Checking The Intake Air Pressure Sensor; Checking The Intake Air Temperature Sensor - Yamaha YFM7FGPW Service Manual

FUEL INJECTION SYSTEM
EAS28410
CHECKING THE INTAKE AIR PRESSURE
SENSOR
1. Check:
• intake air pressure sensor output voltage
Out of specification → Replace.
Intake air pressure sensor output
voltage
M MMM M MMM M
a. Connect the pocket tester (DC 20 V) to the
intake air pressure sensor coupler as
shown.
Pocket tester
Analog pocket tester
Positive tester probe → pink terminal 1
Negative tester probe →
b. Turn the main switch to "ON".
c. Measure the intake air pressure sensor out-
put voltage.
L LLL L LLL L
CHECKING THE INTAKE AIR
TEMPERATURE SENSOR
1. Remove:
• intake air temperature sensor
WARNING
_
• 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.
Intake air temperature sensor
resistance
6 - 26
FI
3.00 ~ 4.00 V
M MMM M M MMM M M MMM M
90890-03112
YU-03112-C
black/blue terminal 2
L LLL L L LLL L L LLL L
290 ~ 390 Ω at 80 °C (176 °F)
M MMM M MMM
L LLL L LLL