Yamaha YBR125 Custom, Service Manual

Page: 205 / 218

Lighting system
ELEC
Inspection of lighting system
1.Headlamp and high-beam indicator of headlamp are not lit.
Check if the bulb and socket are conducted.
2.Voltage
Headlamp:
Positive guide wire of multitester → Yellow or
green guide wire.
Negative guide wire of multitester
→ Black guide
wire
"High beam indicator of headlamp
Positive guide wire of multitester
→ Yellow guide
wire
Negative guide wire of multitester → Black guide
wire
"
Turn the switch to "ON".
Turn the "garden light"switch to"ON".
Turn the dimmer switch of "headlamp" to "HI" or "LO".
Check if the voltage of socket connector between the green
and the yellow wire gets to 12V.
Meet normal valur (12V)
This circuit is normal.
Poor lagout from main switch to the socket,
The repair is needed.
1.Bulb and socket
Connect Min. multitester(DC20V)to branch
-connector of headlamp and to that of indicator.
When the dimmer switch of headlamp lies in lower
beam poisition
When the dimmer switch of headlamp lies in high
beam position
Replace the bulb or socket
No conduction
Conduction
2.
1.
The instrument light is not lit
Bulb and socket
Check if the bulb and the socket are conducted.
Replace bulb or socket.
No conduction
Conduction
7-29
Out of normal value