Lighting System Check - Yamaha TTR250L Service Manual

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NB286170

LIGHTING SYSTEM CHECK

1.The headlight and "HIGH BEAM" indica-
tor light do not come on.
1.Bulb and bulb socket
Check the bulb and bulb socket for conti-
nuity.
NB286180
2.Voltage
Connect the pocket tester (DC 20 V) to
the headlight couplers.
Turn the main switch to "ON".
Turn the "LIGHTS" switch to the "ON"
position.
Check for voltage (12 V) on the "Yellow"
lead at the bulb socket connector.
This circuit is good.
CONTINUITY
MEETS
SPECIFICATION
7 - 29
LIGHTING SYSTEM
NO CONTINUITY
Replace the bulb and/or bulb socket.
Headlight:
Tester (+) lead → Yellow 1 lead
Tester (–) lead → Black 2 lead
OUT OF SPECIFICATION
Wiring circuit from main switch to bulb
socket connector is faulty, repair.
+
ELEC

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