Grand Caravan FWD V6-3.3L VIN 3 Flex Fuel (2002)
Airbag Squib Status
1. Using a DRB III, read Airbag DTC's. If the following active codes are present:
2. If neither of the following codes is an active code:
ACTIVE DTC ................................................................................................................................................................................ SQUIB STATUS
Passenger squib 1 open .................................................................................................................................................. Status of Airbag is Unknown
Passenger squib 2 open .................................................................................................................................................. Status of Airbag is Unknown
SEAT BELT TENSIONER (SBT)
The driver and passenger seat belt (buckle) tensioners are mounted to the inboard side of the front seats. The seat belt buckle and seat belt switch are
connected directly to the seat belt tensioner cable. At the onset of an impact event the ACM uses the seat belt tensioner to rapidly retract the seat belt
buckles. With the slack removed, the occupant's forward motion in an impact will be reduced as will the likelihood of contacting interior components.
The seat belt tensioner cannot be removed, the occupant's forward motion in an impact will be reduced as will the likelihood of contacting repaired, if
damaged or defective it must be replaced. The ACM continuously monitors the resistance of the seat belt tensioner circuits an open or shorted
conditions.
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. If the
seat belt switches are damaged or defective the seat belt tensioner must be replaced. The ACM continuously monitors the seat belt switch circuits for
an open or shorted conditions.
SIDE IMPACT AIRBAG CONTROL MODULE (SIACM)
Supplemental driver and front passenger seat airbags provide side impact protection for the front seat occupants. Each side airbag has it own side
impact airbag control module (SIACM) to provide independent impact sensing and deployment. SIACM are located on the left and right B post just
above the seat belt retractor. Both the left and right side impact airbag control modules (SIACM) use the same part number. However, for proper PCI
bus operation each SIACM must have a unique module identification. To provide the unique module identification for both, left and right, the SIACM
software looks for a ground on cavity 5 of the SIACM connector. If cavity 5 is grounded the SIACM communicates as a left SIACM otherwise it
communicates as a right SIACM. The SIACM performs self diagnostics and circuit tests to determine if the system is functioning properly. If the test
finds a problem the SIACM will set both active and stored diagnostic trouble codes. If a DTC is active the SIACM will request that the airbag warning
lamp be turned on. The results of the system test are transmitted on the PCI Bus to the ACM once each second or on change in lamp state. If the
warning lamp status message from the either SIACM contains a lamp on request, the ACM will set an active DTC. At the same time as the DTC is set
the ACM sends a PCI Bus message to the mechanical instrument cluster (MIC) requesting the airbag warning lamp be turned on. Observe all ACM
warning and caution statements when servicing or handling the SIACM. SIACM are not repairable and must be replaced if they are dropped.
WARNING: THE AIRBAG SYSTEM IS A SENSITIVE, COMPLEX ELECTROMECHANICAL UNIT. BEFORE ATTEMPTING TO
DIAGNOSE OR SERVICE ANY AIRBAG SYSTEM OR RELATED STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT
PANEL COMPONENTS YOU MUST FIRST DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE. WAIT
TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE FURTHER SYSTEM SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO DO THIS COULD RESULT IN ACCIDENTAL AIRBAG
DEPLOYMENT AND POSSIBLE PERSONAL INJURY. NEVER STRIKE OR KICK THE AIRBAG CONTROL MODULE, AS IT CAN
DAMAGE THE IMPACT SENSOR OR AFFECT ITS CALIBRATION. IF AN AIRBAG CONTROL MODULE IS ACCIDENTALLY
DROPPED DURING SERVICE, THE MODULE MUST BE SCRAPPED AND REPLACED WITH A NEW UNIT.
The airbag warning lamp is the only point at which the customer can observe symptoms of a system malfunction. Whenever the ignition key is turned
