Speed Sensor; Vehicle Speed Sensor - Polaris Sportsman 850 Service Manual

SPEED SENSOR

VEHICLE SPEED SENSOR

The vehicle speed sensor is mated to the transmission housing and reads the speed of the transmission output gear.
Battery voltage is supplied to the sensor on the ORANGE circuit and is energized when the OFF/RUN and ignition
switches are in the RUN and ON positions.
To test the circuit:
1. Turn the ignition key to the "ON" position and move the OFF/RUN switch to "RUN".
2. Verify there is battery voltage present on the ORANGE circuit. If voltage is not found, inspect the ORANGE splices
/ circuits, LH control assembly, and ignition switch.
3. If voltage is found, test the BROWN ground circuit. Verify there is continuity between the circuit and chassis
ground.
4. If all circuits function, remove the speed sensor from the transmission. Verify the sensor is not damaged.
5. Test the speed sensor using the following tools:
• Hall Sensor Probe: PN 2460761
• Static Timing Light Tool: PN 2871745
6. Connect the tools together as shown below.
7. Insert the sensor probe's 3 terminals into the speed sensor as follows:
• WHITE wire into pin C.
• BLACK wire into pin B.
• RED wire into pin A.
8. Verify a good 9V battery is connected to the timing light tool.
9. Pass the blade of a screwdriver back and forth across the sensor tip. The timing light tool LED should illuminate
each time the blade passes the sensor face.
10. If the test fails, replace the speed sensor.
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