Checking The Lighting System - Yamaha YFM660FP Service Manual

EB805020

CHECKING THE LIGHTING SYSTEM

1.If the headlights fail to come on:
1.Bulb and bulb socket
Check the bulb and bulb socket for continu-
●
ity.
2.Voltage
Connect the pocket tester (DC 20 V) to the
●
headlight couplers.
È
Tester (+) lead →
Green terminal 1 or Yellow terminal 2
Tester (–) lead → Black terminal 3
È
When the lights switch is on "LO".
É
When the lights switch is on "HI".
Turn the main switch to "ON".
●
Turn the lights switch to "LO" or "HI".
●
Check the voltage (12 V) of the "Green"
●
and "Yellow" leads on the bulb socket con-
nector.
This circuit is not faulty.
CONTINUITY
É
MEETS
SPECIFICATION
LIGHTING SYSTEM
NO CONTINUITY
Replace the bulb and/or bulb socket.
OUT OF SPECIFICATION
The wiring circuit from the main switch to the
bulb socket connector is faulty, repair it.
9 - 30
– +
ELEC