Parking Brake Switch - Toro Reelmaster 5010- H Service Manual

Parking Brake Switch

The parking brake switch is a normally open proximity
switch. The parking brake switch is attached to the bot-
tom of the brake pedal (Fig. 44). The Toro Electronic
Controller (TEC) monitors the operation of the parking
brake switch.
When the parking brake is not applied, the parking brake
detent is positioned near the target end of the parking
brake switch so the switch is closed. The parking brake
detent is moved away from the switch when the parking
brake is applied causing the switch to open.
Testing
NOTE: Before disconnecting the parking brake switch
for testing, the switch and its circuit wiring should be
tested as a TEC controller input with the InfoCenter Dis-
play (see Diagnostics Screen (Backlap item) in the Info-
Center Display section of this chapter). If the InfoCenter
Display verifies that the parking brake switch and circuit
wiring are functioning correctly, no further brake switch
testing is necessary. If the InfoCenter Display deter-
mines that the parking brake switch and circuit wiring
are not functioning correctly, proceed with parking
brake switch testing using the following steps.
1. Park the machine on a level surface, engage the
parking brake, lower the cutting units and stop the en-
gine.
2. Turn ignition switch to the ON/PREHEAT position (do
not start engine) and check LED on cable end of parking
brake switch.
A. Switch LED should be illuminated when the
parking brake is released (brake not applied).
B. Switch LED should not be illuminated when the
parking brake pedal is depressed (brake applied).
3. If the parking brake switch LED did not function cor-
rectly:
A. Make sure that parking brake switch is properly
adjusted (see Parking Brake Switch in the Adjust-
ments section of this chapter). If necessary, adjust
switch and return to step 2 above.
B. Make sure ignition switch is OFF and disconnect
the parking brake switch connector from the ma-
chine wire harness.
Reelmaster 5010- H
C. Using a multimeter, verify that the machine wire
harness connector terminal for black wire is closed
(continuity) to ground.
D. Turn ignition switch to the ON/PREHEAT position
(do not start engine) and verify with a multimeter that
machine wire harness connector terminal for parking
brake switch pink wire has system voltage (12 VDC)
present.
E. Turn ignition switch to the OFF position.
F. If black wire is closed to ground, pink wire has
system voltage present and switch LED did not func-
tion, replace parking brake switch. Adjust switch dur-
ing installation (see Parking Brake Switch in the
Adjustments section of this chapter).
4. If the parking brake switch tests correctly and a cir-
cuit problem still exists, check circuit wire harness (see
Electrical Schematic and Wire Harness Drawings in
Chapter 9 - Foldout Drawings).
5. Make sure that wire harness electrical connector is
connected to the parking brake switch.
4
1. Parking brake switch
2. Lock washer (2 used)
3. Jam nut (2 used)
Page 5 - 53
5
3
2
2
3
1
6
Figure 44
4. Parking brake detent
5. Brake pedal
6. Switch LED location
Electrical System