Relays
1.
Verify coil resistance between terminals 86 and 85
5. Disconnect ground, voltage and multimeter leads
from relay terminals.
with a multimeter (ohms setting). Resistance should be
from80to90ohms.Thereshouldbecontinuity between
terminals 87A and 30.
2.
Connect multimeter (ohms setting) leads to relay
terminals 30 and 87. Ground terminal 86 and apply +12
VDC to terminal 85. The relay should make and break
continuitybetweenterminals30and87as12VDCisap-
plied and removed from terminal 85.
86
87A
87
3.
lead from terminal 87.
Disconnectvoltagefromterminal85andmultimeter
85
30
4.
Connect multimeter (ohms setting) leads to relay
Figure 9
terminals 30 and 87A. Apply +12 VDC to terminal 85.
The relay should break and make continuity between
terminals30and87Aas12VDCisappliedandremoved
from terminal 85.
Solenoid Valve Coils
Note:
Prior to taking small resistance readings with a
1
digital multimeter, short the test leads together. The me-
ter will display a small resistance value (usually 0.5
ohms or less). This resistance is due to the internal re-
sistance of the meter and test leads. Subtract this value
fromfromthemeasured valueofthecomponent youare
testing.
3
2
4
1.
nect solenoid valve electrical connector from machine
wire harness.
Make sure engine and ignition switch is Off.Discon-
5
Serial Number 230000801 To
260999999 Shown
2.
for solenoid to switch on. Remove voltage source from
solenoid.
Apply 12VDC source directly to the solenoid. Listen
Figure 10
1.
2.
3.
Solenoid S1 (7.2 ohm)
Solenoid S2 (7.2 ohm)
Solenoid S3 (7.2 ohm)
4.
5.
Solenoid S4 (7.2 ohm)
Solenoid S6 (8.1 ohm)
3.
Measure resistance between the two solenoid coil
connector terminals. The coil resistance for machines
with serial numbers under 260999999 is identified in
Figure 10. The coil resistance for machines with serial
numbers above 270000000 is identified in Figure 11.
3
4
2
1
4.
Replace solenoid if necessary. Reconnect solenoid
valve electrical connector to machine wire harness.
Serial Number Above
270000000
Shown
Figure 11
1.
2.
Solenoid S1R1 (7.1 ohm)
Solenoid S2 (8.6 ohm)
3.
4.
Solenoid S3 (7.1 ohm)
Solenoid S4 (8.6 ohm)
Electrical System
Page 5 -- 10 Rev. D
Greensmaster 3150
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Document Type | Service Manual |
| Language | English |
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
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