Component description for the ME-SFI [ME] control unit

N3/10 ME-SFI [ME] control unit

Location

The ME-SFI [ME] control unit is located in the trunk, behind the right side paneling.

Task

The ME-SFI [ME] control unit controls, monitors and coordinates the entire engine control.

P07.61-3579-03

Function

The ME-SFI [ME] control unit is a subscriber on the Control Area Network (data bus/CAN bus) (CAN) and controls the following systems:

 Fuel supply

 Injection control

 Secondary air injection

 Lambda control

 Ignition system

 Immobilizer

Communication with the following components takes place via the CAN:

 Instrument cluster (A1)

 Restraint systems control unit (N2/7)

 SAM control unit (N10/10)

 Automated manual transmission control unit (N15/6)

 Heater/air conditioning operating unit (N23)
(for code (I01) Air conditioning Plus)

 ESP control unit (N47-5)

 Steering assist control unit (N68)
(with code (V26) Power steering, EPS (FFO))

-----------------------------------------------------------------------------------------

The following components are read in directly by the ME-SFI [ME] control unit:

 Knock sensor (A16)

 Tank pressure sensor (B4/3)

 Camshaft Hall sensor (B6/1)

 Coolant temperature sensor (B11/4)

 Intake manifold pressure sensor (B28)

 Accelerator pedal sensor (B37)

 Alternator (G2)

 O2 sensor downstream of TWC (G3/1)

 O2 sensor upstream of TWC (G3/2)

 Crankshaft position sensor (L5)

 Throttle valve actuator (M16/6)

 Oil pressure switch (S41/1)

 Fuel level sensor (M3/3b1)

-----------------------------------------------------------------------------------------

The following components are actuated directly by the ME-SFI [ME] control unit:

 Generator

 Heating O2 sensor downstream of TWC

 Heating O2 sensor upstream of TWC

 Secondary air injection pump relay (K64)

 Throttle valve actuator

 Cylinder 1 ignition coil (T1/1)

 Cylinder 2 ignition coil (T1/2)

 Cylinder 3 ignition coil (T1/3)

 Secondary air injection pump switchover valve (Y32)

 Adjustable camshaft timing solenoid (Y49)

 External air shut-off valve (Y50)

 Tank vent valve (Y58)

 Cylinder 1 fuel injection valve (Y62/1)

 Cylinder 2 fuel injection valve (Y62/2)

 Cylinder 3 fuel injection valve (Y62/3)