1
General Information
Control . Power . Information . The new 5th Generation Electronic Shift
Selector from Allison puts it all at your fingertips . Literally . Getting started is
easy and the selector’s complete menu of prognostic and diagnostic tools
minimize downtime and keep you on the job . Use this handy reference
booklet for step-by-step instruction on how to get the most from your shift
selector and of course, your Allison fully automatic transmission .
The Allison Advantage
Your Allison Automatic is fully electronically controlled . The Allison
electronic controls package oversees the operation of the transmission,
controlling transmission upshifts and downshifts, and providing important
information on the operation of your drive system .
Through readouts on your shift selector, you will be able to monitor
transmission oil levels, read diagnostic codes and prognostic information .
This manual will help you understand shift selector readouts and enjoy
long, trouble-free operation of your Allison Automatic .
Diagnostics
The Transmission Control Module (TCM) of your Allison Automatic
monitors the transmission’s electronic controls; and when a problem
condition is detected, it:
• May restrict shifting
• Illuminates the CHECK TRANS* light on the instrument panel
• Registers a diagnostic code
Continued illumination of the CHECK TRANS light during vehicle
operation (other than start-up) indicates that the TCM has signaled
a diagnostic code .
NOTE: Displays apply only when using a 5th Gen TCM .
*
For some problems, diagnostic codes may be registered without the TCM
activating the
CHECK TRANS
light. Your Allison Authorized Service Network should
be consulted whenever there is a transmission-related concern. They have the
equipment to check for diagnostic codes and to correct problems.
