Toyota Celica 1993 AT200 series Repair Manual page 616

B R - 1 0 1
3 F 1 3 ! 2
BRAKE SYSTEM - A N T I _ L O C K B R A K E S Y S T E M ( A
A N T I - L O C K B R A K E S Y S T E M
C I R C U I T
SYSTEM CIRCUIT INSPECTION
1. INSPECT SYSTEM CIRCUIT WITH CONNECTOR
C O N N E C T E D
( a )
( b )
Rsmove th6 ABS ECU.
Using a voltmetor with high impedance (1 0 k O/V
minimum), maasure the voltage at each terminal and
body ground.
S F L R
I G 1
S F L H I G N O
rffi
lr'll#++r
|l-]-1-#
It-trfrf++r
l4-4#F
*T--r-
|
I
I S R R R I
R S S
S R R H G N D
J.""J"%;F;;]
S,R
SFRH
] M R
S F R R I
-l_L-L-..]-
- f - f
l l n l I
rFrfr'-]ff.fil
l l l l l l l
r-r-t-l I lt
+++H+l
i I t - r - r
Ft- | AST
SRLH
WA SRLR
Roeoc2
_---':=---1-
C o n d i t i o n
"ou",l'J!""
I
t.ouon t""
S F R H
V o l t a g e
l G s w i t c h O N a r d
" A B S " w a ' n i n g l i g h t g o € s O F F 1 0 - 1 4 V
Actuator
Solenoid rslay
wiring harn€ss
SFRR
V o l t a g s
l G s w i t c h O N a n d
" A B S " w a r n i n g l i g h t g o e s O N
ABS ECU
Solenoid rslay
wiring hErn6ss
l G s w i t c h O N a n d
" A B S " w a r n i n g l i g h t g o e s O F F 9 - 1 4 V
FR_
C o n l i n u i t y
Continuity
A B S E C U
wiring harness
S R L H
Voltage t G s w i l c r - O N a r d
" A B S w a r n i n g l , g h t g o e s O F F
r 0 - 1 4 v
Solenoid relay
wiring herness
SR LR
v o l t a g e
lG switch ON and
"ABS" warning light goes ON
l G s w t c h O N a n d " A B S " w a r . i n g l : g h t g o e s O F F
B e l o w 1 . 5 V
A B S E C U
" A B S ' w a r n i n g
light wiring harness
1 0 - 1 4 V
F L -
Contlnuity
l G s w i t c h O F F
C o n t i n u i t y
A 8 S E C U
wrnng harness
R-
RL-
V o l t a g e
l G s w i t c h O N a n d c h e c k c o n n e c t o r T s E r n o l c o n n e c t e d
1 0 - 1 4 V
l G s w i t c h O N a n d c h e c k c o n n e c t o r T s E 1 c o n n e c l e d
B e l o w 1 . 0 V
P K A
V o l t a g e
l G s w i t c h O N a n d P K B l e v e r P u l l e d
E e l o w 1 . 5 V
P a r k i n g b r a k o
s w r t c h b r a k e w a l n l n g
l i g h t w i r i n g h e r n e s s
l G s w i t c h O N a n d P K B l e v e r r e t u r n e d
1 0 - 1 4 V
rG1
v o l l a g e
l G s w i t c h O N
1 0 - 1 4 V
E C U - l G F u s e
G N D
C o n l i n u i t y
l G s w i t c h O F F
C o n l i n u i t y
W i r i n g h a r n e s s
SFLR
SFLH
V o l t a g e
l G s w i l c h O N a n d
" A B S " w a r n l n g l i g h t g o e s O F F
1 0 - 1 4 V
Acluator
Solenoid relay
wiring harness
RR-
Continuity l G s w i l c h O F F
C o n t i n u i l y
1 0 - ' t 4 v
Ab*r 0 V
1 0 - 1 4 V
Abort O V
A 8 S € C U
wrnng narness
Tc V o l t a g e
l G s w i t c h O N a n d c h e c k c o n n e c t o r T c E r n o l c o n n e c t e d
------------G
swrtct" otl a"d checr co"necro. rc- r'connecr€o
V o l t a g 6
l G s w i t c h O N a n d
" A B S " w a r n r n g l i g h t s g o e s O F F
l G s w i l c h O N e n d
" A B S " w a r n i n g l i g h t s g o e s O N