Network Message Chart
ABS Module Network Input Message Chart
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Accelerator pedal position | PCM | The ABS module uses accelerator pedal position information for correct operation of the stability control systems. |
| AWD lock status | TCCM | The ABS module disables some stability control systems and increases the minimum threshold for other stability control systems when the AWD system is engaged. |
| AWD range fault | TCCM | The ABS module can request disengagement of the transfer case in the event ESC intervention is necessary. This message informs the ABS module when there is a fault in the TCCM preventing a range selection change. |
| AWD range selection | TCCM | This message informs the ABS module of the current AWD range selection; low range locked, neutral, high range locked, high range auto, high range 2WD or unknown. |
| AWD torque actual | TCCM | The ABS module can request disengagement of the transfer case in the event ESC intervention is necessary. The ABS module needs to know the actual torque being applied to the AWD system before requesting the transfer case disengaged. |
| Brake pedal applied | PCM | This message informs the ABS module that the driver has pressed the brake pedal. This message is also used by the ABS module to check the brake pressure sensor located inside the HCU. |
| Cruise control status | PCM | This message informs the ABS module of the current status of the cruise control system; off, denied, standby or active. |
| Drivers door ajar status | BCM | The ABS module resets the parameters used for the RSC ® function when the driver door is opened. |
| Drivers rear door ajar status | BCM | The ABS module resets the parameters used for the RSC ® function when the driver rear door is opened. |
| Engine off | BCM | This message informs the ABS module the engine is no longer running. |
| Engine RPM | PCM | This message informs the ABS module of the current engine RPM. The ABS module uses engine RPM information for correct operation of the stability control systems. |
| Hill descent switch | IPC | This message informs the ABS module the driver has requested the hill descent control portion of the stability control system be disabled or enabled. |
| Hood ajar status | BCM | The ABS module resets the parameters used for the RSC ® function when the hood is opened. |
| Ignition status | BCM | This message informs the ABS module of the current ignition status; off, accessory, run, start, invalid or unknown. |
| Liftgate ajar status | BCM | The ABS module resets the parameters used for the RSC ® function when the liftgate is opened. |
| Parking brake status | BCM | The ABS module uses the parking brake status for the hill start assist function. |
| Passenger door ajar status | BCM | The ABS module resets the parameters used for the RSC ® function when the passenger door is opened. |
| Passenger rear door ajar status | BCM | The ABS module resets the parameters used for the RSC ® function when the passenger rear door is opened. |
| RCM serial number | RCM | The ABS module stores the RCM serial number and verifies the serial number when the vehicle is started or the ignition is set to ON or ACC. Over time, the ABS module learns the offset of the sensors inside the RCM. When a new serial number is found, the ABS module resets the offset number learned for RSC ®. |
| Selector lever (PRNDL) status | PCM | This message provides the ABS module with the current transmission gear status. The ESC and RSC ® functions do not operate when the transmission is in REVERSE. |
| Steering angle | PSCM | The PSCM calculates the steering angle based on input from the 2 internal steering sensors and from the wheel speed sensor message from the ABS module. The steering angle is then sent to the ABS module over the HS-CAN. |
| Steering angle count | PSCM | The PSCM calculates the steering angle count on input from the 2 internal steering sensors and from the wheel speed sensor message from the ABS module. The steering angle count is then sent to the ABS module over the HS-CAN. The ABS module uses this message to determine the validity of the steering angle sensor signal. |
| Steering angle initialization | PSCM | When a new PSCM is installed on a vehicle, the module must be properly initialized for the ABS to function correctly. If initialization has not taken place, the PSCM broadcasts a "not initialized" message on the HS-CAN. |
| Traction control on-off | IPC | This message informs the ABS module the driver has requested the traction control portion of the stability control system be disabled or enabled. |
| Trailer brake connection | TBC Module | Informs the ABS module there is a trailer connected to the vehicle. The ABS module uses this information for correct operation of the stability control systems. |
| Trailer sway configuration command | IPC | Informs the ABS module the driver has turned the trailer sway control on or off. |
| Transmission shift in progress | PCM | This message is used by the ABS module for traction control performance. |
| Vehicle configuration data | BCM | This message provides the ABS module with the current optional and configured items such as tire size, axle ratio, engine type, transmission type, keyless entry and VIN. |
| Vehicle dynamic data display | VDM | Used to inform the ABS module of the current vehicle suspension mode; comfort, normal, sport, faulty, service required, temporarily off, or mode change unavailable. The ABS module uses the information for correct operation of the stability control systems. |