Checking The Lighting System - Yamaha XF50W Service Manual

EAS00788

CHECKING THE LIGHTING SYSTEM

1. The headlight and the high beam indicator
light fail to come on.
1. Headlight bulb and socket
• Check the headlight bulb and socket for con-
tinuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS"
• Are the headlight bulb and socket OK?
YES
V
2. High beam indicator light bulb and socket
• Check the high beam indicator light bulb and
socket for continuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS"
• Are the high beam indicator light bulb and
socket OK?
YES
V
NO
*
Replace the headlight
bulb, socket or both.
NO
4
Replace the high beam
indicator light bulb ,
socket or both.
LIGHTING SYSTEM
3. Voltage
• Connect the pocket tester (DC 20 V) to the
headlight and high beam indicator light cou-
plers as shown.
AWhen the dimmer switch is set to " % "
BWhen the dimmer switch is set to " & "
Headlight
Positive tester probe
2
Negative tester probe
Headlight coupler
DC 20V
- © +
High beam indicator light
Positive tester probe
Negative tester probe
Meter assembly coupler
DC20V
• Set the main switch to "ON".
• Start the engine.
• Set the dimmer switch to %0" or %0".
• Measure the voltage (DC 12 V) of
yellow©(green (2)) on the headlight coupler
and yellow©
coupler(wire harness side).
• Is the voltage within specification?
8-30
ELEC
yellow 1 or green
black/green 3
A
1 1
| G^L | G^L
-> yellow (4)
-» black/green
Fn
B
G/W 1 Br
n Ch Dg
B/G
Lg
G 1
1
©
on the meter assembly
+i
®
©
Y