The SAE J1962 diagnostic connector consists of two mating connectors, the vehicle connector and the test equipment connector.

This document: a.) Defines the functional requirements for the vehicle connector. These functional requirements are separated into four principal areas: connector location/access, connector design, connector terminal assignments, and connector electrical interface requirements. b.) Defines the functional requirements for the test equipment connector. These functional requirements are separated into three principal areas: connector design, connector terminal assignments, and connector electrical interface requirements.

The scope of this document does not include the needs of long-term retention, such as in-flight recorder type applications. To ensure long-term retention, steps outside of the scope of this document must be taken.