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Date: 100101
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
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.
PROCEDURE2010 Mini Cooper (R56) L4-1.6L (N12)
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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.
