Toyota Celica 1993 AT200 series Repair Manual page 595

For chassis & body
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B R - 8 0
B i
BRAKE SYSTEM _ ANTI-LOCK BRAKE SYSTEM (A
3
" A B S " w a r n i n g l i g h t g o e s
o n a n d O F F .
. C h e c k f o r s h o r t c i r c u i t i n w i r e h a r n e s s b e t w e e n t e r m i n a l T c o r T s a n d E 1 o f c h e c k c o n n e c t o r .
4
a
a
B r a k e s p u L
B r a k i n g i n e l f i c i e n t .
A B S o p e r a t e s d u r i n g n o r m a l b r a k i n g .
A B S o p e r a t e s j u s t b e f o r e s t o p p i n g d u r i n g n o r m a l b r a k i n g .
B r a k e p e d a p u l s a t e s a b n o r m a l l y w h i l e A B S i s o p e r a t i n g .
Y E S
( A b n o r m a I
c h a n g e )
N O
( N o c h a n g e )
C o n t i n u e d o n n e x t p a g e .
P u l l o u t t h e s h o r t p i n a n d c o n n e c t t e r m i n a l s T c
a n d E t o f t h e c h e c k c o n n e c t o r .
D o e s w a r n i n g l i g h t s h o w t h e n o r m a l c o d e ?
( l g n i t i o n s w i t c h e d O N )
S e e d i a g n o s t i c t r o u b l e c o d e .
l s e a c h s p e e d s e n s o r i n s t a l l e d i n p l a c e ?
A n d i s e a c h i n s t a l l a t i o n b o l t t i g h t e n e d s e c u r e l y ?
Speed sensor installation fau lty.
T r y s p e e d s e n s o r a n d d e c e l e r a t i o n s e n s o r
d a g n o s i s s y s t e m . l s s e n s o r s i g n a l l e v e l O K ?
Inspect speed sensor. and replace if necessary.
T r y s p e e d s e n s o r a n d d e c e l e r a t i o n s e n s o r
d i a g n o s i s s y s t e m . l s s e n s o r s i g n a l c h a n g e O K ?
Inspect sensor rotor, and replace if necessary.
D i s c o n n e c t c o n n e c t o r s t r o m E C U , i n s p e c t
c o n t r n u i t y b e t w e e n e a c h s p e e d s e n s o r t e r m i n a l s
o n w i r e h a r n e s s s i d e .
D o e s a n y a b n o r m a l c h a n g e o c c u r i n c o n t i n u i t y
w h e n t h e c o n n e c t o r s o r w i r e h a r n e s s o f t h e
s p e e d s e n s o r a n d i n t e r m e d i a t e c o n n e c t o r s a r e
twisted or bent?
F a u l t y w i r e h a r n e s s .

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