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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 142 (Supplemental Restraint System) >> Diagnostic Tests >> Air Bag And Safety Belt PRETENSIONER Supplemental Restraint System (SRS) >> Principles Of Operation >> Impact Sensors

Impact Sensors

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
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 air bags have deployed. Failure to follow these instructions may result in serious personal injury or death in a crash.

The SRS employs 5 impact sensors. One of the sensors is integral to the RCM and is not separately serviceable. The RCM is mounted on the center tunnel under the instrument panel. There are 2 front impact severity sensors located in the front-center of the vehicle, behind the grille. In addition, there are 2 side impact sensors. The side impact sensors are located at the base of each B-pillar below the safety belt retractor and pretensioner. Mounting orientation is critical for correct operation of all impact sensors.

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