Mazda 121 - Page 228

F
SELF-DIAGNOSIS
FUNCTION
CODE
NO.I
09
(WATER THERI'OSENSOR}
STEP
tNSPECTTOI{
ACTION
1
ls there a
poor
conneciion
in waler
thermosen_
nepair or
leplace
wrnng
2 ls there
continuity
between
waler lhermosensor
and
ECU?
ECU
A
(R/L)
20
(R/L)
B
C/i
G)
2D
CYi
G)
Go lo
nexl step
3
ls resistance
of
water lhermosensor
correcf
Coolant
lemp.
Fesislance
(kO)
,200c
(
-40D
14.6
17.A
20.c
(
68'D
2.21-2.69
80.c
076'R
0.29-0.35
No Beplace
waler
thermosensor
ls same
Code
No.
prcsent
iollowing afler_repair
F
Pag€
F-67
Water themosensor
and crcuit
OK
5
Arc ECU
termlnals
2D and
20 voltages corrcct?
c7
page
F-l16
n"pru".
tCu
17
Psge
F_112
Check
for shotl
circuil
in wiring
trom
water themosensor
lo ECU
Circult
DiaEram
ECU
THROTTIE
SENSOR
MOSENOR
WATEB
fHEFTMOSENSOF
re
@
re
@
\lB
)i
IER
THER
ll
F-72