Yamaha XV19SW Service Manual page 369

4. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 7-21.
OK ↓
This circuit is OK.
The neutral indicator light fails to come on.
1. Check the neutral switch.
Refer to "CHECKING THE
SWITCHES" on page 7-71.
OK ↓
2. Check the relay unit (diode).
Refer to "CHECKING THE DI-
ODES" on page 7-81.
OK ↓
3. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 7-21.
OK ↓
This circuit is OK.
The fuel level gauge fails to operate.
1. Check the fuel sender (fuel tank).
Refer to "CHECKING THE FUEL
SENDER (FUEL TANK)" on page
7-87.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 7-21.
OK ↓
Replace the meter assembly.
The fuel level warning light fails to come on.
1. Check the fuel level warning light.
Refer to "CHECKING THE FUEL
LEVEL WARNING LIGHT" on page
7-88.
OK ↓
SIGNALING SYSTEM
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the neutral switch.
NG →
Replace the relay unit.
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the fuel sender.
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the meter assembly or fuel pump
assembly.
7-25