Yamaha XT660 2004, Service Manual

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– +
ELEC
SIGNALING SYSTEM
YES NO
EAS00803
5. The fuel level warning light fails to come on.
YES
NO
YES
NO
4. Voltage
• Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness
end) as shown.
Positive tester probe
→
light green
1
Negative tester probe
→
ground
• Set the main switch to “ON”.
• Shift the transmission to neutral.
• Measure the voltage (DC 12 V) of light
green
1
and ground at the meter assem-
bly coupler.
• Is the voltage within specification?
This circuit is OK. The wiring circuit
from the main switch
to the meter assem-
bly couplers is faulty
and must be
repaired.
Dg G / L R / W
Ch R / G Y
B / W Lg
G / W Y / L
Ch R / G Y
G G / L R / W
G / W Y / L
B / W Lg
1
1. Fuel level warning light LED
• Check the LED of the fuel level warning
light.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
• Is the fuel level warning light LED OK?
Replace the meter
assembly.
2. Fuel sender (thermistor)
• Disconnect the fuel sender coupler from
the fuel pump.
• Connect the pocket tester (k
Ω ×
1) to the
fuel sender as shown.
Positive tester probe
→
green/white
1
Negative tester probe
→
black
2
• Check the fuel sender for continuity.
• Is the fuel sender OK?
Replace the fuel
pump assembly.