Network Message Chart
PSCM Network Input Messages
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| ABS active | ABS Module | Used to confirm that an ABS event is taking place. |
| 4x4 range selection | TCCM | Used by the PSCM for steering assist calculations. |
| Dynamic suspension status | VDM | Used to confirm the current status of the dynamic suspension; normal, comfort, sport, faulty, service required, temporarily off or mode change unavailable. The EPAS system changes the "feel" of the steering in conjunction with the dynamic suspension. |
| Engine speed | PCM | Engine RPM is monitored to initiate EPAS activation and continued operation. |
| Estimated steering wheel compensation angle | ABS Module | This message is a calculation made by the ABS module to indicate if the steering wheel is off center and by how far off center. The PSCM is able to compensate for the steering wheel being slightly off center. |
| Ignition status | BCM | Used to command the EPAS gear to alert the driver or steer the vehicle during lane keeping assist maneuvers. |
| Wheel speed data | ABS Module | Used to validate the steering wheel compensation angle by comparing the rotational speeds of each wheel. |
| Vehicle lateral acceleration data | RCM | Used by the PSCM for steering assist calculations. |
| Vehicle speed | PCM | Used by the PSCM to determine the amount of assist required. |