Service Manual

ELECTRICAL

8-8 36” & 40” Toro GrandStand Service Manual

Parking Brake Switch

Purpose

How It Works

The Parking Brake Switch is part of the safety circuit.

The parking brake switch is used to shut down the

engine if the machine leaves neutral with the parking

brake on (Fig. 737).

This is a “Normally Closed (NC)” switch. The letters

“NC” will be stamped on the terminals. When the parking

brake is engaged, the switch is closed and there is

continuity between the switch terminals.

Fig. 737 IMG-0001a

Location

The Parking Brake Switch is located inside the LH side

of the control panel, as part of the parking brake control

lever assembly (Fig. 738).

Fig. 738 DSCN-2213a

Testing

Turn the ignition key to the run position (do not start

the machine). While observing the black triangle for the

parking brake indicator on the hour meter, engage and

disengage the parking brake. If the black triangle turns

on and off, the switch is good.

If the black triangle for the parking brake indicator

fails to turn on when the parking brake is engaged

and disengaged, the switch needs to be checked for

continuity.

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 (plunger out).

3. With the plunger pushed in, there should be NO

continuity between the terminals.