Dodge Sprinter 2006 Manual page 901

VA
en er gizes t h e t im in g cir cu it of t h e r ea r win dow defog-
ger m odu le wh ich t h en a ct iva t es t h e r ea r win dow
defogger (E BL) r ela ys. Th e E BL r ela ys con t r ols t h e
cu r r en t flow t o t h e r ea r win dow defogger gr ids. Th e
E BL syst em will oper a t e for a ppr oxim a t ely five m in -
u t es or u n t il t h e r ea r win dow defogger swit ch or ign i-
t ion swit ch is t u r n ed off. Refer t o 8 - E LE CTRICAL/
H E ATE D GLASS - DIAGNOSIS AND TE STING for
dia gn osis a n d t est in g of t h e r ea r win dow defogger
swit ch .
Th e r ea r win dow defogger
r epa ir ed a n d, if fa u lt y or da m a ged, it m u st be
r epla ced.
DI AGN OSI S AN D T EST I N G
REAR WINDOW DEFOGGER SWITCH
WARNING: On vehicles equipped with airbags, dis-
able the airbag system before attempting any steer-
ing wheel, steering column, or instrument panel
component diagnosis or service. Disconnect and
isolate the battery negative (ground) cable, then
wait two minutes for the airbag system capacitor to
discharge before performing further diagnosis or
service. This is the only sure way to disable the air-
bag system. Failure to take the proper precautions
could result in an accidental airbag deployment and
possible personal injury.
NOTE: The rear window defogger switch may be
tested in the vehicle or out of the vehicle, on a
bench.
NOTE: For circuit descriptions and diagrams of the
rear window defogger system, refer to 8W - WIRING
DIAGRAM INFORMATION.
(1) Rem ove t h e r ea r win dow defogger swit ch fr om
t h e in st r u m en t pa n el, bu t lea ve t h e swit ch con n ect ed
(Refer t o 8 - E LE CTRICAL/H E ATE D GLASS/RE AR
WINDOW DE F OGGE R SWITCH - RE MOVAL).
(2) Tu r n t h e ign it ion swit ch ON.
(3) Usin g a volt m et er, ch eck for ba t t er y volt a ge a t
P in 3 of t h e r ea r win dow defogger swit ch (F ig. 6).
(a ) If OK, go t o St ep 4.
(b) If NOT OK, ch eck fu se 7 (15 a m p) in fu se
block #1. If fu se is OK, ch eck t h e wir in g cir cu it s.
Refer t o 8W - WIRING DIAGRAM INF ORMA-
TION.
(4) Ch eck P in 7, wit h defogger swit ch in t h e On
posit ion t h er e sh ou ld be ba t t er y volt a ge a n d, n o volt -
a ge wit h t h e swit ch in t h e Off posit ion .
(a ) If OK, go t o St ep 5.
swit ch ca n n ot be
(b) If NOT OK, n o volt a ge in t h e On posit ion or
volt a ge in t h e Off posit ion , r epla ce t h e r ea r win dow
defogger swit ch .
(5) P r ess t h e defogger swit ch t o t h e On posit ion .
Th e in dica t or la m p sh ou ld com e on a n d r em a in on
for a ppr oxim a t ely 5 m in u t es.
(a ) If OK, in st a ll t h e r ea r win dow defogger
swit ch (Refer t o 8
GLASS/RE AR WINDOW DE F OGGE R SWITCH -
INSTALLATION).
(b) If NOT OK, go t o St ep 6.
(6) Ch eck P in 9, wit h defogger swit ch in t h e On
posit ion t h er e sh ou ld be ba t t er y volt a ge.
(a ) If OK, go t o St ep 7.
(b) If NOT OK, ch eck t h e wir in g cir cu it s. Refer
t o 8W - WIRING DIAGRAM INF ORMATION.
(7) Ch eck P in 10 for a good gr ou n d.
(a ) If OK, r epla ce t h e r ea r win dow defogger
swit ch .
(b) If NOT OK, ch eck t h e wir in g cir cu it s. Refer
t o 8W - WIRING DIAGRAM INF ORMATION.
Fig. 6 Rear Window Defogger Switch Connector
HEA TED GLASS 8G - 5
- E LE CTRICAL/H E ATE D