Yamaha XVZ13TF 1999 Service Manual page 436

7. The over drive indicator light fails to come on.
1. Over drive indicator light bulb and socket
S Check the over drive indicator light bulb and
socket for continuity.
S Are the over drive 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
3. Voltage
S Connect the pocket tester (20 V DC) to the
meter light bulb coupler (wire harness side)
as shown.
Tester positive probe ! brown
Tester negative probe ! white/green 2
NO
Replace the over
drive indicator light
bulb, socket or both.
NO
Replace the neutral
switch.
1
SIGNAL SYSTEM
S Set the main switch to "ON".
S Set the transmission 5th gear.
S Measure the voltage (12 V).
S Is the voltage within specification?
YES
This circuit is OK.
8-38
ELEC
NO
The wiring circuit
from the main switch
to the meter light cou-
pler (wire harness
side) and meter light
coupler to over drive
switch are faulty and
must be repaired.