Toro Reelmaster 3100-D Service Manual page 243

Testing (continued)
Reelmaster ® 3100-D/3105-D
20252SL Rev A
g346656
1. COM B terminal
2. NO B terminal
3. NC B terminal
4. If the SCM determines that the PTO switch and circuit wiring are not
functioning correctly, then test the PTO switch as follows:
A. Remove cover from control panel to gain access to PTO switch.
B. Ensure that the key switch is in the OFF position. Disconnect the wire
harness connector from the PTO switch.
C. The PTO switch terminals are identified in
the PTO switch is shown in the
use of a multimeter (ohms setting), test the switch functions to determine
if the continuity exists between the various terminals for each switch
position. Check the continuity between the switch terminals.
Circuit Logic Table
Switch Position
OFF (DOWN)
ON (UP)
D. Replace the PTO switch if testing determines that the switch is damaged.
E. If the PTO switch testing is correct and a circuit problem still exists, check
the wire harness; refer to the Electrical Schematics and Wire Harness
Drawings/Diagrams in
F. After you complete the testing, connect the machine wire harness
connector to the PTO switch. Install control panel cover.
Figure 124
4. COM C terminal
5. NO C terminal
6. NC C terminal
Circuit Logic Table (page
Closed Circuits
COM B + NC B
COM C + NC C
COM B + NO B
COM C + NO C
Appendix A (page
Page 6–19
Figure 124 and the circuitry of
6–19). With the
Open Circuits
COM B + NO B
COM C + NO C
COM B + NC B
COM C + NC C
A–1).
Electrical System: Component Testing