Toro Outcross 9060 Service Manual page 272

Testing Relays with 4 Terminals (continued)
Electrical System: Electrical Component Testing
2. Disconnect the ground cable at the battery; refer to
(page 6–81).
3. Access the relay to be tested and disconnect the wire harness connector
from the relay. Remove the relay from the mounting bracket for testing.
g256779
Note: Prior to taking small resistance readings with a digital multimeter, short
the meter test leads together. The meter will display a small resistance value
(usually 0.5 ohms or less). This resistance is due to the internal resistance of
the meter and test leads. Subtract this value from the measured value for
the tested component.
4. Using a multimeter (ohms setting), measure coil resistance between
terminals 85 and 86. Resistance should be between 70 and 100 ohms.
5. Verify infinite resistance (no continuity) exists between terminals 30 and 87.
6. Connect multimeter (ohms setting) leads to relay terminals 30 and 87.
Ground terminal 86 and apply +12 VDC to terminal 85. The relay should
make and break continuity between terminals 30 and 87 as +12 VDC is
applied and removed from terminal 85.
7. Replace the relay as necessary.
8. If the relay tests correctly and a circuit problem still exists, check the wire
harnesses; refer to
9. Connect the wire harness, install any items removed to access the relay, and
connect the battery ground cable.
Figure 104
Relay with 4 Terminals
Appendix A (page A–1).
Page 6–64
Removing the Battery
Outcross 9060
18234SL Rev B