Mazda 121 - Blower Switch; Headlight Switch; Water Thermoswitch Circuit; Rear Defroster Switch

SELF-DIAGNOSIS
FUNCTION
Blower
switch
PC:
.Blower
switch
malfunclion
GeJer
to Seclion
T)
.dpen
ctrcurl
in ||e wrr'ng
haness
kom blower
sw tch lo
ECU term,na
(1S)
.ECU
teminal
(1S)
maltunciion
(Reier
to
Page
F
114)
'Iun
blower
switch
to ON
position
ls monitor
lamp
illuminated?
Headlight
switch
PC:
.Headlisht
switch
malfunclion
(Reier
io Sedion
T)
.Open
crrcuil
In
w n19
harness lrom
headlighr
swich
lo Ecu
ieminal
(1u)
.ECU
termrnal
(1U)
mallunction
(Feler
to
Page
F-l16)
Tum ON
headllght
switch
ls monrlor
lamp
illominated?
Headllghl
sw(ch
oK
Tum OFF
headlighl
swdch
Water
thermoswiich
circult
(not
included
in switch
insPeclion)
Warninq
I'iie
c'ootins
r"n operates
when
the
diagnosls
connector
termlnals
TFA
tnd GND are
connect-
ed with
a
iumper
ttrire'
Use caution.
PC.
.
Felay malfuncton
{Beler
lo Section
E)
.Open
circlit
ln wire
harness
from
watef thermo_
swrlch
lo engine
control
Linrl
.Enqrns
control
unt
lelminal
1R
malluncliof
Connect
diagnosis
connector
telminals
TFA
and GND
V€rity
lhat monilor
lamp
ill'rmlnates
Water
themoswitch
ckcuit
is OK
Dlsconnecl
a
jumper
wrrc
Rea.
defroster
swilch
rc:
.Fear
delroster
swich
malfunclion
(Befer
to Seclion
T)
.bpen
circuit
in wldns
harness from
fear
defroster
switch to
ECU teminal
(1T)
.ECU
terminal
(1T) maliuncton
(Reier to
page
F-114)
Tum
ON rear
deffosler
switch
ls
monitor
lamp illuminated?
Bear
deirosier
switch
OK
Turn OFF
rear delioster
swlch
Inhlbitor
switch
(ATx)
PC:
.hhlbiior
switch
malllnct|on
iReter
to Section
K)
.Open
ot shol
crrcuil
n relaled wnng
harness
.ECU
terminal
(1V)
maLfuncton
(Beter
lo
page
F
116)
Shiti
lransmission
inlo
gear
ls monitor
lamp
lluminated?
lnhilitor
swilch
OK
Shlfl
into
"P
or
"N
range
F-42