PRE-RELEASE

Bus messages, V6 (diesel) engine management system

For a further description of the car's bus system, see System overview, bus and diagnostic communication, diesel .

The engine control module uses the following information:

Information	Values	Sent by	The value depends on the following sensor input, signal or function
A/C	ON/OFF	DICE	A/C (bus from ACC), coolant temperature (bus from engine control module), A/C pressure and evaporator temperature
A/C pressure	0 -30 bar	DICE	A/C pressure sensor
Diagnostics
Electrical load		DICE
Fuel quantity in tank		MIU	Level sensor, fuel
Immobilization	Code	TWICE	Immobilization function
Outdoor temperature		SID	Temperature sensor, outdoor air
Wheel speed	0-250	MIU	Wheel sensor

The engine control module transmits the following information:

Information	Values	Used by	The value depends on the following sensor input, signal or function
Check engine lamp	ON/OFF	MIU	Internal diagnosis
CRUISE lamp	ON/OFF	MIU	Cruise Control function
Fuel consumed since start	0-65535 ml	SID	Fuel injection function
Engine has started	ON/OFF	ACC, DICE, SID	Crankshaft position sensor
Engine speed and requested torque	0-6000 rpm	SID	Crankshaft position sensor
Engine temperature and atmospheric pressure		SID, DICE
Immobilization	Code	TWICE	Immobilization function