Yamaha YFM350R-W Supplementary Service Manual page 63

EAS00792
5. The license plate light fails to come on.
1. License plate light bulb and socket
• Check the license plate light bulb and
socket for continuity.
• Are the license plate light bulb and socket
OK?
YES
2. Voltage
• Connect the pocket tester (DC 20 V) to the
license plate light coupler (wire harness
side) as shown.
Positive tester probe → brown/blue 1
Negative tester probe → black 2
L
• Set the main switch to "ON".
• Measure the voltage (DC 12 V) of brown/
blue 1 on the license plate light coupler
(wire harness side).
• Is the voltage within specification?
YES
This circuit is OK.
NO
Replace the license
plate light bulb,
socket or both.
B B Br/L
2
1
NO
The wiring circuit
from the main switch
to the license plate
light coupler is faulty
and must
repaired.
LIGHTING SYSTEM
be
– 56 –
– +
ELEC