Network Message Chart

WARNING: This page is about a different car, the 2022 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

Module Network Input Messages: Power Steering Control Module (PSCM)

Broadcast Message	Originating Module	Message Purpose
ABS active	ABS module	Used to the ABS is operational.
Autopark status	PAM	This message is sent to the GWM and then to the PSCM. This message is used by the PSCM to determine the steering angle required by the active park assist system to park the vehicle.
Ignition status	BCM	This message is sent to the GWM and then to the PSCM. This message informs the PSCM of the current ignition status; off, accessory, run, start, unknown or invalid.
Lane keep assist data	IPMA	This message is used by the PSCM to alert the driver of a potential lane departure or to correct a lane departure incident.
Reverse gear state	PCM	This message is sent to the GWM and then to the PSCM. Informs the PSCM the transmission is currently in REVERSE gear.
Steering angle request	PAM	This message is sent to the BCM, then to the GWM and then to the PSCM. This message is used to request steering direction for the active park assist system.
Stability control brake active	ABS module	Used to confirm the operational state of the stability control system.
Steering data	SCCM	This message provides the PSCM with the internal base electric power steering signal defining turn signal switch status.
Steering effort mode	IPC	This message is first sent to the GWM and then to the PSCM. This message provides the PSCM with the current, driver selected steering mode; normal, comfort or sport. The EPAS preforms differently depending on the mode selected.
Steering wheel angle compensation	ABS module	The ABS module calculates steering angle based on wheel speed sensor information. The PSCM uses this information to verify other steering wheel angle information,
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 to confirm vehicle motion and direction of travel.
Vehicle lateral acceleration	RCM	Used to confirm vehicle motion and direction of travel.
Vehicle yaw rate	ABS module	Used to confirm vehicle motion and direction of travel.
Wheel speed data	ABS module	Used to confirm vehicle motion, direction of travel and vehicle speed. Also used to calculate steering angle to validate EPAS motor position sensor information.