Diode Assemblies - Toro Multi Pro 5800 Service Manual

Diode Assemblies

The Multi Pro 5800 wiring harness includes several
diode assemblies (Fig. 45). The diode assemblies plug
into the vehicle wire harness at various locations (see
wire harness drawings in Chapter 8 -- Foldout Draw-
ings).
The engine start circuit includes a diode for circuit
protection from voltage spikes that occur when the start-
er solenoid is de--energized.
The speed lock circuit includes two (2) diodes. One of
the diodes is used to provide a latching circuit for the
speed lock relay. The second diode is used for circuit
protection from voltage spikes that occur when the
speed lock coil is de--energized.
The spray boom lift circuit includes four (4) diodes for cir-
cuit logic.
NOTE: If optional kits are installed on machine, addi-
tional diodes may exist in wire harness.
Testing
The diodes can be individually tested using a digital
multimeter (diode test or ohms setting) and the table to
the right.
Electrical System
1
1. Diode assembly
2. Male terminal
Multimeter
Red Lead (+)
on Terminal
Female
Male
Page 5 - - 30
Figure 45
3. Female terminal
Multimeter
Black Lead (- -) Continuity
on Terminal
Male YES
Female
Multi Pro 5800
2
3
NO