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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
JJ
JJ
J green/yellow
11
11
1
Negative tester probe
JJ
JJ
J black
22
22
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
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