Checking The Speed Sensor; Checking The Radiator Fan Motors; Checking The Coolant Temperature Sensor - Yamaha YZF-R6(V) 2006 Service Manual

EAS28240

CHECKING THE SPEED SENSOR

1. Check:
• Speed sensor output voltage
Out of specification → Replace.
Output voltage reading cycle
0.6 V to 4.8 V to 0.6 V to 4.8 V
M MMM M MMM M M MMM M
a. Connect the pocket tester (DC 20 V) to the
speed sensor coupler (wire harness side) as
shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
white/yellow "1"
• Negative tester probe →
black/blue "2"
b. Turn the main switch to "ON".
c. Elevate the rear wheel and slowly rotate it.
d. Measure the voltage of white/yellow and
black/blue. With each full rotation of the rear
wheel, the voltage reading should cycle from
0.6 V to 4.8 V to 0.6 V to 4.8 V.
L LLL L LLL L L LLL L
EAS28250

CHECKING THE RADIATOR FAN MOTORS

1. Check:
• Radiator fan motor
Faulty/rough movement → Replace.
M MMM M MMM M M MMM M
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"
M MMM M M MMM M M MMM M
1
P L /Y
/R
B/ L
B/W
2
L LLL L L LLL L L LLL L
M MMM M M MMM M M MMM M
ELECTRICAL COMPONENTS
MMM
c. Measure the radiator fan motor movement.
L LLL L LLL L
EAS28260
CHECKING THE COOLANT TEMPERATURE
SENSOR
1. Remove:
• Coolant temperature sensor
Refer to "THERMOSTAT" on page 6-7.
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 → Replace.
M MMM M MMM M
a. Connect the pocket tester (Ω × 100) to the
coolant temperature sensor as shown.
LLL
MMM
8-106
L LLL L L LLL L L LLL L
Resistance at 80 °C
290–354 Ω
M MMM M M MMM M M MMM M
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
L LLL L LLL
M MMM M MMM