Yamaha MIO Service Manual page 294

5. Voltage
• Connect the pocket tester (DC 20 V) to the
turn signal light coupler (wire harness
side) as shown.
È Rear turn signal light
É Front turn signal light
Left turn signal light
Positive tester probe → chocolate 1
Negative tester probe → ground
Right turn signal light
Positive tester probe → dark green 2
Negative tester probe → ground
Ê Turn signal indicator light
Positive tester probe → chocolate 3
Negative tester probe → ground
Positive tester probe → dark green 4
Negative tester probe → ground
È
É
Ê
SIGNALING SYSTEM
B L L B
Y G/Y
Ch Dg Dg Ch
2 1
1
Ch Ch
B B
Dg Dg
B B
2
3
4
Br Br
Ch Dg Dg Ch
G B B G
7 - 40
• Set the main switch to "ON".
• Set the turn signal switch to "
• Measure the voltage (DC 12 V) of the
chocolate 1 or dark green 2 at the turn
signal light coupler (wire harness side) and
chocolate 3 or dark green 4 at the turn
signal indicator light coupler (wire harness
side).
• Is the voltage within specification?
YES
This circuit is OK.
– +
ELEC
" or " ".
NO
The wiring circuit
from the turn signal
switch to the turn sig-
nal light coupler is
faulty and must be
repaired.