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Home >> Ford >> 2018 >> Mustang GT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 129 (Supplemental Restraint System) >> Description And Operation >> Airbag and Seatbelt Pretensioner Supplemental Restraint System (SRS) - System Operation and Component Description >> System Operation >> Network Message Chart - Supplemental Restraint System (SRS)

Network Message Chart - Supplemental Restraint System (SRS)

WARNING: This page is about a different car, the 2018 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

Module Network Input Messages - RCM 

Broadcast Message Originating Module Message Purpose
eCall confirmation APIM Used for SYNC® 911 Assist™ operation. Indicates whether eCall notification is in progress after an airbag deployment.
Ignition status BCM Used to qualify certain faults during RCM self-diagnostics.
Airbag warning indicator status IPC Confirms airbag warning indicator status to the RCM.
OCS vehicle calibration data OCSM Shares application-specific data for comparison purposes to make sure the correct OCSM and RCM are installed.
OCS fault status OCSM Indicates an OCS fault, if present.
OCS sensor data OCSM OCS sensor readings.
OCS serial number OCSM OCSM serial number.
Restraints module power status BECMB Communicates BECMB fault status to the RCM.
Vehicle configuration data BCM Used for verifying vehicle configuration data.