(10) Do not reconnect the battery negative cable at
this time. The airbag system verification test proce-
dure should be performed following service of any
airbag system component. (Refer to 8 - ELECTRI-
CAL/RESTRAINTS - STANDARD PROCEDURE -
VERIFICATION TEST).
PASSENGER AIRBAG ON/OFF
SWITCH
DESCRIPTION
The passenger airbag on-off switch is standard
equipment on all versions of this model except quad
cab. This switch is a two-position, resistor multi-
plexed switch with a single integral red Light-Emit-
ting Diode (LED), and a non-coded key cylinder-type
actuator. The switch is located in the lower right cor-
ner of instrument panel cluster bezel, near the center
of instrument panel to make the Off indicator visible
to all front seat occupants. When the switch is in its
installed
position,
the
only
components
visible
through the dedicated opening of the cluster bezel
are the switch face plate and nomenclature, the key
cylinder actuator, and a small round lens with the
text
9Off9 imprinted on it. The “On” position of the
switch is designated by text imprinted upon the face
plate of the switch, but is not illuminated. The
remainder of the switch is concealed behind the
switch face plate and the instrument panel cluster
bezel.
The passenger airbag on-off switch housing is con-
structed of molded plastic and has three integral
mounting tabs. These mounting tabs are used to
secure the switch to the back of the molded plastic
switch face plate with three small screws. The
molded plastic face plate also has three integral
mounting tabs that are used to secure the switch and
face plate unit to the instrument panel cluster bezel
with three additional screws. A molded plastic con-
nector receptacle on the back of the switch housing
connects the switch to the vehicle electrical system
through a dedicated take out of the instrument panel
wire harness. The harness take out is equipped with
a molded plastic connector insulator that is keyed
and latched to ensure proper and secure switch elec-
trical connections. The passenger airbag on/off switch
cannot be adjusted or repaired and, if faulty or dam-
aged, the switch must be replaced.
OPERATION
The passenger airbag on-off switch allows the cus-
tomer to turn the passenger airbag function On or
Off to accommodate certain uses of the right front
seating position where airbag protection may not be
desired. See the owner’s manual in the vehicle glove
box for specific recommendations on when to enable
or disable the passenger airbag. The Off indicator of
the switch will be illuminated whenever the switch is
turned to the Off position. The ignition key is the
only key or object that should ever be inserted into
the switch. The on-off switch requires only a partial
key insertion to fully depress a spring-loaded locking
plunger. The spring-loaded locking plunger prevents
the user from leaving the key in the switch. The key
will be automatically ejected when force is not
applied. To actuate the passenger side airbag on/off
switch, insert the ignition key into the switch key
actuator far enough to fully depress the plunger, and
rotate the actuator to the desired switch position.
When the switch key actuator is rotated to its clock-
wise stop (the key actuator slot will be aligned with
the Off indicator), the Off indicator is illuminated
and the passenger airbag is disabled. When the
switch is rotated to its counterclockwise stop (the key
actuator slot will be in a vertical position), the Off
indicator will be extinguished and the passenger air-
bag is enabled.
The passenger airbag on/off switch is connects one
of two internal resistors in series between the pas-
senger airbag mux switch sense and passenger air-
bag mux switch return circuits of the Airbag Control
Module (ACM). The ACM continually monitors the
resistance in these circuits to determine the switch
position that has been selected. When the switch is
in the Off position, the ACM provides a ground input
to the switch through the passenger airbag indicator
driver circuit, which energizes the Light-Emitting
Diode (LED) that illuminates the Off indicator of the
switch. The ACM will also illuminate the Off indica-
tor of the switch for about seven seconds each time
the ignition switch is turned to the On position as a
bulb test. The ACM will also store a Diagnostic Trou-
ble Code (DTC) for any fault it detects in the passen-
ger airbag on/off switch or indicator circuits, and will
illuminate the airbag indicator in the instrument
cluster if a fault is detected. For proper diagnosis of
the passenger airbag on/off switch or the ACM, a
DRBIII
t scan tool is required. Refer to the appropri-
ate diagnostic information.
8O - 26
RESTRAINTS
AN
PASSENGER AIRBAG (Continued)