Mitsubishi Eclipse Workshop Manual page 226

"16-14
IGNITION SYSTEM -
Service
Adjustment
Procedures
\\svll-
Spark
plug
cable
WAVEFORM INSPECTION WITH ANALYZER
(SECoNDARY AND pRtMARy
VOLTAGE WAVE-
FORM OF
rGNrflONl
INSPECTION OF SECONDARY VOLTAGE OF
IGNITTON
O
Measurement method
(1) Clamp
SECONDARY
NOTE
1.
The ignition voltage
peak appears reversely between
when the spark plug cables of the cylinders
No.
2
and
No.
4
are clamped and when those of the cylinders No.
1 and No.
3
are clamped.
2.
Since
the
2-cylinder simultaneous ignition system
is
employed.
the
waveform
for
two
cylinders
appears
group by
group when the
waveform
is
observed.
(Cylinder No. 1
-
cylinder No. 4. cylinder No.
2
-
cylinder No.
3
as
the
respective
groups) Here.
the
waveform
is
observed for the cylinder whose spark plug
cable is clamped with the secondary pickup.
(2) Clamp the spark plug cable with the trigger
pickup.
NOTE
1.
Clean the spark plug cable
of
cylinder No. 1 or
*o.
I
which
belongs
to
the
same group of the
cylinder'
clamped with the secondary pickup.
2.
Though
it
is
difficult
to
isolate
the
cylinder
of
the-
waveform, the waveform of the
cylinder clamped
wittJ
the secondary pickup is
stable. Use
this
as a reference
for
isolation.
PICKUP
around spark plug
cable
O
|D
Mltrublrhi trloton Corpoodon
AoL 13gf
i"'r.!T,-+n{j;
.i
PUYT'EgOlO