Wiring Harnesses - Allison MD 3060 Troubleshooting Manual

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
1–7.

WIRING HARNESSES

A. External Wiring Harness (Figures 1–10 and 1–11)
The external wiring harness provides a connection between the ECU, the transmission (including engine,
turbine, and output speed sensors), the throttle position sensor, the vehicle interface module (VIM),
retarder control module, shift selectors, diagnostic tool connector, retarder, retarder temperature sensor,
accumulator, and vehicle interface. Many harnesses will include a bulkhead to separate cab and chassis
components. Also, many different styles and materials for harnesses are likely to be encountered.
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
MD/B 300/B 400
RETARDER CONNECTOR
(INCLUDES OUTPUT
SPEED SENSOR)
TEMPERATURE
CONNECTOR
HD/MD/B RETARDER
ACCUMULATOR "H"
SOLENOID
CONNECTOR
TRANSMISSION
CONNECTOR
CONNECTOR
NOTE: Illustration is not to scale.
*All HD/B 500 models
All Non-Retarder MD/B 300/B 400 models
Figure 1–10. WTEC II External Wiring Harness (Units Produced Before 9/94)
GENERAL DESCRIPTION
MD 3070
TRANSFER CASE
CONNECTOR
INTERFACE
HD/B 500
CONNECTOR
RETARDER
SENSOR
OUTPUT SPEED
SENSOR
*CONNECTOR
ENGINE
SPEED
SENSOR
RETARDER "K"
CONNECTOR
(HD/B 500)
Copyright © 1998 General Motors Corp.
St. Clair Technologies, Inc.
1111 Mikesell Street
Charlotte, Michigan 48813
Phone: (517) 541-8166
Fax: (517) 541-8167
RETARDER
VEHICLE
MODULATION
INTERFACE
REQUEST (RMR)
MODULE
SENSOR CONNECTOR
(VIM)
VEHICLE
CONNECTOR
WIRING
(VIW)
OPTIONAL
BULKHEAD
CONNECTOR
WIRING
HARNESS
TURBINE
SPEED
TPS
SENSOR
CONNECTOR
CONNECTOR
(HD/B 500)
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
ELECTRONIC CONTROL UNIT
(ECU)
CONNECTORS
DIAGNOSTIC
DATA READER (DDR)
CONNECTOR
OPTIONAL
DEUTSCH DDR
CONNECTOR
REMOTE SERIAL
INTERFACE
CONNECTOR
V01647
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