DAELIM NS125DLX Service Manual page 188

Troubleshooting
Fuel Gauge
Gauge Reading Inaccurate (Ignition switch ON)
1. Operate the turn signal to check
the battery circuit.
Signal operates satisfactorily
2. Remove the fuel level sensor, and
move float to check the status of
operation
Float up : Full position
Float down : Empty position
Needle not moving
3. Short-circuit the tank unit
terminal on the wire harness side.
Needle not moving
4. Terminal joints loose or faulty
connection
Check
Gauge needle shakes or vertically wobbles. (Ignition switch ON)
1. Operate the turn signal to check
the battery circuit
Signal operates satisfactorily
2. Remove the tank and operate the float Needle not moving
Needle moving
3. Move the float rapidly.
One Up/down motion per second.
Needle moving
4. Start the engine, and measure
the fuel level sensor resistance.
Resistance not changed
5. Check each joint
Satisfactory
20-6
Signal continuously
operates dim or does not
operate at all
Needle moves.
Needle not moving
Unsatisfactory
Signal continuously
operates dim or does
not operate at all
Needle not moving
Resistance changed
significantly
Unsatisfactory
Cause of Trouble
(1) Fuse cut
(2) Battery weak or totally discharged
(3) Faulty ignition switch
(4) Faulty terminal connection
(5) Wire harness damaged
(1) Faulty float
(1) Balance coil damaged or shorted
(1) Terminal loose
(2) Faulty terminal connection
(1) Balance coil/lead shorted or damaged
Cause of Trouble
(1) Fuse cut
(2) Battery weak or totally discharged
(3) Ignition switch damaged or shorted
(4) Terminal loose of faulty connection
(5) Wire harness damaged
(1) Faulty fuel level sensor connection
(1) Damper oil inside the meter insufficient.
(1) Faulty connection between the
sliding arm and the resistance
(1) Terminal connection loose or
faulty connection
(1) Balance coil/lead shorted or damaged