Start/Run Solenoid - Toro Workman GTX Service Manual

Start/Run Solenoid

The start/run solenoid provides a current path between
the starter/generator and the vehicle electrical circuits.
The solenoid is located beneath the seat base near the
fuse blocks (Fig. 14).
The start/run solenoid is energized when:
A. The key switch is in the ON position and the ac-
celerator pedal is depressed.
B. The key switch is momentarily held in the START
position. The solenoid remains energized when the
switch is returned to the ON position.
Testing
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 val-
ue from the measured value of the component you are
testing.
1. Park vehicle on a level surface, stop engine, engage
parking brake and remove key from the key switch.
2. To access start/run solenoid, remove seat base as-
sembly with attached seats from vehicle.
3. To prevent unexpected circuit activity, disconnect ca-
bles from battery. Disconnect negative (black) cable first
and then disconnect positive (red) cable (see Battery
Service in the Service and Repairs section of this chap-
ter).
4. Note wire connector locations on start/run solenoid
for assembly purposes. Disconnect wire harness con-
nectors from solenoid.
5. Apply 12 VDC directly across the solenoid coil posts.
The solenoid should click as the solenoid coil is ener-
gized. Make sure resistance across the main contact
posts is less than 1 ohm with voltage applied to solenoid
coil posts.
6. Remove voltage from solenoid coil posts. The sole-
noid should click as the solenoid coil is de−energized.
Make sure resistance across the main contact posts is
infinite ohms without voltage applied to solenoid coil
posts.
7. Without voltage applied to solenoid coil posts, resis-
tance across the solenoid coil posts should be approxi-
mately 13.5 ohms.
8. Replace start/run solenoid if testing determines that
it is faulty.
Workman GTX Gasoline
9. When testing is complete, connect electrical connec-
tions to solenoid: positive battery cable and wire to fuse
block on lower main contact post and starter/generator
cable and wire to regulator on the upper main contact
post. Also, connect wire harness connectors (blue wire
and black wire) to coil posts.
10.Connect battery cables. Make sure to connect posi-
tive (red) cable first and then connect negative (black)
cable.
11. Install seat base assembly to vehicle.
3
5
2
1. Start/run solenoid
2. Positive battery cable
3. Cable to starter/gen
1
2
2
1
1. Main contact post
Page 5 − 13
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4
Figure 14
4. Harness wire (blue)
5. Harness wire (black)
2
1
WIRING
DIAGRAM
1
Figure 15
2. Solenoid coil post
Electrical System
2