Diode Assembly; Resister Assembly - Toro Reelmaster 7000-D Service Manual

Diode Assembly

All Reelmaster 7000−D machines have a diode that is
used to protect the circuit from voltage spikes when the
engine starter solenoid is de−energized. The diode
plugs into the engine wiring harness near the starter mo-
tor (see engine wire harness drawings in Chapter 10 −
Foldout Drawings in this manual).
Machines with Yanmar diesel engines have an addition-
al diode that is used to protect the engine ECU from volt-
age spikes when the EGR relay is de−energized. The
diode plugs into the engine wiring harness near the en-
gine ECU (see Yanmar engine wire harness drawing in
Chapter 10 − Foldout Drawings in this manual).
Diode Test
The diode (Fig. 67) can be individually tested using a
digital multimeter (diode test or ohms setting) and the
table to the right.
Resistor Assembly
A 75 ohm resistor is necessary for proper ignition switch
operation on all Reelmaster 7000−D machines. The re-
sistor plugs into the console wire harness near the igni-
tion switch (see seat and console wire harness drawing
in Chapter 10 − Foldout Drawings in this manual).
On machines with Yanmar diesel engines (80 Amp alter-
nator) an additional 1.6K resister is necessary for proper
ignition switch operation. The resistor plugs into the en-
gine wire harness near the alternator (see Yanmar en-
gine wire harness drawing in Chapter 10 − Foldout
Drawings in this manual).
The resistor assemblies can be identified by their gray
color, resistor symbol and Toro part number on the end
of the resistor assembly body.
Testing
The resistor can be tested using a digital multimeter
(ohms setting). The resistance across the resistor ter-
minals should be either 75 ohms or 1.6K ohms depend-
ing on which resistor is tested.
Reelmaster 7000−D
1
1. Diode
2. Male terminal
Multimeter
Red Lead (+)
on Terminal
Female
Male
1. Resistor assembly
Page 6 − 61
Figure 67
3. Female terminal
Multimeter
Black Lead (−) Continuity
on Terminal
Male YES
Female NO
2
1
Figure 68
2. End of resistor body
Electrical System
2
3