Mazda 121 - Page 200

F
TROUBLESHOOTING
GUIDE
t sPEcTto
acfloll
7 Connect
Systern Seleclor
to diagnosis connector
and set
T€st Swilch to
'SELF
TEST"
ls ignition
timing conect at
idle alt€r warm_up?
ri'
p.ge
F--62
lgnnlon
tlmlng:
BTOC 16
+
l"
INDICATOR
Does
ignltion tming
advance
when
accelerating?
+
ll
advances,
go
lo
ne)d step
+
ll
not advan6,
replace
ECU
s
pag€
F-112
NO
8
Are arr duct
and air
hoses correctly installed?
Go to
nexl step
NO
R€pair
9 ls
exhaust system
rest cted?
(t
p.ge F-1t7
NO
10 Try known
good ECU and ch€ck if conditEn
F-44