Yamaha XT660X Service Manual

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ELEC
SIGNALING SYSTEM
EAS00796
CHECKING THE SIGNALING SYSTEM
1. The horn fails to sound.
YES
NO
YES
NO
YES
NO
1. Horn switch
• Check the horn switch for continuity.
Refer to “CHECKING THE SWITCHES”.
• Is the horn switch OK?
Replace the left han-
dlebar switch.
2. Voltage
• Connect the pocket tester (DC 20 V) to the
horn connector at the horn terminal as
shown.
Positive tester probe
→
pink
1
Negative tester probe
→
ground
• Set the main switch to “ON”.
• Push the horn switch.
• Measure the voltage (DC 12 V) of pink at
the horn terminal.
• Is the voltage within specification?
The wiring circuit
from the main switch
to the horn connector
is faulty and must be
repaired.
P B
1
3. Horn
• Disconnect the black connector at the horn
terminal.
• Connect a jumper lead
1
to the horn ter-
minal and ground the jumper lead.
• Set the main switch to “ON”.
• Push the horn switch.
• Does the horn sound?
The horn is OK. Replace the horn.
P
1

Yamaha XT660X Specifications

General

Displacement	660cc
Bore x Stroke	100.0 mm x 84.0 mm
Compression Ratio	10.0:1
Fuel System	Fuel Injection
Ignition System	TCI
Transmission	5-speed
Final Drive	Chain
Rear Brake	Single disc, Ø 245 mm
Front Tyre	120/70 R17
Rear Tyre	160/60 R17
Maximum Power	48 HP (35.3 kW) @ 6, 000 rpm
Maximum Torque	58.4Nm (43.1lb-ft) @ 5, 250rpm
Front Suspension	Telescopic fork
Rear Suspension	Swingarm, (link suspension)
Fuel Tank Capacity	15 litres
Engine Type	Liquid-cooled, 4-stroke, single cylinder, SOHC, 4-valves