Toyota Celica 1993 AT200 series Repair Manual page 290

For chassis & body
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AX-1 1
A U T O M A T I C T R A N S A X L E _ T R O U B L E S H O O T I N G
T R O U B L E S H O O T I N G
G E N E R A L I N F O R M A T I O N
T r o u b l e o c c u r r i n g i n t h e E C T c a n s t e m f r o m o n e o f t h r e e s o u r c e s ; t h e e n g i n e , t h e E C T o l s c t r o n i c
c o n t r o l u n i t o r t h e t r a n s a x l e i t s e l f . B e f o r e t r o u b l e s h o o t i n g ,
d e t e r m i n o i n w h i c h o f t h e s e t h r s e
s o u r c e s t h e p r o b l e m l i e s . a n d b e g i n t r o u b l e s h o o t i n g w i t h t h e s i m p l e s t o p e r a t i o n , g r a d u a l l y
w o r k i n g u p i n o r d e r o f d i f f i c u l t Y .
B A S I C T R O U B L E S H O O T I N G
B e f o r e t r o u b l e s h o o t i n g t h e E C T , f i r s t d e t e r m i n e w h 6 t h e r t h e p r o b l e m i s e l e c t r i c a l o r m e c h a n i c a l .
To do this, just refer to the basic troubleshooting flow-chart provided below'
l f t h e c a u s e i s a l r e a d y k n o w n , u s i n g t h e b a s i c t r o u b l e s h o o t i n g
c h a r t b e l o w a l o n g w i t h t h e g o n B r a l
t r o u b l e s h o o t i n g c h a r t o n t h e f o l l o w i n g p a g e s h o u l d s p 6 o d t h e p r o c e d u r e
P r e l i m i n a r y C h e c k
{ S e e p a g e A X 1 4 )
B a d
R e p a i r o r
Replace
OK
Read Diagnostic Code
( S e e p a g e A X - T 7 )
OK
M a n u a l S h i f t i n g T e s t
( S e e p a g e A X 2 2 )
B a d
M e c h a n i c a l S y s t e m T e s t s
( S e e p a g e A X 3 4 )
OK
B a d
Electrical Control System Check
l S e e p a g e A X 2 3 )
F e p a i r T r a n s a x l e
OK
8 a d
B a d
R e p a i r o r R e p l a c e
\ r e u
P d g Y
h ^ - e e ,

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