Network Message Chart
BCM Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Camera setting request | APIM | Commands the zoom level on and off based on driver inputs through the audio system display. |
| Steering wheel angle | ABS module | Generates the intended vehicle path for the active guideline feature. |
| Vehicle speed | PCM | When the video delay feature is turned on, this message is used to turn the rear camera display off after the vehicle speed exceeds a preset threshold. |
APIM Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Camera settings | BCM | Displays the current status for active guidelines and visual park aid alert. |
| Gear lever position | GSM | Enables the video display when reverse (R) is selected. |
| Rear camera on demand request | BCM | Used by the APIM to command the audio system display on when the rear camera on demand is requested. |
| Vehicle speed | PCM | When the video delay feature is turned on, this message turns the rear camera display off after the vehicle speed exceeds a preset threshold. |
ABS Module Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Steering angle | PSCM | The ABS module uses the steering angle sensor data to generate the steering wheel angle message that is sent to the IPMA to support the active guideline feature. |
Image Display
The rear parking aid camera image is displayed by the audio system display when reverse (R) is selected. To determine the transmission gear position and enable the camera display, the GSM sends the gear position message to the GWM. The GWM then send the message to the BCM.
The rear parking aid camera is on any time it receives voltage (when the ignition is on), but a video signal is only generated under certain conditions. When reverse (R) is selected, the camera continuously generates a video signal. When any gear except reverse (R) is selected, the camera turns the video signal off when the vehicle speed reaches 10 km/h (6 mph), and turns the video signal on when vehicle speed falls below 8 km/h (5 mph). If the camera is not configured properly, some features may be inoperative. The camera sends the video signal on shielded twisted pair of wires to the APIM, which displays the image on the audio system display.
The decklid must be fully closed for correct operation of the rear parking aid camera system.
The following parking aid camera system features are driver selectable:
- Visual park aid alert -- allows the driver to see the object causing the parking aid system to sound.
- Manual zoom -- allows the driver to manually zoom the image.
- Video delay -- allows the driver to see the image behind the vehicle after the vehicle is shifted out of reverse (R) into any gear other than park (P).
The following camera system features are not driver selectable:
- Fixed guidelines -- assists the driver with aligning the vehicle with an object.
- Active guidelines -- displays the intended path of the vehicle based upon steering wheel input.
The audio system display settings menu turns the visual park aid alert and video delay on and off. The visual park aid alert and video delay features are generated within the APIM.