ACTIVE DTC
CONDITIONS
SQUIB STATUS
If Passenger Squib 1
open is an active code.
Check the stored DTC’s AND IF Passenger
Squib 2 open is NOT an active code.
Passenger Squib 1 was used;
Passenger Squib 2 is live.
If Passenger Squib 2
open is an active code.
Check the stored DTC’s AND IF Passenger
Squib 1 open is NOT an active code.
Passenger Squib 1 is live;
Passenger Squib 2 was used.
If neither of the following codes is an active code:
ACTIVE DTC
SQUIB STATUS
Passenger squib 1 open
Passenger squib 2 open
Status of Airbag is
Unknown.
CAUTION: Deployed Front Air Bags may or
may not have live pyrotechnic material within
the air bag inflator. Do not dispose of Driver
and Passenger Airbags unless you are sure
of complete deployment. Please refer to the
Hazardous Substance Control System for
Proper Disposal. Dispose of deployed air
bags in a manner consistent with state,
provincial, local, and federal regulations.
3.1.4
PASSENGER AIRBAG ON-OFF
SWITCH
The Passenger Airbag On-Off Switch allows the
customer to turn the passenger airbag function ON
or OFF. The switch assembly is mounted to the
console armrest compartment. The Off indicator is
located in the center stack at the top of the Gauge
Pack so the OFF indicator will be visible to both
front seat occupants.
WARNING: ALWAYS CHECK THE PASSEN-
GER AIRBAG ON-OFF SWITCH POSITION
BEFORE DRIVING THE VEHICLE. A SWITCH
IN THE WRONG POSITION INCREASES THE
RISK OF SERIOUS PERSONAL INJURY OR
DEATH IN A COLLISION.
The OFF indicator will be illuminated whenever
the ACM senses the On - Off switch is in the OFF
position or for 2 seconds at ignition on for an
indicator test. To illuminate the Off indicator the
ACM provides the ground. The ACM also monitors
the Off indicator circuit for an open or short condi-
tions. If DTC’s become active the Airbag Warning
Indicator in the cluster will be illuminated by the
ACM via a PCI Bus message to the cluster.
To operate the switch, insert the ignition key into
the switch keyhole, push key in to release the
internal plunger, and rotate to the desired switch
position. The spring-loaded locking plunger pre-
vents the user from leaving the key in the switch.
The key will be automatically ejected when force is
not applied. The ignition key is the only key or
object that should ever be inserted into the switch.
The ACM continuously monitors the resistance of
the Passenger Airbag On - Off Switch circuits to
identify the switch position and provide circuit
diagnostics. The on - off switch ON position resis-
tance 175 to 190 ohms and the OFF position resis-
tance is 820 to 870 ohms. If the on - off switch
circuits are open, shorted to ground or battery the
ACM will set active and stored DTC’s. Upon receiv-
ing a switch diagnostic trouble code the airbag
warning indicator, in the instrument cluster, will be
turned on by the ACM. Whenever the Airbag warn-
ing indicator is illuminated, the ACM should be the
first module interrogated.
WARNING: IGNORING THE AIRBAG WARN-
ING
INDICATOR
IN
YOUR
INSTRUMENT
PANEL COULD MEAN THE PASSENGER
AIRBAG ON-OFF SWITCH IS NOT FUNC-
TIONAL AND THE AIRBAG MAY DEPLOY IF
AN
IMPACT
OCCURS.
IF
THE
AIRBAG
WARNING INDICATOR TURNS ON WHILE
DRIVING, THE AIRBAG ON - OFF SWITCH
SETTING WILL REMAIN FUNCTIONAL FOR
THAT KEY CYCLE. IF THE AIRBAG WARNING
INDICATOR COMES ON AGAIN AT THE NEXT
KEY ON AND STAYS LIT FOR MORE THAN
6-8 SECONDS, THE ACM WILL DEFAULT TO
PASSENGER AIRBAG ON. FAILURE TO TAKE
THE
PROPER
PRECAUTIONS
COULD
RESULT
IN
ACCIDENTAL
AIRBAG
DEPLOYMENT AND PERSONAL INJURY OR
DEATH.
3.1.5
SEAT BELT TENSIONER (SBT)
Front seat belt systems incorporate seat belt
Tensioner (SBT). At the onset of an impact event
each tensioner uses a pyrotechnic device, which is
triggered simultaneously with the airbags, to rap-
idly retract the seat belts. With the slack removed,
the occupant’s forward motion in an impact will be
reduced as will the likelihood of contacting interior
components. The ACM module monitors the Seat
Belt Tensioners circuit resistance and reports active
and stored DTC’s if any problem is found.
3.1.6
SEAT BELT SWITCHES (SBS)
The hall-effect driver and front passenger seat
belt switches provide the seat belt status, buckled
or unbuckled, via hardwired inputs to the ACM.
5
GENERAL INFORMATION