Yamaha TW125 1999 Service Manual page 272

S Set the main switch to "ON".
S Set the turn switch to "
S Measure the voltage (12 V) of chocolate
1
(orange) or dark green
light connector (wire harness side).
S Is the voltage within specification?
YES
This circuit is OK.
EAS00800
4. The neutral indicator light fails to come on.
1. Neutral indicator light bulb and socket
S Check the neutral indicator light bulb and
socket for continuity.
S Are the neutral indicator light bulb and socket
OK?
YES
2. Neutral switch
S Check the neutral switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the neutral switch OK?
YES
" or " ".
2
at the turn signal
NO
The wiring circuit
from the turn signal
switch to the turn sig-
nal light connector is
faulty and must be re-
paired.
NO
Replace the neutral
indicator bulb, socket
or both.
NO
Replace the neutral
switch.
SIGNAL SYSTEM
3. Voltage
S Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness side)
as shown.
Tester positive probe ! brown
Tester negative probe ! sky blue
S Set the main switch to "ON".
S Measure the voltage (12 V) of brown
sky blue at the meter assembly coupler.
2
S Is the voltage within specification?
YES
This circuit is OK.
5. The carburetor heater fails to come on.
1. Thermo switch
S Disconnect the thermo switch from the wire-
harness..
S Connect the pocket tester (Ω
mo switch lead.
Tester positive proble ! black
Tester negative proble ! black
7-33
ELEC
1
2
and
1
NO
The wiring circuit
from the main switch
to the meter light bulb
coupler is faulty and
must be repaired.
1) to the ther-
1
2