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ELEC
SIGNALING SYSTEM
EBS01075
CHECKING THE SIGNALING SYSTEM
EBS01076
1. The brake light fails to come on.
YES
NO
YES
NO
YES
NO
1. Brake light bulb and bulb socket
• Check the brake light bulb and bulb socket
for continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
• Are the brake light bulb and bulb socket
OK?
Replace the brake
light bulb, bulb
socket or both.
2. Brake light switch
• Check the brake light switch for continuity.
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/brake light connectors (wire harness
side) as shown.
Positive tester probe
→
yellow
1
Negative tester probe
→
black
2
• Set the main switch to “ON”.
• Push down on the brake pedal.
• Measure the voltage (12 V) of yellow
1
on
the tail/brake light connectors (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
connector is faulty
and must be
repaired.
