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Generic Scan Tool (GST) Function: Description
WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
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 information.
Courtesy of NISSAN MOTOR CO., U.S.A.