Dodge 2006 Sprinter, Manual

Page: 995 / 2315

Com m u n ica t ion In t er fa ce (SCI) da t a bu s lin e for su p-
plem en t a l r est r a in t syst em pr ogr a m m in g or dia gn o-
sis a n d t est in g t h r ou gh t h e 16-wa y Da t a Lin k
Con n ect or (DLC) loca t ed on t h e da sh pa n el below t h e
dr iver side en d of t h e in st r u m en t pa n el. A h a r d wir ed
ou t pu t fr om t h e ACM is u sed for con t r ol of t h e a ir ba g
in dica t or in t h e E lect r oMech a n ica l In st r u m en t Clu s-
t er (E MIC). (Refer t o 8 - E LE CTRICAL/INSTRU-
ME NT
CLUSTE R/AIRBAG INDICATOR -
OP E RATION).
Th e ACM m icr opr ocessor con t in u ou sly m on it or s a ll
of t h e su pplem en t a l r est r a in t syst em elect r ica l cir-
cu it s t o det er m in e t h e syst em r ea din ess. If t h e ACM
det ect s a m on it or ed syst em fa u lt , it set s a n a ppr opr i-
a t e Dia gn ost ic Tr ou ble Code (DTC) a n d sen ds a n ou t -
pu t t o t h e E MIC t o t u r n on t h e a ir ba g in dica t or. Th e
ACM illu m in a t es t h e in dica t or for a bou t fou r secon ds
ea ch t im e t h e ign it ion swit ch is t u r n ed t o t h e On
posit ion a s a bu lb t est . If t h e in dica t or r em a in s illu -
m in a t ed for a bou t t en secon ds a ft er t h e ign it ion
swit ch is t u r n ed t o t h e On posit ion , t h e ACM h a s
det ect ed a n on -cr it ica l fa u lt t h a t poses n o da n ger t o
t h e veh icle occu pa n t s. If t h e a ir ba g in dica t or illu m i-
n a t es solid (n ot fla sh in g) wh ile dr ivin g or st a ys on
lon ger t h a n t en secon ds followin g t h e bu lb t est , t h e
ACM h a s det ect ed a cr it ica l fa u lt t h a t m a y ca u se t h e
a ir ba gs n ot t o deploy wh en r equ ir ed or t o deploy
wh en n ot r equ ir ed. An a ct ive fa u lt on ly r em a in s for
t h e du r a t ion of t h e fa u lt , or in som e ca ses, for t h e
du r a t ion of t h e cu r r en t ign it ion swit ch cycle, wh ile a
st or ed fa u lt ca u ses a DTC t o be st or ed in m em or y by
t h e ACM.
Th e ACM r eceives ba t t er y cu r r en t t h r ou gh a fu sed
ign it ion swit ch ou t pu t cir cu it . Th e ACM r eceives
gr ou n d t h r ou gh a gr ou n d cir cu it a n d t a ke ou t of t h e
veh icle wir e h a r n ess. Th is t a ke ou t h a s a n eyelet t er-
m in a l con n ect or secu r ed by a n u t t o a gr ou n d st u d on
t h e floor pa n el dir ect ly below t h e ACM wit h in t h e
dr iver side sea t r iser. A ca se gr ou n d is a lso pr ovided
for t h e ACM t h r ou gh a gr ou n d cir cu it a n d eyelet t er-
m in a l con n ect or secu r ed u n der t h e left r ea r ACM
m ou n t in g scr ew. Th ese con n ect ion s a llow t h e ACM t o
be oper a t ion a l wh en ever t h e ign it ion swit ch is in t h e
On posit ion .
Th e ACM a lso con t a in s a n en er gy-st or a ge ca pa ci-
t or. Wh en t h e ign it ion swit ch is in t h e On posit ion ,
t h is ca pa cit or is con t in u a lly bein g ch a r ged wit h
en ou gh elect r ica l en er gy t o deploy t h e su pplem en t a l
r est r a in t com pon en t s for u p t o on e secon d followin g a
ba t t er y discon n ect or fa ilu r e. Th e pu r pose of t h e
ca pa cit or is t o pr ovide ba cku p su pplem en t a l r est r a in t
syst em pr ot ect ion in ca se t h er e is a loss of ba t t er y
cu r r en t su pply t o t h e ACM du r in g a n im pa ct .
Two sen sor s a r e con t a in ed wit h in t h e ACM, a n
elect r on ic im pa ct sen sor a n d a sa fin g sen sor. Th ese
elect r on ic sen sor s a r e a cceler om et er s t h a t sen se t h e
r a t e of veh icle deceler a t ion , wh ich pr ovide ver ifica -
t ion of t h e dir ect ion a n d sever it y of a n im pa ct . On
m odels equ ipped wit h opt ion a l side cu r t a in a ir ba gs,
t h e ACM a lso m on it or s in pu t s fr om t wo r em ot e side
im pa ct sen sor s loca t ed wit h in t h e left a n d r igh t fr on t
door st ep wells t o con t r ol deploym en t of t h e side cu r-
t a in a ir ba g u n it s.
Th e sa fin g sen sor is a n elect r on ic a cceler om et er
sen sor wit h in t h e ACM t h a t pr ovides a n a ddit ion a l
logic in pu t t o t h e ACM m icr opr ocessor. Th e sa fin g
sen sor is u sed t o ver ify t h e n eed for a su pplem en t a l
r est r a in t deploym en t by det ect in g im pa ct en er gy of a
lesser m a gn it u de t h a n t h a t of t h e pr im a r y elect r on ic
im pa ct sen sor s, a n d m u st exceed a sa fin g t h r esh old
in or der for t h e a ir ba gs t o deploy. Veh icles equ ipped
wit h opt ion a l side cu r t a in a ir ba gs fea t u r e a secon d
sa fin g sen sor wit h in t h e ACM t o pr ovide con fir m a -
t ion t o t h e ACM m icr opr ocessor of side im pa ct for ces.
Th is secon d sa fin g sen sor is a bi-dir ect ion a l u n it t h a t
det ect s im pa ct for ces fr om eit h er side of t h e veh icle.
P r e-pr ogr a m m ed decision a lgor it h m s in t h e ACM
m icr opr ocessor det er m in e wh en t h e deceler a t ion r a t e
a s sign a led by t h e im pa ct sen sor s a n d t h e sa fin g sen -
sor s in dica t e a n im pa ct t h a t is sever e en ou gh t o
r equ ir e su pplem en t a l r est r a in t syst em pr ot ect ion .
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 t h e pr oper elect r ica l sign a ls t o deploy t h e fr on t
a ir ba gs a n d sea t belt t en sion er s a n d, if t h e veh icle is
so equ ipped, eit h er side cu r t a in a ir ba g u n it .
Th e ACM a lso pr ovides a h a r d wir ed elect r ica l
cr a sh sign a l ou t pu t followin g a su pplem en t a l
r est r a in t deploym en t even t . Th is ou t pu t is u sed t o
sign a l ot h er elect r on ic m odu les in t h e veh icle t o pr o-
vide t h eir
en h a n ced a cciden t r espon se fea t u r es,
wh ich in clu de a u t om a t ica lly disa blin g t h e en gin e
fr om r u n n in g a n d u n lockin g a ll of t h e door s. H ow-
ever, t h ese r espon ses a r e ea ch depen den t u pon t h e
cir cu it s, com pon en t s, a n d m odu les con t r ollin g t h ese
fea t u r es r em a in in g in t a ct fr om colla t er a l da m a ge
in cu r r ed du r in g t h e veh icle im pa ct .
A sin gle ACM is u sed for a ll va r ia t ion s of t h e su p-
plem en t a l r est r a in t syst em a va ila ble in t h is veh icle.
Th is ACM is pr ogr a m m a ble a n d in or der t o fu n ct ion
pr oper ly it m u st be pr ogr a m m ed for t h e cor r ect veh i-
cle su pplem en t a l r est r a in t syst em equ ipm en t u sin g
a n in it ia liza t ion pr ocedu r e. Th e in it ia liza t ion pr oce-
du r e r equ ir es t h e u se of a dia gn ost ic sca n t ool. Refer
t o t h e a ppr opr ia t e dia gn ost ic in for m a t ion . Th e h a r d
wir ed in pu t s a n d ou t pu t s for t h e ACM m a y be dia g-
n osed a n d t est ed u sin g con ven t ion a l dia gn ost ic t ools
a n d pr ocedu r es. H owever, con ven t ion a l dia gn ost ic
m et h ods will n ot pr ove con clu sive in t h e dia gn osis of
t h e ACM or t h e su pplem en t a l r est r a in t syst em . Th e
m ost r elia ble, efficien t , a n d a ccu r a t e m ea n s t o dia g-
n ose t h e ACM or t h e su pplem en t a l r est r a in t syst em
r equ ir es t h e u se of a dia gn ost ic sca n t ool. Refer t o
t h e a ppr opr ia t e dia gn ost ic in for m a t ion .
VA RESTRAINTS 8O - 9