Yamaha YZF-R6T Supplementary Service Manual page 510

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
2. Voltage
S Connect the pocket tester (DC 20 V) to the
horn connector at the horn terminal as
shown.
Positive tester probe ! black/white
Negative tester probe ! ground
S Turn the main switch to "ON".
S Push the horn switch.
S Measure the voltage (DC 12 V) of
black/white at the horn terminal.
S Is the voltage within specification?
YES
3. Horn
S Disconnect the black connector at the horn
terminal.
S Connect a jumper lead
nal and ground the jumper lead.
S Turn the main switch to "ON".
S Push the horn switch.
S Does the horn sound?
YES
The horn is OK.
email: info@motomatrix.co.uk
1
NO
The wiring circuit
from the main switch
to the horn connec-
tor is faulty and must
be repaired.
1
to the horn termi-
NO
Replace the horn.
8-36
SIGNALING SYSTEM
EAS00797
2. The tail/brake light fails to come on.
1. Tail/brake light (LEDs)
S Check the tail/brake light for continuity.
Refer to "CHECKING THE LEDs"
S Are the tail/brake light OK?
YES
2. Brake light switches
S Check the brake light switches for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the brake light switch OK?
YES
3. Voltage
S Connect the pocket tester (DC 20 V) to the
tail/brake light coupler (wire harness side)
as shown.
Positive tester probe ! yellow
Negative tester probe ! black
S Turn the main switch to "ON".
S Pull in the brake lever or push down on the
brake pedal.
S Measure the voltage (DC 12 V) of yellow
on the tail/brake light coupler (wire harness
side).
S Is the voltage within specification?
ELEC
NO
Replace the
tail/brake light as-
sembly.
NO
Replace the brake
light switch.
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