Troubleshooting - Yamaha LB50IIAC Service Manual

EB805010
TROUBLESHOOTING
IF THE HEADLIGHT, HIGH BEAM INDICATOR LIGHT, TAILLIGHT AND/OR METER LIGHT
FAIL TO COME ON:
Procedure
Check:
1.Bulb and bulb socket
2.Lighting coil
3.Light switch
NOTE:~~~~~~~~~~~~
Use the following special tool(s) for trouble-
shooting.
~I
Pocket tester:
90890-03112
1.Bulb and bulb socket
• Check the bulb and bulb socket for conti-
nuity.
,D.-
CONTINUITY
2.Lighting coil resistance
• Disconnect the CDI magneto coupler
from the wire harness.
• Connect the Pocket Tester
(Q
x 1) to the
lighting coil coupler.
Tester(+) Lead
-ry
Yellow/Red
CD
Terminal
Tester(-) Lead
-ry
Black @Terminal
• Measure the lighting coil resistance.
Lighting coil resistance:
0.2 - 0.3
n
at 20 °C
n
MEET
""'7
SPECIFICATION
*
- 144 -
4.Dimmer switch
5.Wiring connection
(the entire lighting system)
NO CONTINUITY
I
Replace the bulb and/or bulb socket.
2
OUT OF SPECIFICATION
+
I
Replace the lighting coil.