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Home >> Ford >> 2013 >> Edge SEL, 2.0L Eng VIN 9 >> Repair and Diagnosis >> External Pages >> Different car >> Section 234 (Supplemental Restraint System) >> Diagnosis And Testing >> Airbag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Principles of Operation >> Restraints Control Module (RCM)

Restraints Control Module (RCM)

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Do not handle, move or change the original horizontal mounting position of the restraints control module (RCM) while the RCM is connected and the ignition switch is ON. Failure to follow this instruction may result in the accidental deployment of the Safety Canopy and cause serious personal injury or death.
WARNING: If a vehicle has been in a crash, inspect the restraints control module (RCM) and the impact sensor (if equipped) mounting areas for deformation. If damaged, restore the mounting areas to the original production configuration. A new RCM  and sensors must be installed whether or not the airbags have deployed. Failure to follow these instructions may result in serious personal injury or death in a crash.
NOTE: This vehicle is equipped with the SYNC® feature which contains the 911 assist option. Refer to the Owner's Literature.

The RCM  carries out the following functions:

The RCM  monitors the SRS  for possible faults. If a fault is detected, the RCM  sends a request to the IPC  to illuminate the airbag warning indicator. When the ignition is turned OFF and then ON, the IPC  proves out the airbag warning indicator by illuminating for 6 seconds. If no faults are detected by the RCM  , the IPC  turns the airbag warning indicator off and it remains off. If the RCM  detects a fault, it sends a message to the IPC  to turn the airbag warning indicator on and it remains on for the rest of the ignition cycle. If the RCM  requests illumination of the airbag warning indicator and the airbag warning indicator does not function, the IPC  automatically activates an audible chime.

The RCM  includes a backup power supply. This feature provides sufficient backup power to deploy the airbags in the event the ignition circuit is lost or damaged during impact. The backup power supply depletes its stored energy approximately one minute after power and/or ground has been removed from the RCM  .