ELEC
• Check the headlight bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”
• Are the headlight bulb and socket OK?
LIGHTING SYSTEM
CHECKING THE LIGHTING SYSTEM
1. The headlight and the high beam indicator
light fail to come on.
Replace the headlight
bulb, socket or both.
2. High beam indicator light
Replace the bulb.
3. Voltage
YES
NO
Headlight coupler (wire harness side)
Headlight
Positive tester probe --> yellow
1
1
1
1
1
or green
2
2
2
2
2
Negative tester proble --> black
3
3
3
3
3
• Set the main switch to "ON"
• Start the engine.
• Set the switch to or .
• Measure the voltage (DC 12 V) of yellow
1
or green
2
on headlight coupler (wire
harness) and yellow
4
on panel coupler
(wire harness).
• Is the voltage within specification?
The wiring from the
main switch to the
headlight coupler is
faulty and must be
repaired.
1. Headlight bulb and socket.
YES
NO
•
Check the high bem indicator light.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”
•
Is the high beam indicator light OK?
YES
NO
• Connect the pocket tester (DC 20 V) to the
panel and headlight couplers, as shown.
High beam indicator light
Positive tester probe --> yellow
4
4
4
4
4
Negative tester proble -->black
5
5
5
5
5
Panel couplers (wire harness)
5
5
5
5
5
4
4
4
4
4
2
2
2
2
2
1
1
1
1
1
3
3
3
3
3
7-29
The circuit is OK.
A
When the dimmer switch is set to
B
When the dimmer switch is set to
Summary of Contents for YBR250 2007
Page 1: ...YBR250 SERVICE MANUAL 5D1 F8197 E0 2007 ...
Page 2: ......
Page 359: ...YAMAHA MOTOR DA AMAZÔNIA LTDA ...
