PSCM Network Input Messages

Broadcast Message	Originating Module	Message Purpose
ABS active	ABS module	Used to confirm the operational state of the ABS.
Ignition status	BCM	This message is first sent to the GWM and then to the PSCM. Used to confirm the ignition status of the vehicle.
Power pack status	PCM	This message is first sent to the GWM and then to the PSCM. Used to confirm the status of the operating mode; off - torque not available, on - torque not available, start in progress - torque not available or on - torque available.
Power system status	BCM	This message is first sent to the GWM and then to the PSCM. Used to confirm the status of the vehicle battery and charging system.
Stability control brake active	ABS module	Used to confirm the operational state of the stability control system.
Steering wheel angle	ABS module	Used to verify the validity of the steering angle sensor.
Traction control brake active	ABS module	Used to confirm the operational state of the traction control system.
Trailer backup assist enabled request	IPC	Used to enable the PSCM for PTBA operation for the trailer chosen by the driver.
Trailer backup assist switch request	TRM	Used to provide the current PTBA control knob position and button status; pressed, not pressed.
Trailer data	IPC	Used to provide the trailer data for the current active trailer. Includes the trailer identification and all the trailer measurements stored in the IPC.
Trailer speed limiting status	PCM	Used to provide the target sticker tracking data to the PSCM. Includes trailer angle data and the status of the IPMB ability to track the sticker.
Trailer target sticker data	IPMB	Used as an input to the PTBA controller in the PSCM.
Vehicle configuration information	BCM	This message is first sent to the GWM and then to the PSCM. Used to compare the PSCM configuration against the vehicles specific configuration (central car configuration).
Vehicle lateral acceleration	ABS module	Used by the PSCM for steering assist calculations.
Vehicle lateral acceleration	RCM	Used by the PSCM for steering assist calculations.
Vehicle longitudinal acceleration	ABS module	Used by the PSCM for steering assist calculations.
Vehicle speed data	ABS module	Used to determine the level of assist supplied to the steering gear and to validate the steering wheel component angle by comparing the rotational speeds of each wheel. The difference in the speed of each wheel is used to derive a steering angle for comparison against the EPAS motor position sensor.
Vehicle yaw rate	ABS module	Used by the PSCM for steering assist calculations.