command the trailer assist lamp on and off for low ambient light operation. |
PCM Module Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Trailer backup assist enabled | PSCM | Used to limit the vehicle speed and throttle response when PTBA is in use. |
APIM Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Trailer backup assist text message request | PSCM | Used to generate messages on the center stack infotainment display. |
| Trailer reverse message request | IPMB | Used to generate messages on the center stack infotainment display. |