Service manual

ELEC
8-34
SIGNALING SYSTEM
EAS00797
2. The tail/brake light fails to come on.
1. Tail/brake light bulb and socket
9
Check the tail/brake light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
9
Are the tail/brake light bulb and socket OK?
3. Voltage
9
Connect the pocket tester (DC 20 V) to the
tail/brake light coupler (wire harness side) as
shown.
Positive tester probe
→→
green/yellow
11
Negative tester probe
→→
black
22
9
Set the main switch to “ON”.
9
Pull in the brake lever or push down on the
brake pedal.
9
Measure the voltage (DC 12 V) of green/yel-
low lead terminal
1
on the tail/brake light
coupler (wire harness side).
9
Is the voltage within specification?
2. Brake light switches
9
Check the brake light switches for continuity.
Refer to “CHECKING THE SWITCHES”.
9
Is the brake light switch OK?
YES NO
Replace the tail/
brake light bulb,
socket or both.
YES NO
Replace the brake
light switch.
YES NO
The wiring circuit
from the main
switch to the
tail/brake light cou-
pler is faulty and
must be repaired.
This circuit is OK.
B
Ch
L
Dg
Y
L
Dg
B
G/Y
Ch
1
2
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