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Sym DD 50 Service Manual

Sym DD 50
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15. ELECTRICAL EQUIPMENT
15-11
Electrical System Circuit Inspection
Pulse Generator / Exciting Coil
Remove body cover.
Disconnect alternator connector.
Resistance Measurement: (20)
Pulse generator coil (blue/yellow - ground):
50~200Ω
Exciting (yellow - ground): 400~800Ω
CDI Electrical System Circuit Inspection
Remove front cover.
Disconnect the CDI set connector, and check its
circuit to diagnosis related ignition components.
CDI Electrical System Circuit Inspection
ITEM Measure at:
Standard (at 20)
Main Switch Black/white-green Continuity as main switch OFF
Exciter Coil Black/Red-Green 400 ~800
Pulse Generator Blue/Yellow-green 50 ~200
Primary Black/yellow-green 0.21±10%
Green-high voltage cable -w/o Cap 3~5K
Ignition Coil
Secondary
Green-high voltage cable - w/ Cap 7~12K
y If above checks are in normal but spark plug is still no spark. Then it probable causes from CDI set
or high voltage coil.
y If abnormal circuits are found in above checks, at first check all items, and then check each item one
by one.
AC generator
harness connector
C.D.I.
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Sym DD 50 Specifications

General IconGeneral
BrandSym
ModelDD 50
CategoryScooter
LanguageEnglish

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