Parking Brake Alarm Switch (If Equipped) - Toro Workman GTX Service Manual

Parking Brake Alarm Switch (If Equipped)

If your Workman is equipped with the optional parking
brake alarm, the audio alarm should sound whenever
the parking brake is applied. The parking brake alarm
switch is attached to the parking brake mount behind the
dash (Fig. 30).
A normally closed contact in the switch is opened when
the parking brake is released. When the parking brake
is applied, the switch is in its normally closed state. Only
two (2) of the switch terminals are used in the parking
brake alarm switch circuit.
Testing
1. Park vehicle on a level surface, stop engine, engage
parking brake and remove key from the key switch.
Place vehicle shift lever in the NEUTRAL position.
2. To access the parking brake alarm switch, remove
dash and position it toward the front of the vehicle (see
Dash in the Service and Repairs section of Chapter 6 −
Chassis). It is not necessary to remove choke cable from
dash.
3. Disconnect wire harness electrical connector from
the alarm switch (Fig. 30).
4. Connect a multimeter (ohms setting) across the
common and normally closed (NC) terminals of the
alarm switch (Fig. 31).
5. With the parking brake released (not applied), the
washer on the parking brake lever should be depressing
the lever on the alarm switch. In this switch position,
there should not be continuity (infinite ohms) between
the common and normally closed (NC) switch terminals.
6. With the parking brake applied, the washer on the
parking brake lever should not be depressing the lever
on the alarm switch. In this switch position, there should
be continuity (zero ohms) between the common and
NC switch terminals.
NOTE: The normally open (NO) switch terminal is not
used in the parking brake alarm circuit.
7. If testing determines that alarm switch is faulty, re-
place switch.
Electrical System
8. If the alarm switch tests correctly and a circuit prob-
lem still exists, check wire harness and alarm for prob-
lems.
9. After alarm switch testing is completed, connect wire
harness electrical connector to the switch.
10.Carefully position and secure dash to vehicle (see
Dash in the Service and Repairs section of Chapter 6 −
Chassis).
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1. Parking brake lever
2. Brake alarm switch
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2
3
1. Common terminal
2. NO terminal
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Figure 30
3. Wire harness connector
Figure 31
3. NC terminal
4. Switch lever
Workman GTX Gasoline
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