Pto Enable (Using “Pto” Switch) - Allison MD 3060 Troubleshooting Manual

W T E C I I E L E C T RO N I C C O N T RO L S T RO U B L E S H O OT I N G M A N UA L
APPENDIX P — INPUT/OUTPUT FUNCTIONS
WARNING! WARNING!
PTO ENABLE (USING "PTO" SWITCH)
USES: Permits PTO to be engaged only when engine speed and output speed are in allowable range and throttle is
low. Also disengages PTO if speeds are exceeded.
VARIABLES TO SPECIFY: Minimum and maximum engine speed for engagement, maximum engine speed for
allowable operation, minimum and maximum output speed for engagement, maximum output speed for
allowable operation.
VOCATIONS: Various (with usage of PTO)
ECU
VIW
CONNECTOR
These schematics show the intended use of the specified controls features which
These schematics show the intended use of the specified controls features which
have been validated in the configuration shown. Any miswiring or use of these
have been validated in the configuration shown. Any miswiring or use of these
features which differs from that shown could cause unscheduled operation of the
features which differs from that shown could result in damage to equipment or
PTO or other unpredictable operation resulting in damage to equipment or
property, personal injury, or loss of life. ALLISON TRANSMISSION IS NOT
property, personal injury, or loss of life. ALLISON TRANSMISSION IS NOT
LIABLE FOR THE CONSEQUENCES ASSOCIATED WITH MISWIRING
LIABLE FOR THE CONSEQUENCES ASSOCIATED WITH MISWIRING
OR UNINTENDED USE OF THESE FEATURES.
OR UNINTENDED USE OF THESE FEATURES.
SWITCHED
POWER
WIRE 118
PTO ENABLE INPUT
2
WIRE 112 PTO ENABLE
Relay shown de-energized
Figure P–3. PTO Enable (Using "PTO" Switch)
Copyright © 1998 General Motors Corp.
PTO
SWITCH
NC
F2
F3
COM
NO
VIM
DASH
LIGHT
PTO
PRESSURE
SWITCH
PTO
V05008
P–3