A SERVICE OF

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8 - 41
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ELEC
SIGNALING SYSTEM
EAS00797
2. The tail/brake light fails to come on.
YES
NO
YES
NO
YES
NO
1. Tail/brake light bulb and socket
Check the tail/brake light bulb and socket
for continuity.
Are the tail/brake light bulb and socket OK?
Replace the tail/
brake light bulb,
socket or both.
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.
3. Voltage
Connect the pocket tester (DC 20 V) to the
tail light assembly coupler (wire harness
side) as shown.
Tester positive probe
yellow
1
Tester negative probe
black
2
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
1
on
the tail light assembly coupler (wire harness
side).
Is the voltage within specification?
This circuit is OK. The wiring circuit
from the main switch
to the tail light
assembly coupler is
faulty and must be
repaired.
Ch
Y
L
B
Dg
Dg
Y
BL/R
Ch