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Copyright © 1998 General Motors Corp.
1–7
GENERAL DESCRIPTION
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:
Figure 1–10. WTEC II External Wiring Harness (Units Produced Before 9/94)
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
OPTIONAL
DEUTSCH DDR
CONNECTOR
VEHICLE
INTERFACE
MODULE
(VIM)
CONNECTOR
MD/B 300/B 400
RETARDER CONNECTOR
(INCLUDES OUTPUT
SPEED SENSOR)
MD 3070
TRANSFER CASE
CONNECTOR
OUTPUT SPEED
SENSOR
*CONNECTOR
TRANSMISSION
CONNECTOR
ENGINE
SPEED
SENSOR
CONNECTOR
V01647
TPS
CONNECTOR
TURBINE
SPEED
SENSOR
CONNECTOR
(HD/B 500)
REMOTE SERIAL
INTERFACE
CONNECTOR
RETARDER “K”
CONNECTOR
(HD/B 500)
HD/MD/B RETARDER
ACCUMULATOR “H”
SOLENOID
CONNECTOR
OPTIONAL
BULKHEAD
CONNECTOR
WIRING
HARNESS
NOTE: Illustration is not to scale.
*All HD/B 500 models
All Non-Retarder MD/B 300/B 400 models
RETARDER
MODULATION
REQUEST (RMR)
SENSOR CONNECTOR
ELECTRONIC CONTROL UNIT
(ECU)
CONNECTORS
DIAGNOSTIC
DATA READER (DDR)
CONNECTOR
VEHICLE
INTERFACE
WIRING
(VIW)
CONNECTOR
HD/B 500
RETARDER
TEMPERATURE
SENSOR
CONNECTOR
Содержание B 300
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