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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 .
Equipment
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Engine code
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BAH
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System name
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Motronic ME7.5.10
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Electronic throttle system (E-gas)
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Yes
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Self-diagnosis
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Yes
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Final control diagnosis
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Yes
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Type of data transfer to V.A.G 1551/1552
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Fast data
transfer
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Fault memory
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Permanent
memory 1)
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Memory for learned values
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Impermanent 2)
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Lambda control
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1 Probe
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Knock control
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1 Knock sensor
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Intake manifold change-over
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No
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Camshaft timing control
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No
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Charge pressure control
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No
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Secondary air system
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No
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1) Independent of voltage supply.
2) Values are erased when voltage supply is interrupted.
Selectable functions when using fault readers V.A.G 1551 or V.A.G 1552
The prerequisites to select the desired functions can be found in the following table.
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Function
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Prerequisite
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Functions on V.A.G 1551/1552 or on
VAS 5051
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Engine stationary, ignition switched on
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Engine running at idling speed
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Vehicle being driven
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01
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Interrogate control unit version
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yes
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yes
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yes
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02
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Interrogate fault memory
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yes1)
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yes
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yes
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03
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Final control diagnosis
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yes
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no
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no
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04
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Basic setting2)
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yes
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yes
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yes
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05
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Erase fault memory
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yes
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yes
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yes
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06
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End output
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yes
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yes
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yes
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07
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Code control unit
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no
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no
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no
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08
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Read measured value block
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yes
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yes
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yes
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10
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Adaption
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no
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no
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no
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1) Only carry out with ignition switched on, when engine does not start (operate starter for at least 6 seconds first).
2) Must be carried out after the following: Replacing engine control unit, throttle valve control part, engine or disconnecting battery.
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