|
General to self-diagnosis
Technical data of self-diagnosis
Control unit identification
The control unit version is displayed when the fault reader V.A.G 1551, the vehicle system tester V.A.G 1552 or the new tester VAS 5051 is connected and engine electronics control unit selected
.
Technical data
|
|
|---|
|
Engine code
|
AFK
|
AHW
|
|
System designation
|
|
MARELLI 4CV
|
MARELLI 4CV
|
|
Exhaust emissions fulfil
|
MVEG II
|
MVEG II
|
|
Self-diagnosis
|
|
yes
|
yes
|
|
Final control diagnosis
|
|
yes
|
yes
|
|
Operating mode of data transfer to V.A.G 1551/1552
|
Rapid data transfer
|
Rapid data transfer
|
|
Fault memory
|
|
Non-volat. mem.1)
|
Non-volat. mem.1)
|
|
Memory for learnt values
|
Volatile memory2)
|
Volatile memory2)
|
|
Lambda control
|
|
yes
|
yes
|
|
Knock control
|
|
1 knock sensor
|
1 knock sensor
|
|
Twin path intake manifold
|
|
no
|
no
|
|
Variable valve timing
|
no
|
no
|
|
Charge pressure control
|
no
|
no
|
|
Secondary air system
|
no
|
no
|
|
Exhaust gas recirculation
|
no
|
yes
|
1)
Independent of voltage supply.
2)
Values are erased when voltage supply is interrupted.
Selectable functions when using fault reader V.A.G 1551 or V.A.G 1552
Note:
The prerequisites for selecting the desired functions can be determined from the following table.
|
|
|---|
|
Function
|
Prerequisite
|
|
Functions on fault reader V.A.G 1551 or on system tester V.A.G 1552
|
Engine stopped, ignition switched on
|
Engine running at idling speed
|
Vehicle being driven
|
|
01
|
Interrogate control unit version
|
yes
|
yes
|
yes
|
|
02
|
Interrogate fault memory
|
yes1)
|
yes
|
yes
|
|
03
|
Final control diagnosis
|
yes
|
no
|
no
|
|
04
|
Basic setting2)
|
yes
|
no
|
no
|
|
05
|
Erase fault memory
|
yes
|
yes
|
yes
|
|
06
|
End output
|
yes
|
yes
|
yes
|
|
07
|
Code control unit
|
yes
|
no
|
no
|
|
08
|
Read measured value block
|
yes
|
yes
|
yes
|
1)
Only carry out with ignition switched on, when engine does not start.
2)
Must be carried out after the following: Replacing engine control unit, throttle valve control part, engine or disconnecting battery.
| 