9-5 Sedan (9600) L4-2.3L Turbo (B235) (2000)
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Irrespective of which system is contacted, the diagnostic tool will first check with the aid of the DICE that all systems in the car connected to a bus are
awake and in communication. If any control module connected to a bus is missing, this will be displayed on the diagnostic tool. Thus, all control modules
connected to a bus are communicating correctly if the diagnostics tool does not give a warning.
Intermittent bus faults
The Trionic control module and the transmission control module (TCM) continuously check that all control modules from which they obtain information
are communicating correctly. If intermittent faults occur in bus communication, diagnostic trouble codes will be generated in the Trionic and
transmission control modules. The cause of the fault may be that the control module concerned has lost power or one of the bus leads is disconnected.
In the case of an intermittent bus fault, the diagnostic trouble code text will refer to a fault diagnosis procedure described in the "Bus and diagnostics
communication" category.
Incorrect values on the bus
A diagnostic trouble code will be generated in the Trionic and transmission control modules if any information they obtain from the bus is incorrect. The
trouble code text indicates the system where the fault has occurred.
For further information on the bus, see information bus.
The PMM uses the following information:
PMM outputs the following information:
