Start (Briggs/Daihatsu Gas and Diesel Engine) and Fuel Pump (Briggs/Daihatsu Gas
Engine) Relay
The start relay used on Workman vehicles with a Briggs/
Daihatsu gasoline or diesel engine and the fuel pump
relay on Workman vehicles with a Briggs/Daihatsu gaso-
line engine are identical. These relays are attached to
the frame near the hydraulic oil filter.
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.
86
85
87A
87
1.
Disconnect the harness connector from the relay that
is to be tested.
2.
Using a multimeter (ohms setting), measure coil re-
30
sistance between terminals 85 and 86 (Fig. 10). Resist-
ance should be between 70 and 90 ohms.
Figure 10
3.
Connect multimeter (ohms setting) leads to relay ter-
minals 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.
4.
Disconnect voltage from terminal 85 and multimeter
lead from terminal 87.
5.
Connect multimeter (ohms setting) leads to relay ter-
minals 30 and 87A. Apply +12 VDC to terminal 85. The
relay should make and break continuity between termi-
nals 30 and 87A as +12 VDC is applied and removed
from terminal 85.
6.
Disconnect voltage and multimeter leads from the
relay terminals. Reconnect relay to vehicle wire har-
ness.
Electrical System
Page 8 – 10
Workman 3000/4000 Series
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