Yamaha FJR1300R Service Manual page 541

EAS00804
6. The fuel level gauge fails to operate.
1. Fuel sender
• Drain the fuel from the fuel tank and remove
the fuel pump from the fuel tank.
• Connect the pocket tester (Ω × 10) to the
fuel sender terminals as shown.
Tester positive probe → green/white 1
Tester negative probe → black 2
B
R/L
• Measure the fuel sender resistances.
NOTE:
Measure the resistances when the float arm
is in contact with the full position and empty
position of the stopper.
Fuel sender resistance
Full position of the float
19 ~ 21 Ω at 20 °C (68 °F)
Empty position of the float
139 ~ 141 Ω at 20 °C (68 °F)
• Is the fuel sender OK?
YES
SIGNALING SYSTEM
G/W
B
NO
Replace the fuel
pump.
8 - 45
2. Voltage
• Connect the pocket tester (DC 20 V) to the
meter assembly coupler as shown.
Tester positive probe → green/white 1
Tester negative probe → black/white 2
R/G B/W Br/R
R/W G/W Y/L Lg
• Set the main switch to "ON".
• Measure the voltage (12 V) of green/white
1 and black/white 2 at the meter assem-
bly coupler.
• Is the voltage within specification?
YES
The wiring circuit
from the main switch
to the meter assem-
bly coupler is faulty
and must be
repaired.
– +
ELEC
W
Y Ch Dg L
NO
Replace the meter
assembly.