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WTEC III ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
The connector information in this appendix is provided for the convenience of the servicing technician. The
connector illustration and pin identifications for connection to Allison Transmission components will be accurate.
Allison Transmission components are the ECU, speed sensors, retarder connectors, transmission connectors, and
shift selectors. Other kinds of connectors for optional or customer-furnished components are provided based on
typical past practice for an Allison-designed system.
Contact St. Clair Technologies, Inc. or your vehicle manufacturer for information on connectors not found in this
appendix.
NOTE:
The following abbreviation guide should be used to locate connector termination points for wires in
the WTEC III wiring harness(es).
Table D1. Appendix D Abbreviation Guide
Termination Point Abbreviation
Connector Name
AGND
Analog Ground
ASOL
Solenoid A -- Transmission Control Module
BSOL
Solenoid B -- Transmission Control Module
C3PS
C3 Pressure Switch -- Control Module
CSOL
Solenoid C -- Transmission Control Module
DDRD
Diagnostic Connector -- Deutsch
DDRP
Diagnostic Connector -- Packard
DSOL
Solenoid D -- Transmission Control Module
ECUS
Electronic Control Unit -- Selector (S) Connector
ECUS
Electronic Control Unit -- Vehicle (V) Connector
ECUT
Electronic Control Unit -- Transmission (T) Connector
ESOL
Solenoid E -- Transmission Control Module
GSOL
Solenoid F -- Transmission Control Module
GSOL
Solenoid G -- Transmission Control Module
HSOL
Retarder H Solenoid -- Retarder Housing Or Retarder Valve Body
J1939
J1939 Datalink From ECU Selector (S) Harness
JSOL
Solenoid J -- Transmission Control Module (7-Speed Only)
NE
Engine Speed Sensor
NO
Output Speed Sensor
NSOL
Retarder Accumulator Solenoid
NSOL
Solenoid N -- Transmission Control Module (7-Speed Only)
NT
Turbine Speed Sensor
OBDII
Diagnostic Connector -- GMC On Board Diagnostics
OLS
Oil Level Sensor
PSS
Primary Shift Selector
RMOD
Retarder Module (Units Built Prior To 1/98)
RMR
Retarder Modulation Request Device
RNGTRM
Chassis Ground Ring Terminal
RTEMP
Retarder Temperature -- Retarder Housing
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