Yamaha YP250 5GM2-AE1 2000 Service Manual page 87

YP805022
3. The taillight fails to come on.
1. Bulb and bulb socket
Refer to "CHECKING SWITCHES" section.
2. Voltage
S Connect the pocket tester (DC20 V) to the
bulb socket connector.
Tester (+) lead !
Blue terminal
1
Tester (–) lead !
Black terminal 2
S Turn the main switch to on.
S Turn the lights switch to on or pilot position.
S Check the voltage (12 V) on the bulb socket
connector.
This circuit is not faulty.
CONTINUITY
MEETS
SPECIFICATION
LIGHTING SYSTEM
NO CONTINUITY
Replace the bulb and/or bulb socket.
OUT OF SPECIFICATION
The wiring circuit from main switch to bulb
connector is faulty. Repair.
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ELEC