Copyright © 1998 General Motors Corp. P–35
WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
APPENDIX P — INPUT/OUTPUT FUNCTIONS
WARNING!
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
features which differs from that shown could result in damage to equipment or
property, personal injury, or loss of life. ALLISON TRANSMISSION IS NOT
LIABLE FOR THE CONSEQUENCES ASSOCIATED WITH MISWIRING
OR UNINTENDED USE OF THESE FEATURES.
PTO OVERSPEED INDICATOR
USES: Turn on dash light when PTO reaches an overspeed condition.
VARIABLES TO SPECIFY: Rpm to turn ON; rpm to turn OFF.
VOCATIONS: Various
Figure P–34. PTO Overspeed Indicator
SWITCHED
POWER
V05038
WIRE 105
PTO OVERSPEED INDICATOR
PTO
OVERSPEED
Output switches to ground when PTO speed (engine speed)
exceeds a calibration value.
Output switches to open when engine speed falls below a
lower calibration value.
PTO OVERSPEED INDICATOR
PTO
OVERSPEED
SWITCHED
POWER
If current in lamp circuit exceeds
0.5 amp, ground lamp through
a relay.
NC
COM
NO
1
ECU
VIW
CONNECTOR
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