Yamaha YZF-R1 2020 Service Manual page 483

c. Measure the air induction system solenoid
resistance.
EAS30589
CHECKING THE CYLINDER
IDENTIFICATION SENSOR
1. Remove:
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• Air filter case
Refer to "AIR FILTER CASE" on page 7-5.
• Air filter case duct
Air cut-off valve
Refer to "AIR INDUCTION SYSTEM" on
page 7-19.
2. Check:
• Cylinder identification sensor output voltage
Out of specification → Replace.
Cylinder identification sensor
output voltage (ON)
4.8 V
Cylinder identification sensor
output voltage (OFF)
0.8 V
a. Connect the test harness– speed sensor
(3P) "1" to the rear speed sensor coupler
and wire harness as shown.
b. Connect the digital circuit tester (DC V) to
the test harness– speed sensor (3P).
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with ta-
chometer
YU-A1927
Test harness– speed sensor (3P)
90890-03208
Test harness– speed sensor (3P)
YU-03208
ELECTRICAL COMPONENTS
• Positive tester probe
white/black (wire harness color)
• Negative tester probe
black/blue (wire harness color)
O G
c. Turn the main switch to "ON".
d. Rotate the crankshaft.
e. Measure the voltage. With each full rota-
EAS30594
CHECKING THE INTAKE AIR
TEMPERATURE SENSOR
1. Remove:
• Intake air temperature sensor
EWA14110
• Handle the intake air temperature sensor
with special care.
• Never subject the intake air temperature
sensor to strong shocks. If the intake air
temperature sensor is dropped, replace it.
2. Check:
• Intake air temperature sensor resistance
Out of specification → Replace.
a. Connect the digital circuit tester (Ω) to the
8-50
tion of the crankshaft, the voltage reading
should cycle from 0.8 V to 4.8 V to 0.8 V to
4.8 V.
WARNING
Intake air temperature sensor re-
sistance
5400–6600 Ω at 0 °C (5400–6600
Ω at 32 °F)
Intake air temperature sensor re-
sistance
289–391 Ω at 80 °C (289–391 Ω
at 176 °F)
intake air temperature sensor terminal as
shown.
1