Toro Greensmaster TriFlex 3320/3420 Service Manual page 209

NOTE: Solenoid coil resistance should be measured
with solenoid at approximately 68
may be slightly different than listed at different tempera-
tures. Typically, a failed solenoid coil will either be
shorted (very low or no resistance) or open (infinite re-
sistance).
4. Using a multimeter (ohms setting), measure resis-
tance between the two (2) connector terminals on the
solenoid valve coil. The resistance for the solenoid coils
is identified below:
Solenoid Valve Coil
S1, S3 and S4 (lift)
S2 (lift)
Leak Detector
Greensmaster 3320/3420
o o
F (20 C). Resistance
Resistance
8.8 ohms
7.1 ohms
7.2 ohms
Page 6 - - 59
5. If solenoid coil resistance is incorrect, replace sole-
noid (refer to appropriate control manifold service pro-
cedures in the Service and Repairs section of Chapter
5 -- Hydraulic System).
NOTE: The lift manifold S1, S3 and S4 coils are identi-
cal. To assist in troubleshooting, identical solenoid valve
coils can be exchanged. If the problem follows the ex-
changed coil, an electrical problem likely exists with the
coil. If the problem remains unchanged, something oth-
er than the solenoid coil is the problem source (e.g.
switch, circuit wiring, hydraulic problem).
6. After coil testing is completed, connect wire harness
electrical connector to the solenoid valve coil.
7. Secure all machine components that were removed
to access hydraulic manifold.
Electrical System