Lighting System Check - Yamaha MBK YQ100 Service Manual

LIGHTING SYSTEM CHECK

1.Headlight and high beam indicator light do not
work.
1.Bulb and socket.
Refer to "SWITCH INSPECTION".
2.Voltage
• Connect the pocket tester (AC20V) to the
headlight and the high beam indicator light
couplers.
Headlight:
• "LO":
Pocket tester (+) lead → → → → → Green/Black
Pocket tester (-) lead → → → → → Black
• "HI":
Pocket tester (+) lead → → → → → Yellow
Pocket tester (-) lead → → → → → Black
• High beam indicator light:
Pocket tester (+) lead → → → → → Yellow
Pocket tester (-) lead → → → → → Black
• Set the main switch to "ON".
• Start the engine.
• Set the light switch to "
• Switch from " " to "
• Check for voltage (12 V) to the bulb socket
connector.
Circuit is in good condition.
3.The front position light does not work.
1.Bulb and socket.
Refer to " SWITCH INSPECTION " section.
CONTINUITY
".
" and back.
MEETS
SPECIFICATION
CONTINUITY
7-24
LIGHTING SYSTEM
NO CONTINUITY
Replace the bulb or socket.
12V
35W / 35W
B
G
LR
Y
Dg
Ch
Gy
Br
YR
B
OUT OF SPECIFICATION
There is a defect in the wire harness between
the main switch and the bulb socket connector
→ Repair.
NO CONTINUITY
Replace bulb or socket.
ELEC
B
Br
L
G
12V 1.2W
J
I H
12V 1.2W
Dg
Ch
B
Y
B
12V 1.2W
K
Br YR
M