Diagnosis Tool Function: Description
WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
Generic Scan Tool (OBD II scan tool) complying with SAE J1978 has 8 different functions explained below.
ISO9141 is used as the protocol.
The name "GST" or "Generic Scan Tool" is used in this service Article.
Courtesy of NISSAN MOTOR CO., U.S.A.