ISO/PAS 27145-4:2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Conventions
6 Vehicle and external test equipment connection requirements
  6.1 Overview
7 CAN based wired connection
  7.1 Initialization sequence
      7.1.1 External test equipment error detection provisions
      7.1.2 11 bit CAN identifier verification procedure
      7.1.3 29 bit CAN identifier verification procedure
  7.2 Application layer
      7.2.1 Diagnostic protocol communication types
      7.2.2 Diagnostic protocol timing parameters
      7.2.3 Timing performance requirements
  7.3 Presentation layer
  7.4 Session layer
  7.5 Network layer
      7.5.1 Addressing formats
      7.5.2 Data link layer interface
      7.5.3 Maximum number of WWH-OBD ECUs
      7.5.4 Functional addressing
      7.5.5 Physical addressing
      7.5.6 Network layer timing parameter values
      7.5.7 Definition of network layer parameter values
  7.6 Data link layer
  7.7 Physical layer
      7.7.1 Diagnostic connector
      7.7.2 External test equipment baud-rates
      7.7.3 External test equipment CAN bit timing
      7.7.4 External test equipment
Bibliography

ISO/PAS 27145-4:2006 defines the requirements to successfully establish, maintain and terminate communication with a vehicle that implements the requirements of the WWH-OBD global technical regulation. This requires plug and play communication capabilities of the vehicle, as well as any test equipment that intends to establish communication with a vehicle. ISO/PAS 27145-4:2006 details all the OSI layer requirements to achieve this goal.