Navigator 4WD V8-5.4L SOHC VIN 5 (2005)
Impact Sensor: Description and Operation
SENSORS
WARNING:
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The restraints control module (RCM) orientation is critical for correct system operation. If a vehicle equipped with an air bag
supplemental restraint system (SRS) has been involved in a collision in which the center tunnel area has been damaged, inspect the
mounting and bracket for deformation. If damaged, the RCM must be replaced whether or not the air bags have deployed. In addition,
make sure the area of the RCM mounting is restored to its original condition.
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Vehicle sensor orientation is critical for correct system operation. If a vehicle equipped with an air bag supplemental restraint system
(SRS) is involved in a collision, inspect the sensor mounting bracket and wiring pigtail for deformation. Replace and correctly position
the sensor or any other damaged supplemental restraint system (SRS) components whether or not the air bag is deployed.
For these vehicles, the SRS uses up to eight sensors. Within the RCM there can be up to three safing sensors which are not separately serviced. The
RCM will always have at least one safing sensor for front impact. Two more safing sensors are used if the vehicle is equipped with safety canopy
modules. The RCM is mounted to the center tunnel beneath the console or bench seat. All vehicles will have a front impact severity sensor that is located
in the front-center of the vehicle, mounted near the bottom of the hood latch support bracket. If the vehicle is equipped with safety canopy modules, there
are four additional side impact sensors external to the RCM. One front row side impact sensor is located behind each of the front door interior trim
panels. One second row side impact sensor is located at the base of each C-pillar. Mounting orientation is critical for correct operation of all impact and
rollover sensors.