Sunday 11 November 2018

Computers/Controls - ISTA Test Plan Priority Error


Computers/Controls - ISTA Test Plan Priority Error



SI M 07 02 10



Workshop Environment Systems



January 2010



Technical Service



SUBJECT



ISTA Test Plan Priority Error



2002-2006 Mini Cooper (R50) L4-1.6L (W10) Page 346



MODEL



All



SITUATION



When diagnosing a vehicle using ISTA (Integrated Service Technical Application), fault code test plans are intended to be listed by "Priority".



However, the priority given to test plans by ISTA may not be reliable. This may lead to unnecessary diagnosis being performed.



CAUSE



When ISTA was introduced, the entire diagnostics from DIS were migrated over to ISTA. Until all of the diagnostic data has been revised within



ISTA, this type of error may occur.



PROCEDURE



Before starting diagnosis, the entire test schedule should be considered. Always use fault symptom diagnosis when available, and use the customer



complaint as the basis for determining which test plan to start first.



Note:



With each ISTA release, the priority given in the test schedule will become more reliable.