9-3 Arc/Aero (9440) L4-2.0L Turbo (2.0 T) (2004)
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Information Bus: Description and Operation
Brief Description
Brief Description
General
The bus is divided into a:
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P-bus (Powertrain bus)
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I-bus (Instrument bus)
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O-bus (Optical bus).
A control module sends a message by sending ones and zeros in a predefined order. The control module only sends a message if no other control module
is presently sending. The meaning of the combinations of ones and zeros is predefined so that all the control modules can interpret the information in the
same way. The message contains information about what is being sent and the value, for example Coolant temperature "100 degree C or A/C ON".
The data link connector can access both the P-bus and the I-bus. With an adapter, Tech2 can be connected to the data link connector and can
