4.4 Display function
The EGS has an internal bicolour LED display for displaying the selected shiftlever position, the
selected shiftlever direction, the transmission position and the transmission direction.
Application specific details are described in a separate document : EGS Functional Description. This
EGS functional description can be requested for each EGS unit. This description overrules the below
description wherever applicable.
4.4.1 Displayed information
Typically four types of information about the EGS and the transmission can be of interest to the driver :
selected shiftlever position and transmission position
selected shiftlever direction and transmission direction
application specific information
4.4.1.a Selected position and direction
The difference between shift lever position and transmission position might not be immediately
clear, but when one remembers that the EGS can protect the transmission (example : by not
allowing a downshift), it becomes clear that the REQUESTED position (the shift lever position)
can be different from the ACTUAL ENGAGED position (the position of the transmission).
Both shift lever position and transmission position can be divided in two subcategorises :
DRIVING DIRECTION (forward, neutral, reverse)
4.4.1.b Application specific information
This can be anything (whatever the customer wants to see).
As an example :
on an EGS automatically controlling the lockup clutch, it's interesting to see
whether or not the converter is in lockup. This can be indicated on the EGS
display by using the LED 7 - yellow.
EGS user manual. Page 8 of 25
Document reference : egsman4.doc
Revision date: 07/04/97
Ten Briele 3, 8200 Brugge, Belgium