Toyota ZZT230 series Repair Manual page 342

INSPECTION PROCEDURE
' J
HI N T: Read f r e eze f r a me dat a usi n g
t h e engi n e condi t i o ns when the mal f u nct i o n i s
whet h er t h e vehi c l e was runni n g o
at the
time
Check operation of stop light.
1
PREPARATI O N:
Check i f t h e st o p l i g ht s go on and of f n
Check STP signal.
2
)
Brake Pedal
Depressed
et
) c::J
TOYOTA
of t h e mal f u n c ti o n.
r stopped, the engine warmed up or not, the air-fuel ratio lean or rich, etc.
Brake Pedal
(+)
STP
ENGINE
DIAGNOSTICS
,
e c t
hand-held tester or OBD tJ scan tooL Because freeze frame
d te e d when troubleshooting
m
al l
y
or when the brake
Check and re p ai r stop l i g ht ci r cui t ( S ee page
BE-- 3 3).
When usi n g TOYOTA hand-hel d t e st e r:
PREPARATI O N:
(a ) Connect the to the DLC3.
Turn the ignition switch
(b )
CHECK:
ter main switch
si g nal on
OK: Brake pedal I s depressed: STP
Read the STP
Brake pedal i s rel e ased: S
When not usi n g TOYOTA hand-hel d tester:
PREPARATI O N:
i g ni t i o n
CHECK:
Turn the switch
OK:
Check voltage between terminal
Brake pedal
A09102
Depressed
Released
01-3 ).
i t i s usef u l f o r det e rmi n i n g
p l i s
ed
a operated and released.
ON TOYOTA
and
ON.
TOYOTA
the hand-held
ON
OFF
•••
T
P
•••
ON.
STP
of ECM and body ground.
Below 1.5 V
01-131
r s
c
r
e o
d
hand-held tes-
.
t s
r
t e
e
Voltage