The SAE J1962 diagnostic connector consists of two mating 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; and b.) defines the functional requirements for the test equipment connector. These functional requirements are separated into three principal areas: connector desig,n 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, additional steps outside of the scope of this document must be taken.