Dodge Sprinter 2006 Manual page 2068

24 - 36 CONTROLS - REAR
m ot or, wh ile r ela y 2 wh en a ct iva t ed, sen ds power
dir ect ly t o t h e blower m ot or.
Th e r ea r blower m ot or swit ch ca n n ot be 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 BLOWER MOTOR SWITCH
Befor e t est in g t h e r ea r blower m ot or swit ch , ver ify
t h a t t h e fr on t A/C syst em is fu n ct ion a l by per for m in g
t h e ATC F u ct ion Test u sin g t h e DRBIII
Use a volt /oh m m et er t o t est t h e r ea r blower m ot or
swit ch . F or cir cu it descr ipt ion s a n d dia gr a m s, r efer
t o t h e a ppr opr ia t e wir in g in for m a t ion . Th e wir in g
in for m a t ion in clu des wir in g dia gr a m s, pr oper wir e
a n d con n ect or r epa ir pr ocedu r es, det a ils of wir e h a r-
n ess r ou t in g a n d r et en t ion , con n ect or pin -ou t in for-
m a t ion a n d loca t ion views for t h e va r iou s wir e
h a r n ess con n ect or s, splices a n d gr ou n ds.
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, impact sensor, or instrument panel com-
ponent diagnosis or service. Disconnect and isolate
the battery negative (ground) cable, then wait two
minutes for the system capacitor to discharge
before performing further diagnosis or service. This
is the only sure way to disable the supplemental
restraint system. Failure to take the proper precau-
tions 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) Un plu g t h e wir e h a r n ess con n ect or fr om t h e
r ea r blower m ot or swit ch .
(3) Ch eck for con t in u it y bet ween t er m in a l 10 a n d
t er m in a ls 1, 7 a n d 4 of t h e blower m ot or swit ch . In
a ll in st a n ces, t h er e sh ou ld be con t in u it y.
NOTE: To check the switch's internal circuits, con-
nect the negative lead of the ohmmeter to terminal
10 and the positive ohmmeter lead to terminals 1, 7
and 4. To check the switch's integral light emitting
diodes, reverse the ohmmeter leads.
(4) Ch eck for con t in u it y bet ween t h e r ea r blower
m ot or swit ch t er m in a ls 3 a n d 7 a s you m ove t h e
blower m ot or swit ch t o ea ch of t h e t wo speed posi-
t ion s, a n d t h e Off posit ion . Th er e sh ou ld be con t in u -
it y in on ly on e blower m ot or swit ch speed posit ion .
(5) Ch eck for con t in u it y bet ween t h e r ea r blower
m ot or swit ch t er m in a ls 4 a n d 8 a s you m ove t h e
blower m ot or swit ch t o ea ch of t h e t wo speed posi-
t ion s, a n d t h e Off posit ion . Th er e sh ou ld be con t in u -
it y in on ly t h e ot h er blower m ot or swit ch speed
posit ion .
(6) If OK, t est a n d r epa ir t h e r ea r blower m ot or
swit ch wir e h a r n ess cir cu it s. If n ot OK, r epla ce t h e
fa u lt y r ea r blower m ot or swit ch .
REMOVAL
WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
sca n t ool.
steering wheel, steering column, airbag, seat belt
tensioner, impact sensor, or instrument panel com-
ponent diagnosis or service. Disconnect and isolate
the battery negative (ground) cable, then wait two
minutes for the system capacitor to discharge
before performing further diagnosis or service. This
is the only sure way to disable the supplemental
restraint system. Failure to take the proper precau-
tions could result in accidental airbag deployment.
NOTE: The rear A/C blower motor switch is used on
vehicles with the optional rear A/C system.
(1) Discon n ect a n d isola t e t h e n ega t ive ba t t er y
ca ble.
(2) Rem ove t h e a ccessor y swit ch pa n el fr om t h e
in st r u m en t pa n el (Refer t o 23 - BODY/INSTRU-
ME NT PANE L/ACCE SSORY SWITCH
RE MOVAL).
(3) Discon n ect t h e wir e h a r n ess con n ect or fr om t h e
r ea r A/C blower m ot or swit ch (F ig. 14).
(4) Disen ga ge t h e r et a in in g t a bs a n d r em ove t h e
r ea r A/C blower m ot or swit ch fr om t h e a ccessor y
swit ch pa n el.
VA
BE ZE L -