Toro Groundsmaster 4300-D Service Manual page 314

Testing
Electrical System: Testing the Electrical Components
1. Park the machine on a level surface, lower the cutting decks, and shut off
the engine. Remove the key from the key switch.
2. To access the resistor, remove the sunshade from the top of the ROPS
extension.
3. Disconnect the wire harness connectors from the resistor module terminals.
4. Use a multimeter to check that the resistance values of the resistor module
as below (Figure 197).
Test Point 1
Motor Pin
Motor Pin
Motor Pin
5. Replace the resistor module if it fails the test.
6. If the resistor module testing is correct and a circuit problem still exists, check
the wire harness; refer to
7. After you complete the testing, connect the wire harness connectors to the
resistor module terminals
Test Point 2
Pin 1
Pin 2
Pin 3
Appendix A (page A–1)
(Figure 197) and install the sunshade.
Page 5–90
Expected Reading
Less than 9 ohms
Less than 6 ohms
Less than 3 ohms
- Foldout Drawings.
Groundsmaster ® 4300-D
16226SL Rev C