Checking The Fuel Level Warning Light; Checking The Radiator Fan Motors; Checking The Coolant Temperature Sensor - Yamaha R1 Series 2015 Service Manual

EAS30574
CHECKING THE FUEL LEVEL WARNING
LIGHT
This model is equipped with a self-diagnosis de-
vice for the fuel level detection circuit.
1. Check:
• Fuel level warning light "1"
(Turn the main switch to "ON".)
Warning light comes on for a few seconds,
then goes off Warning light is OK.
Warning light does not come on
the meter assembly.
Warning light flashes eight times, then goes
off for 3 seconds in a repeated cycle (mal-
function detected in fuel sender)
the fuel pump assembly.
LIF
LC LCS QS
1000 r/min
×
0
ODO
--.-
FUEL CON
A
MODE -
PWR
EAS30577

CHECKING THE RADIATOR FAN MOTORS

1. Check:
• Radiator fan motor
Faulty/rough movement
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Disconnect the radiator fan motor coupler
from the wire harness.
b. Connect the battery (DC 12 V) as shown.
• Positive tester probe
blue "1"
• Negative tester probe
black "2"
c. Measure the radiator fan motor movement.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
Replace
Replace
GPS 12 : 00
A-1
N km/h
1
2
km
L
4 2 2
TCS SCS
Replace.
ELECTRICAL COMPONENTS
EAS30578
CHECKING THE COOLANT TEMPERATURE
SENSOR
1. Remove:
• Coolant temperature sensor
Refer to "CYLINDER HEAD" on page 5-23.
EWA14130
WARNING
• Handle the coolant temperature sensor
with special care.
• Never subject the coolant temperature sen-
sor to strong shocks. If the coolant temper-
ature sensor is dropped, replace it.
2. Check:
• Coolant temperature sensor resistance
Out of specification
1
Coolant temperature sensor re-
sistance
Coolant temperature sensor re-
sistance
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Connect the pocket tester (
to the coolant temperature sensor as shown.
Pocket tester
Analog pocket tester
b. Immerse the coolant temperature sensor "1"
in a container filled with coolant "2".
TIP
Make sure the coolant temperature sensor ter-
minals do not get wet.
c. Place a thermometer "3" in the coolant.
8-190
Replace.
2517–2777 @20 C (68 F)
210–221 @100 C (212 F)
90890-03112
YU-03112-C
1 k/ 100)