Start/Run Solenoid
The start/run solenoid provides a current path between
starter/generator and the vehicle electrical circuits. This
solenoidisenergizedwhentheignition switchisONand
the accelerator pedal is depressed. The solenoid is at-
tached beneath the cargo box to a bracket on the right
hand side of the rear frame (Fig. 8).
8
7
1
6
Testing
5
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
4
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.
2
3
Figure 8
1.
Apply parking brake. Make sure engine is off.
Place machine shift lever in the NEUTRAL position.
1.
2.
3.
4.
Electrical cover
5.
6.
7.
8.
Nut (2 used)
Flange nut (2 used)
Start/run solenoid
Screw (2 used)
Lock washer (2 used)
Nut (2 used)
Rear frame
2.
Raise cargo box and secure with prop rod. Gain ac-
cesstostart/runsolenoidbyremovingtheelectricalcov-
er.
2
3.
Disconnect negative (black) cable from battery and
1
then disconnect positive (red) cable (see Battery Ser-
vice in the Service and Repairs section of this chapter).
1
4.
for assembly purposes. Disconnect wire harness con-
nectors from solenoid.
Note wire connector locations on start/run solenoid
2
5.
Apply 12 VDC directly across the solenoid coil posts
(steel). The solenoid should click as the solenoid coil is
energized. Make sure resistance across the main con-
tact posts (copper) is less than 1 ohm.
6.
Remove voltage from solenoid coil posts. The sole-
WIRING
noid should click as the solenoid coil is de--energized.
Make sure resistance across the main contact posts is
infinite ohms.
2
DIAGRAM
2
7.
should be approximately 13.5 ohms.
Resistance across the solenoid coil posts (steel)
1
1
8.
9.
battery cable and wire to fuse block on one main contact
postandstarter/generatorcableandwiretoregulatoron
the other main contact post. Connect battery cables.
Make sure to connect positive (red) cable first and then
connect negative (black) cable.
Replace start/run solenoid if necessary.
Figure 9
2.
1.
Main posts (copper)
Solenoid posts (steel)
Connect electrical connections to solenoid: positive
NOTE: Voltage is supplied to the solenoid on the Work-
man whenever the key is in the ON position and the ac-
celerator pedal is depressed.
Electrical System
Page 6 -- 10
Workman MD/MDX
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