Side Impact Sensor Description; Operation - Dodge Sprinter 2006 Manual

VA
(9) Rein st a ll t h e gr a b h a n dle on t o t h e h ea dlin er.
(Refer t o 23 - BODY/INTE RIOR/ASSIST H ANDLE -
INSTALLATION).
(10) Rein st a ll t h e t r im on t o t h e in side of t h e B-pil-
la r. (Refer t o 23 - BODY/INTE RIOR/B-P ILLAR TRIM
- INSTALLATION).
(11) Rein st a ll t h e pin ch welt t o t h e fr on t door
open in g (F ig. 44).
(12) Do n ot r econ n ect t h e ba t t er y n ega t ive ca ble a t
t h is t im e. Th e su pplem en t a l r est r a in t syst em ver ifi-
ca t ion t est pr ocedu r e sh ou ld be per for m ed followin g
ser vice of a n y su pplem en t a l r est r a in t syst em com po-
n en t . (Refer t o 8 - E LE CTRICAL/RE STRAINTS -
STANDARD P ROCE DURE - VE RIF ICATION TE ST).
SI DE I M PACT SEN SOR
DESCRIPTION
Fig. 51 Side Impact Sensor
1 - MOUNTING FLANGE (2)
2 - IMPACT SENSOR
3 - CONNECTOR RECEPTACLE
On veh icles equ ipped wit h t h e opt ion a l side cu r t a in
a ir ba gs, t wo side im pa ct sen sor s a r e u sed, on e ea ch
for t h e left a n d r igh t sides of t h e veh icle (F ig. 51).
Th ese sen sor s a r e m ou n t ed r em ot ely fr om t h e bi-di-
r ect ion a l sa fin g sen sor t h a t is in t er n a l t o t h e Air ba g
Con t r ol Modu le (ACM). Th e side im pa ct sen sor s a r e
ea ch secu r ed wit h t wo scr ews t o t h e for wa r d ver t ica l
su r fa ce of t h e r igh t a n d left fr on t door st ep wells a n d
con cea led beh in d t h e st ep well t r im pa n elin g wit h in
t h e pa ssen ger com pa r t m en t .
Th e im pa ct sen sor h ou sin g h a s a n in t egr a l con n ec-
t or r ecept a cle a n d t wo in t egr a l m ou n t in g fla n ges, on e
a t t h e t op a n d on e a t t h e bot t om . An a r r ow on t h e
sen sor h ou sin g pr ovides a visu a l ver ifica t ion of t h e
pr oper or ien t a t ion of t h e u n it , a n d sh ou ld a lwa ys be
poin t ed t owa r d t h e ou t boa r d side of t h e veh icle. A
ca vit y in t h e cen t er of t h e m olded pla st ic im pa ct sen -
sor h ou sin g con t a in s t h e elect r on ic cir cu it r y of t h e
sen sor, wh ich in clu des a n elect r on ic com m u n ica t ion
ch ip a n d a n elect r on ic im pa ct sen sor. P ot t in g m a t e-
r ia l fills t h e ca vit y t o sea l a n d pr ot ect t h e in t er n a l
elect r on ic cir cu it r y a n d com pon en t s. Th e side im pa ct
sen sor s a r e ea ch con n ect ed t o t h e veh icle elect r ica l
syst em t h r ou gh a dedica t ed t a ke ou t a n d con n ect or of
t h e veh icle wir e h a r n ess.
Th e side im pa ct sen sor s ca n n ot be r epa ir ed or
a dju st ed a n d, if da m a ged or fa u lt y, t h ey m u st be
r epla ced.
OPERA TION
Th e side im pa ct sen sor s a r e elect r on ic a cceler om e-
t 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 ovides ver ifica t ion of t h e dir ect ion a n d sever it y of
a n im pa ct . E a ch sen sor a lso con t a in s a n elect r on ic
com m u n ica t ion ch ip t h a t a llows t h e u n it t o com m u -
n ica t e t h e sen sor st a t u s a s well a s sen sor fa u lt in for-
m a t ion t o t h e m icr opr ocessor in t h e Air ba g Con t r ol
Modu le (ACM). Th e ACM m icr opr ocessor con t in u -
ou sly m on it or s a ll of t h e pa ssive 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 Dia gn ost ic Tr ou ble Code (DTC) a n d con t r ols t h e
a ir ba g in dica t or oper a t ion a ccor din gly.
Th e im pa ct sen sor s ea ch r eceive ba t t er y cu r r en t
a n d gr ou n d t h r ou gh dedica t ed left a n d r igh t sen sor
plu s a n d m in u s cir cu it s fr om t h e ACM. Th e im pa ct
sen sor s a n d t h e ACM com m u n ica t e by m odu la t in g
t h e volt a ge in t h e sen sor plu s cir cu it . Th e h a r d wir ed
cir cu it s bet ween t h e side im pa ct sen sor s a n d t h e
ACM m a y be dia gn 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
con clu sive in t h e dia gn osis of t h e ACM or t h e im pa ct
sen sor s. 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 gn ose t h e im pa ct sen sor s, t h e ACM, a n d
t h e elect r on ic m essa ge com m u n ica t ion bet ween t h e
sen sor s a n d t h e ACM 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 .
RESTRAINTS 8O - 39
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