5-39
Ignition unit and component
a. Connect the YDIS to display “Intake air
temperature”.
b. Check that the difference between the am-
bient temperature and the displayed intake
air temperature is within ± 5 C (± 9 F).
• Check the intake air temperature sensor
when the engine is cold.
• When checking the intake air temperature
sensor, remove the top cowling and do not
start the engine.
Checking the intake air pressure sen-
sor
The intake air pressure sensor is a component
of the intake air pressure/temperature sensor.
1. Measure:
• Intake air pressure sensor input voltage
Out of specification Check the wire har-
ness for continuity.
a. Remove the plate “1”.
b. Disconnect the intake air pressure sensor
coupler “a”.
c. Turn the “POWER” switch to ON, and then
measure the input voltage at the intake air
pressure sensor coupler.
d. Turn the “POWER” switch to OFF.
e. Connect the intake air pressure/tempera-
ture sensor coupler.
f. Install the plate “1”.
Checking the engine temperature sen-
sor
1. Measure:
• Engine temperature sensor input voltage
Out of specification Check the wire har-
ness for continuity.
Input voltage
5 V
Orange (Or)–Black (B)
1
Input voltage
5 V
Black/Yellow (B/Y)–Black (B)
a
BOr
1
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