Toro Groundsmaster 3280-D Service Manual page 256

Testing the Key Switch (continued)
Electrical System: Testing the Electrical Components
4. If the SCM determines that the key switch and circuit wiring are not
functioning correctly, then test the key switch as follows:
A. Remove the 4 thumb screws (item 3 in
panel to the fuel tank.
B. Ensure that the key switch is in the O
harness connector from the key switch.
C. The key switch terminals are identified in
the key 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
O
R
S
TART
D. Replace the key switch if testing determines that the switch is damaged.
E. If the key 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 key switch.
G. Secure the control panel to the machine with the 4 thumb screws.
FF
Circuit Logic Table (page
FF
UN
Appendix A (page
Page 6–28
Figure 128) that secure the control
position. Disconnect the wire
Figure 129 and the circuitry of
6–28). With the
Circuits
None
B+C+F, D+E
A+B+C
A–1).
Groundsmaster
05138SL Rev B
® 3280-D/3320