Testing Speedometer Sensor; Testing Gear Position Switch; Testing Shift Switch - Arctic Cat Sno Pro 120 Service Manual

Testing Speedometer
Sensor
 NOTE: The following test should be made using
MaxiClips and the Fluke Model 77 Multimeter set to
the DC Volt scale.
 NOTE: Prior to testing the sensor, inspect the three-
wire connector on the sensor harness for contamina-
tion, broken pins, and/or corrosion. With the engine
running, note that a power supply of 10.8-14.4 DC volts
exists at the main harness/speedometer connector.
Bearcat/F-Series/T-Series
F/M/XF
1. Elevate the rear of the snowmobile onto a suitable
safety stand.
2. Set the meter selector to the DC Voltage position.
3. At the sensor side of the plug-in, connect the red
maxiclip and meter lead to the white/orange lead;
then connect the black maxiclip and meter lead to the
black lead.
4. Connect a positive 12-volt DC power supply to the
red/blue wire; then connect a negative cable to the
black wire from the main harness side of the plug-in.
5. Rotate the driven pulley. The meter must read 0 volts
and 12 volts alternately.
5-24
Testing Gear Position
1. On the Bearcat/F-Series/T-Series, remove the six
torx-head cap screws securing the left-side footrest to
the chassis and remove the footrest; then un-thread the
switch from the gear case.
2. Disconnect the switch two-wire connector.
3. Connect one ohmmeter lead to one black wire; then
connect the other ohmmeter lead to the other black
wire.
4. With the reverse button pressed in, the meter must
read less than 1 ohm of resistance. With the reverse
button released, the meter must read OL (infinite
resistance).
 NOTE: If the meter does not read as specified in
either test, the switch is defective and must be
replaced.

Testing Shift Switch

 NOTE: The switch is located on the right-side han-
dlebar control. To access the switch, the control
PC252A
assembly must be disassembled.
1. Disconnect the two-wire connector from the handle-
bar control.
2. Connect one ohmmeter lead to one pin; then connect
the other ohmmeter lead to the other pin.
PC067B
3. With the reverse button pressed in, the meter must
read less than 1 ohm of resistance. With the reverse
button released, the meter must read OL (infinite
resistance).
 NOTE: If the meter does not read as specified in
either test, the swtich is defective and must be
replaced.
Switch
PC253B