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POWER WINDOWS
8S - 1
POWER WINDOWS
CONTENTS
Page
SERVICE PROCEDURES
4
GENERAL INFORMATION
Power w i n d o w motors a r e o f t h e permanent mag-
net type. A positive a n d negative battery connection
to either o f t h e t w o motor t e r m i n a l s w i l l cause t h e
motor to rotate i n one d i r e c t i o n . Reversing c u r r e n t
t h r o u g h these same t w o connections w i l l cause t h e
motor t o rotate i n t h e opposite direction.
B o t h motors are grounded t h r o u g h t h e master
switch by a black w i r e attached t o the ground stud
w h i c h is located o n the back o f t h e i n s t r u m e n t panel,
on t h e r i g h t side o f the steering column.
Page
TEST PROCEDURES
1
I t i s necessary t h a t t h e w i n d o w be free t o slide u p
and down i n t h e glass channels or tubes a n d tracks.
I f t h e w i n d o w i s n o t free t o move u p a n d down, t h e
w i n d o w motor w i l l n o t be able t o move t h e glass.
The most positive w a y t o determine i f the glass is
free is t o disconnect t h e electric window regulator l i f t
a r m sliders from t h e glass l i f t channels a n d t h e n
slide t h e w i n d o w u p a n d d o w n b y hand.
A less positive method i s t o shake t h e glass i n t h e
door, ( w i t h glass positioned between the u p a n d down
stop positions). I f t h e glass w i l l move s l i g h t l y from
side t o side, front t o rear, a n d u p a n d down, t h e n
there i s a good chance t h a t t h e window is n o t bound
t i g h t i n t h e t r a c k s .
T E S T P R O C E D U R E S
INDEX
Page
Page
Circuit Breaker Test
1
Switch Voltage Test
1
Switch Test
3
Window Motor Test
3
SWITCH VOLTAGE TEST
The
following w i r i n g
test sequence
determines
whether or n o t voltage i s continuous t h r o u g h t h e
body harness t o switch.
A f t e r r e m o v i n g left door s w i t c h from t r i m panel for
testing purposes, carefully separate m u l t i p l e t e r m i -
n a l block o n w i r i n g harness from switch body. Con-
nect one lead o f test l i g h t t o black ( B K ) w i r e
t e r m i n a l a n d touch other test l i g h t lead to t a n ( T N )
w i r e t e r m i n a l . I f t h e test l i g h t comes on, t h e w i r i n g
c i r c u i t between t h e b a t t e r y a n d switch is functional.
I f l i g h t does n o t come o n , check 30 a m p c i r c u i t
breaker, or for a broken w i r e o r poor ground.
CIRCUIT BREAKER TEST
Locate t h e c i r c u i t breaker i n fuse cavity number 2
on fuse block. P u l l o u t s l i g h t l y b u t be sure t h a t cir-
c u i t breaker t e r m i n a l s s t i l l contact t e r m i n a l s i n fuse
block. Connect ground w i r e o f voltmeter t o a good
ground. W i t h probe o f v o l t m e t e r positive w i r e , check
b o t h t e r m i n a l s o f c i r c u i t breaker for battery voltage.
I f only one t e r m i n a l checks a t battery voltage, circuit
breaker is defective a n d m u s t be replaced. I f neither
t e r m i n a l shows battery voltage, check for open or
shorted c i r c u i t t o c i r c u i t breaker.
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