Mazda 121 - Ignition System Troubleshooting

IGNITION SYSTEM
TNOUBLESHOOTING
6
fi6tire
JTEF
|lrsPEcTtoN
ACTION
ls
"00
'
displayed
on
Self-Diagnosis
Checker
with igniton swilch ON?
.?
p.ge
F-67
llallunction
code no. displayed
Check lor cause
(Beler
to specified
check sequence)
E7
Page
F-67
"8a"
tlash€s
Check
ECU leminal
lF voltage
t7
psge
F-114
Vollag6: Approl
l2v
(lgnilioh
switch
ON)
4
li
OK,
replace ECU
(j
page
F-112
+
lf nol OK, check
wiring
harness
belween ECU and
Self Diagnosis
2 Bemove spark
plugi
is
there
a
slrong
blue spark
whie engine
is
cranking?
lgn tion syslem
is
normal
Check spark
pug r?
gage
G-2O
lf OK, Go lo next step
lf not OK, clean or
.eplace spark
plug
3 ls resistance ot high-tension
leads OK?
specification:
16 m
per
lm
(3.28
tl)
c?
page
G-23
Rep ac€ high tension
leads
Afe there corroslon, damage or cracks on lhe
disrribulor cap and
rotof
17
page
c-23
5
ls ignitron coil nomal,
(7
page
G-2O
6 Are disrributor connector and
ECU
connector
Measure
voltage
ot
@
termlnal
(dislibutor rop
connector);
is il
coffec?
Voltage:
Apprcr. l2v
Check
main luse,
ignition switch,
wiflng
harness, and ECU
I
ls ECU normal?
l?
page
F-r12
Replace
ECU
G-l7