Relays With 5 Terminals - Toro Sand Pro 3040 Service Manual

Relays with 5 Terminals

g354140
1. Relay – main
2. Relay – start
Testing Relays with 5 Terminals
Sand Pro ® 3040 and 5040
20251SL Rev A
The Sand Pro 3040/5040 machines use up to 4 relays that have 5 terminals. The
standard relays are located along the frame crossmember under the operator's
seat. A tag near each wire harness relay connector can be used to identify
each relay.
An additional 5 terminal relay is used to control the optional rear remote
hydraulics kit or the hydraulic switch kit. This relay is located behind the left
side rear wheel shroud.
Relays with 5 terminals:
•
The main relay supplies power to the machine control circuits. The main relay
is energized by the key switch when in the R
•
The start relay supplies power to the starter solenoid. The start relay is
energized the appropriate interlocks are in position to start the engine.
•
The interlock relay is used to open the engine ignition (magneto) circuit to
allow the engine to run. The relay is energized by the seat switch, the traction
neutral switch, diodes D1 and D2, and/or the optional seat switch relay as
part of the interlock system.
•
The optional seat switch relay is incorporated into the interlock circuit when
an optional rear hydraulics kit or hydraulic switch kit is installed. The relay
supplies power to the optional PTO switch. The relay is energized through
the seat switch when an operator is in the seat.
Refer to Figure 84 for this procedure.
1. Park the machine on a level surface, lower any attachments, engage the
parking brake, set the key switch to the O
from the switch.
2. Disconnect the ground cable at the battery; refer to
the Battery (page 6–31).
3. Raise the operator's seat.
4. Locate the relay that is to be tested and disconnect the wire harness
connectors from the relay. Check the relay and the harness connector for
damage or corrosion and clean or repair if necessary.
Figure 84
3. Relay – interlock
4. Optional relay – seat switch
FF
Page 6–19 Electrical System: Testing the Electrical Components
or S position.
UN TART
position and remove the key
Removing and Installing