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Home >> Ford >> 2013 >> Escape S >> Repair and Diagnosis >> External Pages >> Different car >> Section 357 (Electronic Power Assist Steering System) >> Description And Operation >> Electronic Power Assist Steering (EPAS) System >> System Operation >> Network Message Chart
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Network Message Chart

WARNING: This page is about a different car, the 2014 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
NETWORK MESSAGE CHART

Broadcast Message Originating Module Message Purpose
Steering wheel component angle ABS  Module Used to determine the steering wheel position.
Wheel speed data ABS  Module Used to validate the steering wheel component angle by confirming each individual wheel speed value is valid.
Steering angle count SCCM  Message sent every 10 ms for comparison purposes to verify the validity of the steering angle message.
Steering angle initialization SCCM  Used to determine the steering wheel position for vehicles equipped with active park assist.
Vehicle lateral acceleration Restraints Control Module Used by the PSCM  to learn the vehicle straight ahead position.
Engine RPM PCM  Engine Revolutions Per Minute (RPM) monitored to initiate EPAS  activation and continued operation.
Vehicle speed PCM  Used to determine the level of assist supplied.
Charging system status BCM-B  Used to confirm the charging system is operating in a manner that can support EPAS  operation.
Steering angle request PAM  Information request message for comparison between SCCM  and PSCM  steering angle data for vehicles equipped with active park assist.