Yamaha EF3000iSE Service Manual page 119

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Subcoil AC voltage inspection
Start the engine.
Measure the voltage between the Orange leads
of the subcoil 1
.
L
L O
L
O
L O
O
1
SWL4180
Subcoil AC voltage:
13.5 ~ 23.0 V
GOOD
Economy switch continuity inspection
" → Continuity
Switch "ON" "
" → No Continuity
Switch "OFF" "
GOOD
Wire harness inspection
Check the terminal of the connector for contami-
nation or rust, and the connector for proper con-
nection.
GOOD
Replace the control unit.
GENERATOR SYSTEM
O L
O L
TOO LOW
DOES NOT GENERATE
DISCONNECTED
DISCONNECTED
Magnetic force is weak.
Replace the generator assembly.
Subcoil resistance inspection
Stop the engine.
Measure the resistance between the Orange to
Orange lead. (Tester range: Ω × 1)
L
L
O
O
SWL4190
Subcoil resistance:
0.17 Ω ± 20% at 20 °C (68 °F)
GOOD
Replace the generator assembly.
Replace the economy switch.
Connect or replace the connector.
4-21
–
ELEC
L
O
L
O
DISCONNECTED/
SHORT CIRCUIT
+