Toro Groundsmaster 5900 Series Service Manual page 382

Testing
Electrical System: Component Testing
6
5
g288609
1. Front power center (behind operator seat)
2. Diode block 1
3. Diode block 2
4. 24 Volt remote sense relay diode
5. 24 Volt contactor latch diode
Mini Diode Location
Diode Block 1 pins A−B
Diode Block 1 pins C−D
Diode Block 1 pins E−F
Diode Block 1 pins G−H
Diode Block 2 pins A−B
Diode Block 2 pins C−D
Diode Block 2 pins G−H
Note: Record the direction of the diode symbol or key before removing a mini
diode, and install the mini diode in the same orientation after testing.
1. Remove the diode from the wire harness or remove the diode block cover
and pull the mini diode from the diode block.
3
2
1
7
2 3
4
Figure 263
6. Radiator fan fault diode
7. Hydraulic oil cooler fan fault diode
8. Hydraulic oil cooler fan diode
9. Radiator fan diode
10. TEC power diode
Page 6–120
10
9 8
Mini Diode Function
24 Volt Remote Sense Relay
24 Volt Contactor Latch
Radiator Fan Fault
Hydraulic Oil Cooler Fan Fault
Hydraulic Oil Cooler Fan
Radiator Fan
TEC Power
Groundsmaster
16227SL Rev B
® 5900 & 5910