Checking The Lighting System - Yamaha TW125 1999 Service Manual

EAS00784
5. Dimmer switch
S Check the dimmer switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the dimmer switch OK?
YES
EAS00787
7. Wiring
S Check the entire lighting system's wiring.
Refer to "CIRCUIT DIAGRAM".
S Is the lighting system's wiring properly con-
nected and without defects?
YES
Check the condition
of each of the lighting
system's circuits.
Refer to "CHECKING
THE LIGHTING
SYSTEM".
NO
The dimmer switch is
faulty. Replace the
left handlebar switch.
NO
Properly connect or
repair the lighting
system's wiring.
LIGHTING SYSTEM
EAS00788

CHECKING THE LIGHTING SYSTEM

1. The headlight and the high beam indicator
light fail to come on.
1. Headlight bulb and socket
S Check the headlight bulb and socket for con-
tinuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
S Are the headlight bulb and socket OK?
YES
2. Voltage
S Connect the pocket tester (DC 20 V) to the
headlight and high beam indicator light cou-
plers as shown.
When the dimmer switch is set to "
A
B When the dimmer switch is set to "
7-25
ELEC
NO
Replace the head-
light bulb, socket or
both.
".
".