Yamaha 2002 YFM350X, Supplemental Service Manual

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ELEC
SIGNAL SYSTEM
CHECKING THE SIGNAL SYSTEM
1.If the tail/brake light fails to come on:
CONTINUITY
1.Bulb and bulb socket
●
Check the bulb and bulb socket for continu-
ity.
NO CONTINUITY
Replace the bulb and/or bulb socket.
CONTINUITY
2.Brake light switches
Refer to “CHECKING THE SWITCH”.
NO CONTINUITY
Replace the brake switch.
3.Voltage
●
Connect the pocket tester (DC 20V) to the
bulb socket connector.
Tester (+) lead
→
Yellow terminal
1
Tester (–) lead
→
Black terminal
2
MEETS
SPECIFICATION
●
Turn the main switch to “ON”.
●
Check the voltage (12 V) of the “Yellow”
lead on the bulb socket connector.
This circuit is not faulty.
OUT OF SPECIFICATION
The wiring circuit from the main switch to the
bulb socket connector is faulty, repair it.