Toro Groundsmaster 3280-D Service Manual page 290

Testing the Relays (continued)
Electrical System: Testing the Electrical Components
g214499
5. Check the coil resistance between terminals the 85 and 86 with a multimeter
(ohms setting). The resistance should be approximately 72 ohms
162).
6. Connect the multimeter (ohms setting) leads to relay terminals 30 and 87.
The ground terminal 85 and apply +12 VDC to terminal 86. The relay should
make and break continuity between the terminals 30 and 87 as +12 VDC is
applied and removed from terminal 86.
7. Disconnect the voltage and leads from the relay terminals.
8. Replace the relay if testing determines that the relay is damaged.
9. If the relay 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
10. Connect the wire harness electrical connectors to the relay after you
complete the testing.
11. Connect the positive (+) cable to the battery and then connect the negative
(-) cable to the battery; refer to
12. Install the control panel if the glow relay was accessed. Lower and secure
the hood if the accessory relay or cab power relay was accessed.
Figure 162
Appendix A (page A–1).
Servicing the Battery (page
Page 6–62
(Figure
6–81).
Groundsmaster ® 3280-D/3320
05138SL Rev B