Toro ProLine H800 Service Manual page 241

Testing the Relays with 4 Terminals (continued)
Testing the Relays with 5 Terminals
ProLine H800
19241SL Rev A
10. 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
11. Install and secure the relay onto the mounting bracket. Connect the wire
harness electrical connectors to the relay.
12. Connect the positive (+) cable to the battery and then connect the negative
(-) cable to the battery; refer to
13. If removed, install the operator seat onto the machine; refer to
Operator Seat (page
14. If removed, install the left console onto the machine; refer to
Body Assembly (page
1. Park the machine on a level surface, lower the cutting deck, shut off the
engine, set the parking brake, and remove the key from the key switch.
2. To get access to the start relay, remove the operator seat; refer to
the Operator Seat (page
3. To ensure that the machine operation does not occur unexpectedly,
disconnect the negative (-) cable from the battery and then disconnect the
positive (+) cable from the battery; refer to
4. Locate the relay that is to be tested and disconnect the wire harness
connectors from the relay. Remove the relay from the mounting bracket for
testing.
Note: Before taking small resistance readings with a digital multimeter, short
the multimeter test leads together. The meter displays a small resistance
value (usually 0.5 ohms or less). This resistance is because of the internal
resistance of the multimeter and test leads. Subtract this value from the
measured value of the component that you are testing.
g223021
1. Coil terminal
2. Normally closed term.
5. Using a multimeter (ohms setting), measure coil resistance between
terminals 85 and 86
90 ohms (Figure 136).
6. Connect multimeter (ohms setting) leads to relay terminals 30 and 87.
Ground the 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. Disconnect voltage from terminal 85 and multimeter lead from terminal 87.
Appendix A (page A–1).
Servicing the Battery (page
7–17).
7–7).
7–17).
Servicing the Battery (page
Figure 136
3. Normally open term.
4. Common terminal
(Figure 136). Resistance should be between 70 and
Page 6–41 Electrical System: Testing the Electrical Components
6–46).
Installing the
Assembling the
Removing
6–46).