Self-diagnosis
The capability of the control unit:
to recognise faults,
to react to faults,
to store faults,
to register faults and make them available in the measured value block.
Performing self-diagnosis
Connecting the fault reader to be able to interrogate the fault memory.
Influencing the quantity injected
The engine torque is reduced during the gear shift process by changing the quantity injected. Further information
on this can be found in Self-study programme No. 172.
Performing electrical check
A targeted check of the electronic components by performing certain measurements.
Fuzzy logic
Monitors the actual driving situation. This item of software in the control unit replaces the previous programme
switch. Further information on this can be found in self-study programme no. 172.
Data bus
Transportation of data. To do this the electrical signals are brought into a certain format (bus). Further infor‐
mation on this can be found in Self-study programme No. 186.
Data bus low (high)
The voltage used to transport the data is low (high). Further information on this can be found in self-study
programme no. 186.
Gearbox speed sender -G38-
The sender records the speed of the large sun-wheel in the planetary gearbox and transmits it to the automatic
gearbox control unit. Further information on this can be found in Self-study programme No. 172.
Road speed sender -G68-
The sender records the speed of the output gear and transmits it to the automatic gearbox control unit (not to
the speedometer). Further information on this can be found in self-study programme no. 172.
Initiating basic setting
The values learnt in the control unit are turned back to the initial values. Further information on this can be
found in Self-study programme No. 172.
No communication
There is no connection for exchanging information between the control units.
Short to earth
Current flows -incorrectly- to earth without supplying a consumer.
Golf 1998 ➤
Automatic gearbox 01M self-diagnosis - Edition 10.1997
5.1 - Definitions
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