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Replace the tail/
brake light bulb, sock-
et or both.
NO
1. Tail/brake light bulb and socket
SCheck the tail/brake light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
SAre the tail/brake light bulb and socket OK?
YES
3. Voltage
SConnect the pocket tester (DC 20 V) to the
tail/brake light coupler (wire harness side) as
shown.
Tester positive probe ! yellow
Tester negative probe ! black
1
Replace the brake
light switch.
NO
2. Brake light switches
SCheck the brake light switches for continuity.
Refer to “CHECKING THE SWITCHES”.
SIs the brake light switch OK?
YES
2
YES
The wiring circuit
from the main switch
to the tail/brake light
coupler is faulty and
must be repaired.
NO
This circuit is OK.
SSet the main switch to “ON”.
SPull in the brake lever or push down on the
brake pedal.
SMeasure the voltage (12 V) of yellow at the
tail/brake light coupler (wire harness side).
SIs the voltage within specification?
Replace the turn sig-
nal light bulb, socket
or both.
NO
EAS00799
3. A turn signal light, turn signal indicator light
or both fail to blink.
1. Turn signal light bulb and socket
SCheck the turn signal light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
SAre the turn signal light bulb and socket OK?
YES
SIGNALING SYSTEM
ELEC
EAS00797
2. A tail/brake light fails to come on.