8 - 35
–
+
ELEC
EBS01075
CHECKING THE SIGNALING SYSTEM
EBS01076
1. The brake light fails to come on.
YES
NO
YES
NO
YES
NO
1. Tail/brake light
• Disconnect the tail/brake light coupler from
the wire harness.
• Connect the battery (12V) to the tail/brake
light coupler as shown.
• When the jumper leads are connected to
the terminals the tail/brake light should illu-
minate.
Positive battery terminal
→
yellow
1
Negative battery terminal
→
black
2
• Is the tail/brake light OK?
Replace the tail/
brake light.
2. Brake light switches
• Check the brake light switches for continu-
ity.
Refer to “CHECKING THE SWITCHES”.
• Is the brake light switch OK?
Replace the brake
light switch.
L
Y
B
1
2
3. Voltage
• Connect the pocket tester (DC 20 V) to the
tail/brake light coupler (wire harness side)
as shown.
Positive tester probe
→
yellow
1
Negative tester probe
→
black
2
• Set the main switch to “ON”.
• Pull in the brake lever or push down on the
brake pedal.
• Measure the voltage (DC 12 V) of yellow
1
on the tail/brake light coupler (wire har-
ness side).
• Is the voltage within specification?
This circuit is OK.
The
wiring
circuit
from the main switch
to the tail/brake light
coupler is faulty and
must be repaired.
Y
L
B
L
Y
B
1
2
Содержание YFM700RV 2006
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