Checking The Fuel Sender; Checking The Rear Speed Sensor - Yamaha YZF-R1(B) 2012 Service Manual

Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Minimum level position "A"
• Positive tester probe
Connector (White) "1"
• Negative tester probe
Body earth "2"
Maximum level position "B"
• Positive tester probe
Connector (White) "1"
• Negative tester probe
Body earth "2"
b. Measure the oil level switch resistance.
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EAS1KB8801

CHECKING THE FUEL SENDER

1. Disconnect:
• Fuel pump coupler
• Fuel sender coupler
(from the wire harness)
2. Remove:
• Fuel tank
3. Remove:
• Fuel pump
(from the fuel tank)
4. Connect:
• Fuel sender coupler
5. Turn the main switch to "ON".
6. Check:
• Fuel level warning light
Out of specification → Replace the fuel
pump.
ELECTRICAL COMPONENTS
Fuel pump is atmosphere "A"
→ Fuel level warning light is come on
Fuel pump is soaked in fuel "B"
→ Fuel level warning light is goes off
EAS28240

CHECKING THE REAR SPEED SENSOR

1. Check:
• Rear 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
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a. Connect the test harness-speed sensor
(3P) "1" to the rear speed sensor coupler
and wire harness as shown.
b. Connect the pocket tester (DC 20 V) to the
test harness-speed sensor (3P).
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Test harness-speed sensor (3P)
90890-03208
YU-03208
• Positive tester probe
White/Yellow (wire harness color)
• Negative tester probe
Black/Blue (wire harness color)
8-141