Allison Transmission - WTEC II Electronic Controls PDF doc  PDF docs: Troubleshooting Manual

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Allison Transmission - WTEC II Electronic Controls PDF doc provides troubleshooting information for Allison Transmission (AT). MD/HD/B Series Transmissions. Service Manuals SM2148EN and SM2457EN.

This PDF manual includes:

Description of the WTEC II electronic control system.
Description of the electronic control system components.
Description of diagnostic codes, system responses to faults, and troubleshooting.
Wire, terminal, and connector repair information.


Specific instructions for using many of the available or required service tools and equipment are not included in this manual. The service tool manufacturer will furnish instructions for using the tools or equipment.

Additional information may be published from time to time in Service Information Letters (SIL) and will be included in future revisions of this and other manuals. Please use these SILs to obtain up-to-date information concerning Allison Transmission products.

This publication is revised periodically to include improvements, new models, special tools, and procedures. A revision is indicated by a letter suffix added to the publication number. Check with your Allison Transmission service outlet for the currently applicable publication. Additional copies of this publication may be purchased from authorized Allison Transmission service outlets. Look in your telephone directory under the heading of Transmissions Truck. Tractor, etc.

Take time to review the Table of Contents and the manual. Reviewing the Table of Contents will aid you in quickly locating information.

Allison Transmission - WTEC II Electronic Controls PDF doc covers the following models:

  • MD/HD/B SERIES TRANSMISSIONS
  • WTECII Controls (Pre-TransID and TID 1)

WTECII Controls (Pre-TransID and TID 1)

  • MD 3060/MD 3066/MD 3560(P)(R)
  • MD 3070PT

MD 3070PT

  • HD4060/HD4560(P)(R)
  • B 300/B 400/B 500(P)(Fi)

B 300/B 400/B 500(P)(Fi)

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