Traction Neutral Sensor (Machine Serial Number Above 316000000) - Toro Groundsmaster 3280-D Service Manual

Traction Neutral Sensor (Machine Serial Number above 316000000)

Testing the Traction Neutral Sensor
Electrical System: Testing the Electrical Components
g226812
1. Traction neutral sensor
2. Sensor bracket
The traction neutral sensor is a normally open proximity switch that closes when
the traction pedal is in the neutral position. The sensor is located under the seat
and mounts to a sensor bracket over the hydraulic pump
sensing plate for the traction neutral sensor is the neutral arm.
The Standard Control Module monitors the operation of the traction neutral
sensor. If the key switch is in the O
neutral position, the SCM neutral input LED should be illuminated.
1. Park the machine on a level surface, lower the cutting deck, set the parking
brake, and shut off the engine.
2. Before you disconnect the traction neutral sensor for testing, ensure that
you test the sensor and its circuit wiring as a SCM input; refer to
Control Module (SCM) (page
3. If the SCM verifies that the sensor and circuit wiring are functioning correctly,
then no more switch testing is necessary.
4. If the SCM determines that the traction neutral sensor and circuit wiring are
not functioning correctly, proceed with the test.
5. Raise the operator seat and remove the seat plate.
6. Locate the traction neutral sensor.
7. Turn the key switch to the R
the LED on the cable end of the traction neutral sensor. The LED should be
illuminated when the traction pedal is in the neutral position.
8. With the key switch is still in the R
the traction pedal either forward or reverse and check the LED on the cable
end of the traction neutral sensor. The LED should not be illuminated when
the traction pedal is pressed.
Figure 148
3. Neutral arm
4. Jam nut (2 each)
position and the traction pedal is in the
N
6–3).
position (do not start the engine) and check
UN
position (do not start the engine), press
UN
Page 6–48
5. Lock washer (2 each)
(Figure 148). The
Standard
Groundsmaster ® 3280-D/3320
05138SL Rev B