Jeep Grand Cherokee 2014 Operating Manual page 47

The ORC monitors the readiness of the electronic
parts of the air bag system whenever the ignition
switch is in the START or ON/RUN position. If the
key is in the LOCK position, in the ACC position, or
not in the ignition, the air bag system is not on and
the air bags will not inflate.
The ORC contains a backup power supply
system that may deploy the air bags even if the
battery loses power or it becomes disconnected
prior to deployment.
Also, the ORC turns on the Air Bag
Warning Light in the instrument
panel for approximately four to
eight seconds for a self-check
when the ignition is first turned on.
After the self-check, the Air Bag
Warning Light will turn off. If the ORC detects a
malfunction in any part of the system, it turns on
the Air Bag Warning Light, either momentarily or
continuously. A single chime will sound if the
light comes on again after initial startup.
It also includes diagnostics that will illuminate
the instrument cluster Air Bag Warning Light if a
malfunction is noted that could affect the air bag
system. The diagnostics also record the nature
of the malfunction.
WARNING!
Ignoring the Air Bag Warning Light in your
instrument panel could mean you won't have
the air bags to protect you in a collision. If the
light does not come on as a bulb check when
the ignition is first turned on, stays on after
you start the vehicle, or if it comes on as you
drive, have an authorized dealer service the
air bag system immediately.
Driver And Passenger Advanced Front Air
Bag Inflator Units
The Driver and Passenger Advanced Front Air
Bag Inflator Units are located in the center of the
steering wheel and on the right side of the
instrument panel. When the ORC detects a
collision requiring the Advanced Front Air Bags,
it signals the inflator units. A large quantity of
non-toxic gas is generated to inflate the Ad-
vanced Front Air Bags. Different air bag inflation
rates are possible, based on several factors,
including the collision type and severity. The
steering wheel hub trim cover and the upper
right side of the instrument panel separate and
fold out of the way as the air bags inflate to their
full size. The air bags fully inflate in about 50 to
70 milliseconds. This is about half of the time it
takes to blink your eyes. The air bags then
quickly deflate while helping to restrain the
driver and front passenger.
The Advanced Front Air Bag gas is vented
through the vent holes in the sides of the air
bag. In this way, the air bags do not interfere
with your control of the vehicle.
Supplemental Driver Side Knee Air Bag
Inflator Unit
The Supplemental Driver Side Knee Air Bag
unit is located in the instrument panel trim
beneath the steering column. When the ORC
detects a collision requiring the air bag, it sig-
nals the inflator units. A large quantity of non-
toxic gas is generated to inflate the Supplemen-
tal Driver Side Knee Air Bag. The trim cover
separates and folds out of the way allowing the
air bag to inflate to the full size. The air bag fully
inflates in about 15 to 20 milliseconds.
43