Yamaha 2009 YW125Y, Руководство по обслуживанию

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7-38
- +
ELEC
2. Brake light switches
8
Check the brake light switches for continu-
ity.
Refer to “CHECKING THE SWITCHES”.
8
Is the brake light switch OK?
YES NO
Replace the brake
light switch.
SIGNALING SYSTEM
EAS00798
2. The tail/brake light fails to come on.
1. Tail/brake light bulb and socket
8
Check the tail/brake light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”
8
Are the tail/brake light bulb and socket OK?
YES NO
Replace the tail/brake
light bulb, socket or
both.
3. Voltage
8
Connect the pocket tester (DC 20 V) to the
tail/brake light coupler (wire harness side)
as shown.
Positive tester probe
J J J J J
green/yellow
1 1 1 1 1
Negative tester probe
J J J J J
black
2 2
2 2
2
8
Set the main switch to “ON”.
8
Pull in the brake levers.
8
Measure the voltage (DC 12 V) of green/yel-
low
1
on the tail/brake light coupler (wire
harness side).
8
Is the voltage within specification?
YES NO
The wiring circuit from
the main switch to the
tail/brake light coupler
is faulty and must be
repaired.
Refer to “CIRCUIT
DIAGRAM”. This circuit is OK.
2
1
L
Dg
G/Y
B
Ch
DC20V
G/Y
B
Ch
L
Dg