Toro Reelmaster 3100-D Service Manual page 247

Testing
Reelmaster ® 3100-D/3105-D
20252SL Rev A
The Standard Control Module (SCM) monitors the operation of the parking brake
switch. If the key switch is in the ON position and the parking brake is released,
the SCM parking brake off input LED should be illuminated.
1. Park the machine on a level surface, lower the cutting unit, and shut off the
engine.
2. Before you disconnect the parking brake switch for testing, ensure that you
test the parking brake switch and its circuit wiring as a SCM input; refer to
Standard Control Module (SCM) (page
3. If the SCM verifies that the switch and circuit wiring are functioning correctly,
then no more switch testing is necessary.
4. If the SCM determines that the parking brake switch and circuit wiring are not
functioning correctly, proceed with the test.
5. Remove cover from control panel to gain access to parking brake switch.
6. Locate the parking brake switch.
7. Make sure key switch is OFF and disconnect the parking brake switch
connector from machine wire harness.
8. Connect a multimeter (ohms setting) across the switch connector terminals
to check the continuity of the switch as follows:
A. When the switch plunger is extended, there should not be continuity
between the switch terminals.
B. When the switch plunger is pressed, there should be continuity between
the switch terminals.
9. Replace the switch if testing determines that the switch is damaged.
10. If the parking brake switch testing is correct and a circuit problem still exists,
check the main wire harness; refer to the Electrical Schematics and Wire
Harness Drawings/Diagrams in
11. After you complete the parking brake switch testing, connect the switch
connector to the machine wire harness.
12. Install cover to control panel.
6–45).
Appendix A (page
Page 6–23
A–1).
Electrical System: Component Testing