Operation; Seat Belt Tensioner Description - Dodge Sprinter 2006 Manual

8O - 32 RESTRAINTS
ou t a n d con n ect or of t h e veh icle wir e h a r n ess loca t ed
wit h in t h e dr iver side fr on t sea t r iser.
Th e sea t belt swit ch ca n n ot be a dju st ed or r epa ir ed
a n d, if fa u lt y or da m a ged, t h e en t ir e dr iver side sea t
belt bu ckle u n it m u st be r epla ced.
OPERA TION
Th e sea t belt swit ch is design ed t o con t r ol a pa t h
t o gr ou n d for t h e sea t belt swit ch sen se in pu t of t h e
E lect r o-Mech a n ica l In st r u m en t Clu st er (E MIC). Th e
sea t belt swit ch con t a ct is a ct u a t ed by t h e sea t belt
la t ch pla t e bein g in ser t ed in t o t h e bu ckle. Wh en t h e
sea t belt la t ch pla t e is in ser t ed in t o t h e bu ckle fa r
en ou gh t o be en ga ged by t h e sea t belt bu ckle la t ch ,
t h e swit ch lea f con t a ct open s t h e sea t belt swit ch
sen se cir cu it gr ou n d pa t h ; a n d, wh en t h e sea t belt
la t ch pla t e is r elea sed a n d ext r a ct ed fr om t h e sea t
belt bu ckle la t ch t h e swit ch lea f con t a ct is r elea sed,
closin g t h e cir cu it t o gr ou n d.
Th e sea t belt swit ch is con n ect ed is ser ies bet ween
gr ou n d a n d t h e sea t belt swit ch sen se in pu t of t h e
in st r u m en t clu st er. Th e sea t belt swit ch r eceives
gr ou n d a t a ll t im es t h r ou gh it s pigt a il wir e con n ec-
t ion t o t h e veh icle wir e h a r n ess fr om a n ot h er t a ke
ou t of t h e veh icle wir e h a r n ess. An eyelet t er m in a l
con n ect or on t h e veh icle wir e h a r n ess gr ou n d t a ke
ou t is secu r ed u n der a n u t t o a gr ou n d st u d loca t ed
on t h e floor pa n el wit h in t h e dr iver side fr on t sea t
r iser. Th e sea t belt swit ch m a y de dia gn osed u sin g
con ven t ion a l dia gn ost ic t ools a n d m et h ods.
SEAT BELT T EN SI ON ER
DESCRIPTION
Fig. 38 Seat Belt Tensioner
1 - TURNING LOOP
2 - LATCH PLATE
3 - LOWER ANCHOR
4 - RETRACTOR
5 - TENSIONER
F r on t sea t in g posit ion sea t belt t en sion er s su pple-
m en t t h e st a n da r d dr iver a n d opt ion a l pa ssen ger a ir-
ba gs for a ll ver sion s of t h is m odel. Wh en equ ipped,
t h e sea t belt t en sion er is in t egr a l t o t h e fr on t sea t
belt a n d r et r a ct or u n it s, wh ich a r e secu r ed t o t h e
in n er B-pilla r s of t h e veh icle (F ig. 38). E a ch r et r a ct or
is con cea led ben ea t h t h e m olded pla st ic B-pilla r t r im .
Th e sea t belt t en sion er con sist s pr im a r ily of a t u bu -
la r st eel h ou sin g, a pist on , a ca ble, a t or sion ba r, a n d
a sm a ll pyr ot ech n ica lly a ct iva t ed ga s gen er a t or. All of
t h ese com pon en t s a r e loca t ed on on e side of t h e
r et r a ct or spool on t h e ou t side of t h e r et r a ct or h ou sin g
except for t h e t or sion ba r, wh ich ser ves a s t h e spin -
dle u pon wh ich t h e r et r a ct or spool r ot a t es. Th e sea t
belt t en sion er is con t r olled by t h e Air ba g Con t r ol
Modu le (ACM) a n d is con n ect ed t o t h e veh icle elec-
t r ica l syst em t h r ou gh a dedica t ed t a ke ou t of t h e
veh icle wir e h a r n ess by a keyed, sn a p-fit m olded
pla st ic con n ect or in su la t or t o en su r e a secu r e con n ec-
t ion .
Th e sea t belt t en sion er ca n n ot be r epa ir ed a n d, if
fa u lt y or da m a ged, t h e en t ir e fr on t sea t belt a n d
r et r a ct or u n it m u st be r epla ced. If t h e fr on t a ir ba gs
h a ve been deployed, t h e sea t belt t en sion er s h a ve
a lso been deployed. Th e sea t belt t en sion er is n ot
in t en ded for r eu se a n d m u st be r epla ced followin g a
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