Yamaha FZS1000N Service Manual page 365

EAS00804
5. The fuel level gauge fails to operate.
1. Fuel sender
S Remove the fuel sender from the fuel tank.
S Connect the pocket tester to the fuel sender
coupler (wire harness side) as shown.
Positive tester probe ! green
Negative tester probe ! black
S Measure the fuel sender resistances.
Fuel sender resistance (up position
) (Ω 1)
3
4 X 10 Ω at 20_C (68_F)
Fuel sender resistance (down posi-
tion ) (Ω 10)
4
90 X 100 Ω at 20_C (68_F)
S Is the fuel sender OK?
YES
2. Voltage
S Connect the pocket tester (DC 20 V) to the
meter light coupler (wire harness side) as
shown.
Positive tester probe ! brown
Negative tester probe ! black
1
2
NO
Replace the fuel
sender.
1
2
8-42
SIGNAL SYSTEM
S Set the main switch to "ON".
S Measure the voltage (12 V) of brown
the meter light coupler (wire harness side).
S Is the voltage within specification?
YES
3. Fuel level gauge
S Set the main switch to "ON".
S Move the float up
1
or down
S Check that the fuel level gauge needle
moves to "F" or "E".
NOTE:
Before reading the fuel level gauge, leave
the float in one position (either up or down)
for at least three minutes.
S Does the fuel level gauge needle move ap-
propriately?
YES
4. Wiring
S Check the entire signaling system's wiring.
Refer to "CIRCUIT DIAGRAM".
ELEC
on
1
NO
Check the wiring
connections of the
entire signaling sys-
tem.
2
.
NO
Replace the fuel lev-
el gauge.