Yamaha YZF-R6, Service Manual

Page: 395 / 425

8-39
Replace the tail /
brake light bulb, sock-
et or both.
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?
YES
3. Voltage
Connect the pocket tester (DC 20 V) to the
tail / brake light coupler (wire harness side) as
shown.
Tester positive probe yellow
Tester negative probe black
1
Replace the brake
light switch.
NO
2. Brake light switches
Check the brake light switches for continuity.
Refer to “CHECKING THE SWITCHES”.
Is the brake light switch OK?
YES
2
YES
The wiring circuit
from the main switch
to the tail / brake light
coupler is faulty and
must be repaired.
NO
This circuit is OK.
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?
Replace the turn sig-
nal light bulb, socket
or both.
NO
EB806413
3. A turn signal light, turn signal indicator light
or both fail to blink.
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
Replace the meter
assembly.
NO
2. Turn signal indicator light LED
Check the LED of the turn signal indicator
light.
Refer to “CHECKING THE LEDs”.
Is the turn signal indicator light LED OK?
YES
SIGNALING SYSTEM
ELEC
EB806411
2. A tail / brake light fails to come on.