PDF-DOM

PDF-DOM Download: Testing Electronic Transmissions - Domestic Vehicles

This technical guide by the Automatic Transmission Rebuilders Association (ATRA) provides a logical framework for diagnosing computer-controlled domestic transmissions. Designed for qualified technicians, it focuses on isolating problems "inside or outside" the unit using three steps: reading diagnostic trouble codes, checking electrical signals, and forcing shifts. The manual includes instructions for building a DIY signal monitor and provides specific terminal identification, shift patterns, and failsafe gear ranges for various General Motors, Ford, and Chrysler models.