Generic Scan Tool (GST) Function: Description

Generic Scan Tool (OBDII 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 manual.

Fig 1: Identifying Generic Scan Tool Diagnostic Test Modes

Courtesy of NISSAN MOTOR CO., U.S.A.