Yamaha 2002 TDM900 Service Manual page 440

5. Voltage
S Connect the pocket tester (DC 20 V) to the
turn signal light coupler or meter assembly
coupler (wire harness side) as shown.
A Turn signal light
B Turn signal indicator light
Left turn signal light
Positive tester probe ! chocolate
Negative tester probe ! ground
Right turn signal light
Positive tester probe ! dark green
Negative tester probe ! ground
A
B
S Set the main switch to "ON".
S Set the turn signal switch to "
S Measure the voltage (DC 12 V) of the choco-
late or dark green
1
light coupler (wire harness side).
S Is the voltage within specification?
YES
This circuit is OK.
1
2
" or " ".
at the turn signal
2
NO
The wiring circuit
from the turn signal
switch to the turn sig-
nal light coupler (me-
ter assembly cou-
pler) is faulty and
must be repaired.
8-40
SIGNALING SYSTEM
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.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS"
S Are the neutral indicator light bulb and sock-
et OK?
YES
2. Neutral switch
S Check the neutral switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the neutral switch OK?
YES
ELEC
NO
Replace the neutral
indicator light bulb,
socket or both.
NO
Replace the neutral
switch.