Toro Groundsmaster 328-D, Service Manual

Page: 189 / 402

Fusible Link Harness
The Groundsmaster 328–D and Groundsmaster 345
use three (3) fusible links for circuit protection. These
fusible links are located in a harness that connects the
starter B+ terminal to the main wire harness. If any of
these links should fail, current to the protected circuit will
cease. Refer to wire harness drawings in Chapter 6 –
Electrical System for additional fusible link information.
Use a multimeter to make sure that continuity exists be-
tween each terminal pin in connector P1 and connector
J1 at the starter (Fig. 7). If any of the fusible links are
open, replace the complete harness.
Diode Assembly
FUSIBLE LINK
FUSIBLE LINK
FUSIBLE LINK
Figure 7
Two (2) diode assemblies (Fig. 8) are used in the ma-
chine wire harness. Diode D1 is used for circuit protec-
tion from inductive voltage spikes that occur when the
starter motor is shut off. Diode D2 provides logic for the
interlock switches to allow the engine to run when the
traction pedal is in neutral and the PTO switch is off. The
diodes plug directly into the wiring harness.
Testing
The diodes can be individually tested using a digital
1
2
3
multimeter (diode test or ohms setting) and the table be-
Figure 8
low .
1. Diode 3. Female terminal
2. Male terminal
Multimeter Multimeter
Red Lead (+) Black Lead (–) Continuity
on Terminal on Terminal
Female Male YES
Male Female NO
Groundsmaster 300 Series Page 6A – 7 Electrical System (Rev. G)