WTEC III ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL GENERAL DESCRIPTION 1–7. WIRING HARNESSES A. External Wiring Harness (Figure 1–9) WTEC III uses three external wiring harnesses to provide 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 fitting 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 wiring harnesses and wiring harness components as follows: 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. Repair parts for the 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 will have 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 St. Clair Technologies, Inc.
stocks a WTEC III external harness repair kit, P/N 29532362, as a source for some external harness repair parts. SCTI is the source for external harness repair parts. Copyright © 2001 General Motors Corp.