Service Manual

GLOSSARY
Demystification Glossary 3 - 11
Module, KeyChoice™ Reverse
Operating System (Electric PTO
Clutch)
Purpose
The KeyChoice™ Reverse Operating System Module
(Figure 11) works with the KeyChoice™ switch, PTO
switch, and the reverse switch. It responds to the
reverse switch. If the override switch (KeyChoice™
switch) is not activated and the PTO is engaged, it will
stop the electric PTO clutch.
Figure 11
MVC-385X
How It Works
The KeyChoice™ Reverse Operating System Module
is made up of several components, such as diodes and
relays. When it is connected in the circuit, voltage is
applied to certain terminals of the KeyChoice™
Reverse Operating System module from the PTO
switch, reverse switch, and the override switch, which
energizes certain relays in the module. If voltage is not
applied to proper terminals on the KeyChoice™
Reverse Operating System Module, the electric PTO
clutch will stop.
Testing
The KeyChoice™ Reverse Operating System Module
must be removed from the wiring harness. Using a
multimeter check the following (Figure 12):
Figure 12
NMIR Module
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2
4
3
5
6
Glossary