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+
ELEC
IGNITION SYSTEM
NOTE:
If there is no spark or the spark is weak,
continue with the ignition system test.
If a good spark is obtained, the problem is
not with the ignition system, but possibly
with the spark plug(s) or another compo-
nent.
1. Measure:
CDI unit output peak voltage
Below specification → Measure the
charge coil output peak voltage or
replace the CDI unit.
CDI unit output peak voltage:
Black/White (B/W) – Black (B)
Unloaded
r/min
Cranking
V
—
2. Measure:
Charge coil output peak voltage
Below specification → Replace the
charge coil.
Charge coil output peak voltage:
Black/Red (B/R) – Blue (L)
Unloaded
r/min
Cranking
V
90
Brown (Br) – Black/Red (B/R)
Unloaded
r/min
Cranking
V
20
Test harness (3-pin):
YB-06769/90890-06769
7-8
Loaded
2,000
3,500
95
100
100
Loaded
2,000
3,500
90
95
95
Loaded
2,000
3,500
20
45
65
E
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