Yamaha FZ1-N Service Manual page 433

d. Slowly heat the coolant, and then let it cool
to the specified temperature indicated in
the table.
e. Check the coolant temperature sensor for
continuity at the temperatures indicated in
the table.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
EAS28300
CHECKING THE THROTTLE POSITION
SENSOR
1. Remove:
• Throttle position sensor
(from the throttle body)
2. Check:
• Throttle position sensor
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Connect the pocket tester (Ω × 1k) to the
throttle position sensor as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
ELECTRICAL COMPONENTS
• Tester positive lead →
Blue "1"
• Tester negative lead →
Black/Blue "2"
b. Check the throttle position sensor maxi-
mum resistance.
Out of specification → Replace the throttle
position sensor.
Maximum throttle position sen-
sor resistance
4–6 kΩ at 20°C (68°F)
c. Connect the pocket tester (Ω × 1k) to the
throttle position sensor as shown.
• Tester positive lead →
Yellow "3"
• Tester negative lead →
Black/Blue "2"
d. While slowly opening the throttle, check
that the throttle position sensor resistance
is within the specified range.
The resistance does not change or it
changes abruptly → Replace the throttle
position sensor.
Throttle position sensor resis-
tance
0–6 kΩ at 20°C (68°F)
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
3. Install:
• Throttle position sensor
8-109