Toro Reelmaster 3550-D Service Manual page 216

C. Solenoid coil resistance should be measured
with solenoid at approximately 68F (20C). Resist-
ance may be slightly different than listed at different
temperatures. Typically, a failed solenoid coil will ei-
ther be shorted (very low or no resistance) or open
(infinite resistance). Use a multimeter (ohms setting)
and measure resistance between the two (2) con-
nector terminals on the solenoid valve coil. The re-
sistance for the solenoid coils is identified below:
Solenoid Valve Coil
PRV (mow)
S1, S2, S3 and S4 (lift)
Electrical System
Resistance
7.1 ohms
5. After coil testing is completed, connect wire harness
8.8 ohms
connector to the solenoid valve coil(s).
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NOTE: To assist in troubleshooting, identical sole-
noid valve coils can be exchanged. If the problem fol-
lows the exchanged coil, an electrical problem likely
exists with the coil. If the problem remains un-
changed, something other than the solenoid coil is
the problem source (e.g. switch, circuit wiring, hy-
draulic problem). The lift manifold S1, S2, S3 and S4
coils are identical.
D. If solenoid coil resistance is incorrect, replace so-
lenoid (see the Service and Repairs section of Chap-
ter 4 − Hydraulic System in this manual).
Reelmaster 3550−D/3555−D/3575−D