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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.
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