Yamaha MTN1000 2016 Service Manual page 443

The fuel meter, fuel level warning light, or both fail to come on.
1. Check the fuel sender.
Refer to "CHECKING THE FUEL
SENDER" on page 8-203.
OK
2. Check the entire signaling system's
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-21.
OK
Replace the ECU or meter assembly.
Refer to "REPLACING THE ECU
(Engine Control Unit)" on page 8-194.
The coolant temperature warning light fails to come on.
1. Check the coolant temperature sen-
sor.
Refer to "CHECKING THE COOL-
ANT TEMPERATURE SENSOR"
on page 8-204.
OK
2. Check the entire signaling system's
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-21.
OK
Replace the ECU or meter assembly.
Refer to "REPLACING THE ECU
(Engine Control Unit)" on page 8-194.
QSS (Quick Shift System)* does not operate.
1. Check that the engine trouble light
does not come on.
OK
2. Check that the QSS is working un-
der normal QSS operating condi-
tions.
OK
3. Make sure that the QSS is effective.
(Check whether the "QS" icon is dis-
played at the top of the meter.)
OK
4. Check that the shift switch coupler
is connected.
OK
Replace the fuel pump assembly.
NG
Properly connect or repair the signaling
system's wiring.
NG
Replace the coolant temperature sensor.
NG
Properly connect or replace the wiring har-
ness.
NG
Repair the faulty parts.
NG
Check the QSS operating conditions ex-
plained in the owner's manual and operate
NG
the QSS accordingly.
Activate the QSS. (Set the QSS to a set-
ting other than "OFF".)
NG
Connect the shift switch coupler.
NG
8-26
SIGNALING SYSTEM