Toro Reelmaster 3100-D Service Manual page 252

Testing
Electrical System: Component Testing
The Standard Control Module (SCM) monitors the operation of the backlap
switch. If the backlap switch is in the ON position, the SCM in backlap input LED
should be illuminated.
1. Park vehicle on a level surface, stop engine, apply parking brake and remove
key from key switch.
2. Before you disconnect the backlap switch for testing, ensure that you test
the switch and its circuit wiring as a SCM input; refer to
Module (SCM) (page
3. If the SCM verifies that the backlap switch and circuit wiring are functioning
correctly, no further switch testing is necessary.
4. If the SCM determines that the backlap switch and circuit wiring are not
functioning correctly, proceed with the following switch testing procedure.
5. Get access to reel drive manifold. Disconnect the harness electrical
connector from the backlap switch.
6. Check the continuity of the switch by connecting a multimeter (ohms setting)
across the switch connector terminals.
7. With the key switch in the OFF position, turn the backlap lever to the backlap
position while watching the multimeter. Continuity should be made as the
switch closes.
8. Turn the backlap lever to the mow position while watching the multimeter.
Continuity should be broken as the switch opens.
9. If backlap switch is faulty, replace switch. Make sure that dowel and ball are
placed in the manifold port before installing new switch in manifold. Torque
switch to 27 N- m (20 ft-lb).
10. If the backlap switch tests correctly and a circuit problem still exists, check
wire harness (see Electrical Schematic and Wire Harness Drawings in
Appendix A (page
11. After testing is completed, connect harness electrical connector to the
backlap switch and close access panel.
6–45).
A–1)).
Page 6–28
Standard Control
Reelmaster ® 3100-D/3105-D
20252SL Rev A