Chrysler 2005 Sebring, Service Manual, Page: 2664 / 3204

r espon d t o m essa ges “a ddr essed” t o it t h r ou gh a
bin a r y codin g pr ocess. Th is m et h od of da t a t r a n s-
m ission sign ifica n t ly r edu ces t h e com plexit y of t h e
wir in g in t h e veh icle a n d t h e size of wir in g h a r-
n esses. All of t h e in for m a t ion a bou t t h e fu n ct ion in g
of a ll t h e syst em s is or ga n ized, con t r olled a n d
com m u n ica t ed by t h e P CI bu s, wh ich is descr ibed in
t h e Veh icle Com m u n ica t ion sect ion of t h is Gen er a l
In for m a t ion .
Alwa ys begin by r ea din g t h e dia gn ost ic t r ou ble
codes u sin g t h e DRBIII
"
. Next , look for t h e sym p-
t om in t h e Dia gn ost ic In for m a t ion a n d P r ocedu r es
sect ion of t h e Ta ble of Con t en t s loca t ed in t h e fr on t
of t h e book. Th is will dir ect you t o t h e specific t est s
t h a t m u st be per for m ed.
Im p o rta n t N o te :
If t h e P ower t r a in Con t r ol Modu le h a s been
ch a n ged a n d t h e cor r ect VIN a n d m ilea ge h a ve n ot
been pr ogr a m m ed, a DTC will be set in t h e Air ba g
m odu le. In a ddit ion , if t h e veh icle is equ ipped wit h
a Sen t r y Key Im m obilizer Modu le (SKIM), Secr et
Key da t a m u st be u pda t ed t o en a ble st a r t in g. Refer
t o t h e 2004 J R P ower t r a in Dia gn ost ic Ma n u a l for
m or e in for m a t ion . E r a se codes in a ll m odu les.
3.1 AIRBAG SYSTEM
Th e J R Air ba g Syst em con t a in s t h e followin g
com pon en t s: t wo t ypes of Occu pa n t Rest r a in t Con -
t r oller or (ORC), ba se a n d pr em iu m , Air ba g Wa r n -
in g In dica t or, Clockspr in g, Dr iver a n d P a ssen ger
Du a l Squ ib Air ba gs, Sea t belt Ten sion er s, Left a n d
Righ t Side Im pa ct Sen sor s, a n d Cu r t a in (r oof
m ou n t ed) Air ba gs. Th e (ORC) is a n ew t ype of
Air ba g Con t r ol Modu le (ACM) t h a t su ppor t s st a ged
a ir ba g deploym en t . Th e t er m Air ba g Con t r ol Mod-
u le or ACM will be u sed t h r ou gh ou t t h e a ir ba g
dia gn ost ic sect ion a n d in t h e Dia gn ost ic Rea dou t
Box or DRB III
" . Th e Ba se ACM ca n be iden t ified
by t h e pr esen t of a sin gle yellow 23 - wa y con n ect or.
Th is m odu le su ppor t s t h e Dr iver a n d P a ssen ger
Sea t Belt Ten sion er s a n d du a l squ ib a ir ba gs.
Th e ACM h a s fou r m a jor fu n ct ion s: P CI Bu s
com m u n ica t ion s, on boa r d dia gn ost ics, im pa ct sen s-
in g, a n d com pon en t deploym en t . Th e ACM sen ds
a n d/or r eceives P CI Bu s m essa ges wit h t h e In st r u -
m en t Clu st er (MIC), Body Con t r ol Modu le (BCM),
a n d P ower t r a in Con t r ol Modu le (P CM). Dia gn ost ic
t r ou ble codes will be set if t h e com m u n ica t ion wit h
t h ese m odu les is lost or con t a in s in va lid in for m a -
t ion . If t h e ACM det ect s a m on it or ed syst em fa u lt , it
sen ds a m essa ge t o t h e in st r u m en t clu st er via P CI
bu s t o t u r n on t h e Air ba g Wa r n in g In dica t or. Th e
ACM ca n set bot h a ct ive a n d st or ed dia gn ost ic
t r ou ble codes t o a id in t h e dia gn osin g syst em pr ob-
lem s. See DIAGNOSTIC TROUBLE CODE S in t h is
sect ion .
Th e ACM h a s a n in t er n a l a cceler om et er t h a t
sen ses t h e r a t e of veh icle deceler a t ion , wh ich pr o-
vides ver ifica t ion of t h e dir ect ion a n d sever it y of a n
im pa ct . A pr e-pr ogr a m m ed decision a lgor it h m in
t h e ACM m icr opr ocessor det er m in es wh en t h e de-
celer a t ion r a t e is sever e en ou gh t o r equ ir e a ir ba g
syst em pr ot ect ion . Th e ACM a lso u ses t h e cr a sh
sever it y t o det er m in e t h e level of dr iver a n d fr on t
pa ssen ger deploym en t , st a ged deploym en t low m e-
diu m or h igh . St a ged deploym en t is t h e a bilit y t o
t r igger a ir ba g syst em squ ib in fla t or s a ll a t on ce or
in dividu a lly a s n eeded t o pr ovide t h e a ppr opr ia t e
r est r a in t for t h e sever it y of t h e im pa ct . Wh en t h e
pr ogr a m m ed con dit ion s a r e m et , t h e ACM sen ds a n
elect r ica l sign a l t o deploy t h e a ppr opr ia t e a ir ba g
syst em com pon en t s. Th e ACM st or es en ou gh elec-
t r ica l en er gy t o deploy t h e a ir ba g com pon en t s for
t wo secon ds followin g a ba t t er y discon n ect or fa il-
u r e du r in g a n im pa ct .
Th e P r em iu m ACM ca n be iden t ified by t h e
pr esen t of a t wo yellow 32 - wa y con n ect or s a n d t h e
pr esen t s of side cu r t a in a ir ba g. In a ddit ion t o t h e
ba se syst em com pon en t s a n d DTC’s t h e pr em iu m
ACM su ppor t s t h e Side Im pa ct Sen sor s, side Cu r-
t a in Air ba gs. In a ddit ion t o t h e ACM a cceler om et er
t h e pr em iu m m odu le u ses Side Im pa ct Sen sor s t o
iden t ify t h e dir ect ion a n d sever it y of a side im pa ct
a n d deploy t h e a ppr opr ia t e side cu r t a in a ir ba g. In
a ddit ion t o t h e ba se ACM DTCs t h e pr em iu m ACM
pr ovides DTC’s for t h e a ddit ion a l cir cu it a n d com -
pon en t .
Bot h m odu les a r e secu r ed t o t h e floor pa n el
t r a n sm ission t u n n el bet ween t h e fr on t sea t s in side
t h e veh icle. Air ba g Con t r ol Modu les ca n n ot be r e-
pa ir ed or a dju st ed a n d m u st be r epla ced.
2
GEN ERAL I N FORM AT I ON