Yamaha XV1600A1999, Service Manual

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E
YES NO
YES NO
1. Tail / brake light bulb and socket
Check the tail / brake light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
Are the tail / brake light bulb and socket OK?
Replace the tail /
brake light bulb,
socket or both.
The wiring circuit
from the main switch
to the tail / brake light
coupler is faulty and
must be repaired.
Set the main switch to “ON”.
Pull in the brake lever or push down on the
brake pedal.
Measure the voltage (12 V) of yellow at the
tail / brake light coupler (wire harness side).
Is the voltage within specification?
1. Turn signal light bulb and socket
Check the turn signal light bulb and socket
for continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
Are the turn signal light bulb and socket OK?
YES NO
2. Brake light switches
Check the brake light switches for continuity.
Refer to “CHECKING THE SWITCHES”.
Is the brake light switch OK?
Replace the brake
light switch.
Tester positive probe yellow
Tester negative probe black
YES NO
Replace the turn sig-
nal light bulb, socket
or both.
1
3. Voltage
Connect the pocket tester (DC 20 V) to the
tail / brake light coupler (wire harness side)
as shown.
2
This circuit OK.
EB806413
3. A turn signal light, turn signal indicator light or
both fail to blink.
2. Turn signal indicator light bulb and socket
Check the turn signal indicator light bulb and
socket for continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
Is the turn signal indicator light bulb and
socket OK?
YES NO
Replace the turn sig-
nal indicator light
bulb, socket or both.
SIGNALING SYSTEM
ELEC
EB806411
2. A tail / brake light fails to come on.