Engine Management System

FAULT DIAGNOSIS
The Intelligent Saab Tester (ISAT) scan tool is used for fault diagnosis and obtaining readouts of diagnostic trouble codes.

The Tech 2 is the ISAT scan tool's successor and will eventually replace the ISAT entirely.

Faults arising in systems with self-diagnosis are detected and saved in the system's control modules. These scan tools read the system's saved fault information and the fault is presented in the form of a diagnostic trouble code.

A fault diagnosis procedure for the selected system will be found in the System Diagnosis section for that system.