ELEC
SIGNALING SYSTEM
YES
NO
6. The speedometer fails to operate.
7-39
2. Speed sensor
• Set the main switch to "ON".
• Lift the rear wheel and spin it slowly.
• Measure the voltage (DC 5 V) at each full
turn of the rear wheel, the voltage reading
should oscillate around the levels 0.6 V to
4.8 V to 0.6 V to 4.8 V.
• Is the voltage reading routes correctly
through the cycles?
YES
NO
The circuit is OK.
Replace the speed
sensor.
• Connect the pocket tester (DC 20 V) to
the speed sensor, as shown.
Positive tester probe --> blue/yellow
1
Negative tester probe --> blue/black
2
LB
LYLB
LY
2
1
Replace the panel.
1. Voltage
• Connect the pocket tester (DC 20 V) to the
panel coupler (wire harness), as shown.
Positive tester probe --> blue/yellow
1
Negative tester probe --> blue/black
2
• Set the main switch to "ON".
• Lift the rear wheel and spin it slowly.
• Measure the voltage (DC 5 V) of blue/
yellow
1
on the panel coupler (wire
harness).
• Is the voltage within the specified?
2
1
Summary of Contents for YBR250 2007
Page 1: ...YBR250 SERVICE MANUAL 5D1 F8197 E0 2007 ...
Page 2: ......
Page 359: ...YAMAHA MOTOR DA AMAZÔNIA LTDA ...
