Checking The Fuel Sender; Checking The Speed Sensor - Yamaha 2007 XP500 Service Manual

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2. Check:
Operation of the horn
G
The horn fails to sound → check the step (3).
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a. Disconnect the horn coupler at the horn.
b. Connect a jumper lead "1" to the brown termi-
nal in the horn coupler and the horn terminal.
c. Turn the main switch to "ON".
d. Check that the horn does sound.
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EAS28230

CHECKING THE FUEL SENDER

1. Remove:
Fuel pump
G
(from the fuel tank)
2. Disconnect:
Fuel sender coupler
G
(from the wire harness)
3. Check:
Fuel sender resistance
G
Out of specification → Replace.
Fuel sender resistance (up posi-
tion F "A")
19–21Ω at 20°C (68°F)
Fuel sender resistance (down po-
sition E "B")
137–143Ω at 20°C (68°F)
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a. Connect the pocket tester (Ω× 1) to the fuel
sender terminal as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
1
1
8-117
ELECTRICAL COMPONENTS
Positive tester probe
Green "1"
Negative tester probe
Black "2"
2
B B
G R/L
1
A
B
b. Measure the fuel sender resistance.
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EAS28240

CHECKING THE SPEED SENSOR

1. Check:
Speed sensor output voltage
G
Out of specification → Replace.
Output voltage reading cycle
0 V–5 V–0 V–5 V–0 V
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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