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W T E C I I E L E C T RO N I C C O N T RO L S T RO U B L E S H O OT I N G M A N UA L
ii
Copyright © 1998 General Motors Corp.
This manual provides troubleshooting information for Allison Transmission Division, MD/HD/B Series
Transmissions. Service Manuals SM2148EN and SM2457EN, and Parts Catalogs PC2150EN and PC2456EN may
be used in conjunction with this manual.
This 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.
NOTE:
Allison Transmission is providing for service of WTEC II wiring harnesses and wiring harness
components as follows: (See Service Information Letter 1-WT-97 for further information.)
•
Repair parts for the internal wiring harness and for wiring harness components attached to the shift selector
will be available through the Allison Transmission Parts Distribution Center (PDC). Use the P/N from your
appropriate parts catalog or from Appendix E in this manual. Allison Transmission is responsible for
warranty on these parts.
•
Since January, 1998, all WTEC II external harnesses and external harness components must be obtained
from St. Clair Technologies Inc. (SCTI). SCTI provides parts to any Allison customer or OEM and is
responsible for warranty on these parts. SCTI recognizes ATD, manufacturers, and SCTI part numbers.
SCTI provides a technical HELPLINE at 519-627-1673 (Wallaceburg). SCTI has parts catalogs available.
The SCTI addresses and phone numbers for parts outlets are:
St. Clair Technologies, Inc.
1050 Old Glass Road
Wallaceburg, Ontario, Canada, N8A 3T2
Phone: (519) 627-1673
Fax: (519) 627-4227
St. Clair Technologies, Inc.
1111 Mikesell Street
Charlotte, Michigan 48813
Phone: (517) 541-8166
Fax: (517) 541-8167
St. Clair Technologies, Inc.
c/o Mequilas Tetakawi
Carr. Internationale KM 1969
Guadalajara – Nogales, KM2
Empalme, Sonora, Mexico
Phone: 011-52-622-34661
Fax: 011-52-622-34662
FOREWORD — How to Use This Manual
Содержание B 300
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