9-3 Hatchback (9400) L4-2.0L Turbo (B205) (2000)
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Control module TCM (502)
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Control module M2.10.3 (505)
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MIU (540)
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SID (541)
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Control module ABS (547)
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Control module STC (565)
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Control module Trionic OBDII (589)
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Control module EDC 15 (595)
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Control module auxiliary heater (597)
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Diesel pump (598)
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Control module DICE (628)
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Control module TWICE (632)
P-bus and I-bus
A bus is understood to be the leads with which information is sent digitally and serially. Digital means that the voltage difference between the leads has
only two values, approximately 0 V and 5 V. The information is coded so that different combinations of 0 V and 5 V pulses have different meanings.
Serial means that the information is sent in "packets" which are transmitted one after the other in very rapid succession.