Rain Sensor Control Module; Description; Operation; Removal - Dodge Sprinter 2006 Manual

VA
RAI N SEN SOR CON T ROL M OD-
U LE

DESCRIPTION

Fig. 11 Rain Sensor Control Module

1 - RAIN SENSOR CONTROL MODULE

2 - CONNECTOR RECEPTACLE
3 - MOUNTING TAB (2)
Th e Ra in Sen sor Con t r ol Modu le (RSCM) is t h e
pr im a r y com pon en t of t h e a u t om a t ic wiper syst em
(F ig. 11). Th e RSCM is secu r ed wit h t wo scr ews a n d
n u t s t o a br a cket loca t ed u n der t h e in st r u m en t pa n el
a bove t h e t h r ot t le peda l wit h in t h e pa ssen ger com -
pa r t m en t . Th e r ect a n gu la r m olded pla st ic h ou sin g of
t h e RSCM h a s a n in t egr a l m ou n t in g t a b on ea ch side
a n d a n in t egr a l con n ect or r ecept a cle on on e en d,
wh ich con t a in s t h e m odu le t er m in a l pin s. Th ese t er-
m in a l pin s con n ect t h e RSCM 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 in st r u m en t pa n el wir in g. Con cea led a n d pr o-
t ect ed wit h in t h e RSCM h ou sin g is t h e elect r on ic cir-
cu it r y of t h e m odu le.
Th e RSCM ca n n ot be r epa ir ed a n d, if da m a ged or
fa u lt y, t h e en t ir e m odu le m u st be r epla ced.
OPERA TION
Th e m icr opr ocessor-ba sed Ra in Sen sor Con t r ol
Modu le (RSCM) is on ly u sed in veh icles equ ipped
wit h a n opt ion a l a u t om a t ic wiper syst em . Th e RSCM
m on it or s in pu t s fr om t h e ign it ion swit ch , t h e wiper
a n d wa sh er swit ch cir cu it r y of t h e m u lt i-fu n ct ion
swit ch on t h e st eer in g colu m n , t h e pa r k swit ch
wit h in t h e wiper m ot or, a n d t h e r a in sen sor on t h e
in side of t h e win dsh ield gla ss. Ba sed u pon t h ese
in pu t s t h e RSCM sen ds t h e pr oper con t r ol ou t pu t s t o
t h e wiper m ot or a n d t h e wa sh er pu m p m ot or t o pr o-
vide a ll of t h e r equ est ed wiper a n d wa sh er syst em
fu n ct ion s.
Th e RSCM oper a t es on ba t t er y cu r r en t r eceived
fr om a fu se in t h e fu se block on a fu sed ign it ion
swit ch ou t pu t (r u n -st a r t ) cir cu it so t h a t t h e RSCM
will oper a t e wh en ever t h e ign it ion swit ch is in t h e
On or St a r t posit ion s. Th e RSCM r eceives gr ou n d a t
a ll t im es t h r ou gh it s con n ect ion t o t h e in st r u m en t
pa n el wir e h a r n ess. It is im por t a n t t o n ot e t h a t t h e
defa u lt con dit ion for t h e wiper syst em is a u t om a t ic
wiper s Off; t h er efor e, if n o in pu t is r eceived fr om t h e
r a in sen sor by t h e RSCM, t h e a u t om a t ic wiper s will
be disa bled a n d t h e RSCM will defa u lt t h e wiper a n d
wa sh er syst em t o n or m a l m a n u a l oper a t ion for con -
t in u ou s low or h igh speed wiper or wa sh er m ode.
Th e h a r d wir ed RSCM cir cu it s m a y be 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.
H owever, con ven t ion a l dia gn ost ic m et h ods m a y n ot
pr ove con clu sive in t h e dia gn osis of t h e in t er n a l cir-
cu it r y of t h e RSCM. Refer t o t h e a ppr opr ia t e wir in g
in for m a t ion .

REMOVAL

WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
steering wheel, steering column, airbag, seat belt
tensioner, or instrument panel component diagno-
sis or service. Disconnect and isolate the battery
negative (ground) cable, then wait two minutes for
the system capacitor to discharge before perform-
ing further diagnosis or service. This is the only
sure way to disable the supplemental restraint sys-
tem. Failure to take the proper precautions could
result in accidental airbag deployment.
(1) Discon n ect a n d isola t e t h e ba t t er y n ega t ive
ca ble.
(2) Loca t e t h e r a in sen sor con t r ol m odu le on a
br a cket u n der t h e in st r u m en t pa n el a bove t h e t h r ot -
t le peda l (F ig. 12).
WIPERS/WASHERS 8R - 15