Toro GroundsmasterR 4300-D Service Manual page 166

Cutting Deck Operating Problems (Continued)
Problem
The rear cutting decks do not operate. Front cutting
decks operate. Cutting decks are able to raise and
lower.
None of the cutting decks will lower.
None of the cutting decks will raise.
One cutting deck will not raise or lower, but all other
cutting decks will raise and lower.
Electrical System
Possible Causes
Deck control manifold PRV1 solenoid coil or circuit
wiring is faulty.
A hydraulic problem in rear mow circuit exists (see
Troubleshooting section of Chapter 4 - Hydraulic
System).
TEC controller is faulty.
Mow speed limiter is in the transport position.
Lower/mow switch on joystick or circuit wiring is faulty.
Mow/transport switch or circuit wiring is faulty.
Lift control manifold PRV solenoid coil or circuit wiring
is faulty.
Lift control manifold S1 solenoid coil or circuit wiring is
faulty.
A hydraulic problem in cutting deck lift/lower circuit
exists (see Troubleshooting section of Chapter 4 -
Hydraulic System).
TEC controller is faulty.
Raise switch on joystick or circuit wiring is faulty.
Lift control manifold PRV solenoid coil or circuit wiring
is faulty.
Lift control manifold S2 solenoid coil or circuit wiring is
faulty.
A hydraulic problem in cutting deck lift/lower circuit
exists (see Troubleshooting section of Chapter 4 -
Hydraulic System).
TEC controller is faulty.
A hydraulic problem in cutting deck lift/lower circuit
exists (see Troubleshooting section of Chapter 4 -
Hydraulic System).
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