Engine Management System
FAULT DIAGNOSIS HINTSThe 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 of that system.