Service Manual

Multi Pro 5800Page 6 − 66Electrical System
Brake Pedal Switch
The brake pedal switch is a mechanical plunder switch
used to monitor brake pedal movement. The switch has
a normally open set of contacts and a normally closed
set of contacts. The brake pedal switch is mounted to the
frame under the floorboard and is actuated by an ad-
justable strike plate attached to the brake lever (Fig. 93).
See Brake Pedal Switch in the Adjustments section of
this chapter for additional information. The machine will
not start if the operator seat is unoccupied and the park-
ing brake is not engaged.
The normally closed contacts are open while the brake
pedal is at rest and close when the brake is applied. The
normally closed contacts are used as an input to the
TEC. The normally open set of contacts are closed while
the pedal is at rest and open when the brake is applied.
The normally open contacts are used to create a holding
circuit for the speed lock system.
Testing
The brake pedal switch and its circuit wiring can be
tested as a TEC input or qualifier using the InfoCenter
Display (see InfoCenter Display − Diagnostics Screen in
this chapter). If testing determines that the switch and
circuit wiring are not functioning correctly, proceed with
the following test procedure:
1. Park machine on a level surface, stop engine and en-
gage parking brake. Remove key from ignition switch.
2. Locate the brake pedal switch and disconnect the
wire harness electrical connector from the switch.
3. With the use of a multimeter (ohms setting), the
switch functions may be tested to determine whether
continuity exists between the various terminals for each
position. The switch terminals are marked as shown
(Fig. 94) and the circuitry of the spray pump enable and
agitation switches is shown in the chart (Fig. 92). Verify
continuity between switch terminals.
BRAKE PEDAL
POSITION
NORMALLY
CLOSED
TERMINALS
NORMALLY
OPEN
TERMINALS
AT REST OPEN CLOSED
APPLIED CLOSED OPEN
Figure 92
4. Replace switch if necessary.
1
2
1. Brake pedal switch 2. Wire harness connector
Figure 93
1
2
3
1. Switch plunger
2. Normally closed switch
terminals
3. Normally open switch
terminals
Figure 94
5. If the brake pedal switch tests correctly and a circuit
problem still exists, check wire harness (see Electrical
Schematic and Wire Harness Drawings in Appendix A
in this manual).
6. Connect the wire harness connector to the switch af-
ter testing is complete.