Toro Groundsmaster 4500-D Series Service Manual page 310

Fuse Identification and Function (continued)
Fuse Testing
Electrical System: Component Testing
Fuse A−5 (10 Amp) protects power supply to the engine control unit (ECU).
Fuse B−1 (7.5 Amp) protects TEC controller 1 output power supply for the two
(2) PTO solenoids (PRV1 and PRV2), the cooling fan speed solenoid (TS) and
counterbalance solenoid valve (TS).
Fuse B−2 (7.5 Amp) protects TEC controller 2 output power supply for right deck
engage solenoid (SV1) and left deck engage solenoid (SV2) on Groundsmaster
4700−D machines.
Fuse B−3 (2 Amp) protects the power supply to the InfoCenter display.
Fuse B−4 (10 Amp) protects the power supply to the operator air ride seat circuit.
Fuse B−5 (2 Amp) protects power supply for the logic power circuits for TEC
controller 1.
Fuse C−1 (7.5 Amp) protects TEC controller 1 output power supply for center
decks raise solenoid (S5), center decks float solenoid (S6) and two speed shift
solenoid (SV).
Fuse C−2 (7.5 Amp) protects TEC controller 2 output power supply for right
deck lower solenoid (S8), right deck float solenoid (S9) and enable solenoid (S1)
on Groundsmaster 4700−D machines.
Fuse C−3 (10 Amp) protects the power supply to the powerpoint.
Fuse C−4 position available for optional kit.
Fuse C−5 (2 Amp) protects power supply for the logic power circuits for TEC
controller 2 on Groundsmaster 4700−D machines.
Fuse D−1 (7.5 Amp) protects TEC controller 1 output power supply for hydrostat
forward solenoid (C1) and hydrostat reverse solenoid (C2).
Fuse D−2 (7.5 Amp) protects TEC controller 2 output power supply on
Groundsmaster 4700-D machines.
Fuse D−3 position available for optional kit.
Fuse D−4 position available for optional kit.
Fuse D−5 (10 Amp) protects the power supply to telematics.
Maxi Fuse M1 (60 Amp) supplies the power to the operator cab (if equipped).
Turn ignition switch to the RUN position (do not start engine). With the fuse
installed in the fuse block, use a multimeter to verify that 12 VDC exists at both
of the terminal test points on the fuse. If 12 VDC exists at one of the fuse test
points but not at the other, the fuse is faulty.
1. Ensure that the key switch is in OFF position and the key is removed from
the key switch.
2. Open power center cover from operator platform to access fuses.
3. Remove fuse from fuse block for testing. Fuse should have continuity across
the terminals.
4. After fuse testing is completed, install known good fuse into fuse block.
5. Replace the fuse if testing determines that it is damaged.
Page 6–28 Groundsmaster ® 4500-D/4700-D
19245SL Rev A