Status Identifier: Notes
GENERAL
There are status indicator (status identifiers) that can be read out for every diagnostic trouble code. The control module tests every connection (signal) or function more or less periodically, depending on the self-diagnosis' conditions for start.
By reading out the diagnostic trouble code with associated status identifier, then you obtain status for the diagnostic trouble code test that detects the malfunction, as well as if the malfunction exists now or not.
Status identifier, Counter and Frozen values are the most important factors to deciding the malfunction's nature, that is, to decide:
- when the malfunction was detected (frozen values, counters)
- what the driving conditions were at the time (frozen values)
- status for the test (self-diagnosis) (status identifier)
- how frequent the malfunction is (counter).
All status identifiers (or malfunction detection counters) do not have to be introduced in one control module, this varies from system too system. All status identifiers restarts the count every time a new driving cycle/operation cycle starts or when erasing diagnostic trouble codes. Status identifiers should be read off continuously as the different identifiers can be updated later on.
The following describes possible status identifiers.
Status identifiers for systems with diagnostics Volvo Diagnoses II is slightly different from status identifiers for diagnostic version Generic Global Diagnostics (GGD).
When erasing diagnostic trouble codes, the diagnostic trouble code's status identifier is erased.