Bus communication

/ 9-3 (9400) / 2002 / 8. Body / Seats / Technical description / Bus communication

Bus communication

P bus and I bus

For further information on bus communication, see System overview or P-bus and I-bus .

PSM uses the following information:

Incoming information	Sensor system	Explanation
+54 circuit (On/Off)	DICE	DICE supplies PSM with information on the +54 circuit.
Diagnostics	DICE	PSM communicates with the diagnostic tool via DICE.
Driver's door (open/closed)	TWICE	TWICE sends information on whether the driver's door is open or closed.
Passenger door (open/closed)	TWICE	TWICE sends information on whether the passenger door is open or closed.

PSM sends out the following information:

Information Sent	User System	Explanation
Sound signal (acoustic confirmation)	SID	SID receives information on whether a memory store command has been performed and then gives an acoustic signal to indicate that the setting has been stored.
Diagnostics	DICE	The diagnostic tool Tech 2 receives information from the PSM system via DICE.