Neutral (Proximity) Switch; Purpose; Location; How It Works - Toro GrandStand 74534 Service Manual

Neutral (Proximity) Switch

Purpose

The Neutral Switch is part of the safety circuit. The
neutral switch is used to ensure the motion control levers
are in the neutral position allowing the machine to start
(Fig. 735).
Fig. 735

Location

The Neutral Switches are located in the control tower
(Fig. 736).
Fig. 736
36" & 40" Toro GrandStand Service Manual

How It Works

The neutral (proximity) switch is a "normally open"
switch. The contacts close when a piece of steel (bolt) is
placed close to the switch. The specified gap between
the bolt and the face of the switch is .070" ± .020" (1.8
± .5mm). The switch will open when the bolt is moved
away. The switches are wired in series.

Testing

Turn the ignition key to the run position (do not start
the machine). While observing the black triangle for the
Neutral indicator on the hour meter, move one of the
control levers in and out of the neutral position. If the
black triangle turns on and off, the switch is good.
If the black triangle for the neutral indicator fails to turn
on when the control lever is moved in and out of the
neutral position, the switch needs to be checked for
continuity.
0001
1. Disconnect the switch from the wire harness.
2. With a multimeter set to the "Ohms" setting or a
continuity light, verify that there is continuity between
the terminals (control handles in neutral position).
3. With the the control handle moved from the neutral
position, there should be NO continuity between the
terminals.
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ELECTRICAL
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