4.4.1.c Diagnostic information
Two types of diagnostic information are considered :
ON LINE diagnostics
This information is given during normal driving when something special happens.
In most applications, the LED 8 is used to indicate standstill. This helps to spot
problems with the speed sensor in an early stage before the lack of protection
resulting from the failure can produce damage to the drivetrain.
Which ON LINE diagnostic functions are provided is detailed in the application specific
EGS Functional Description.
OFF LINE diagnostics :
There are three selftest modes built into the EGS. Details about their function and
usage are described in chapter 7. Selftest functions.
4.4.2 Display layout
The EGS uses LED's (Light Emmitting Diodes) to give information to the driver.
It consists of eight multicolour LED's :
labelled '1' to '8' and can light up in RED, GREEN and YELLOW.
fig. 4.3 EGS top panel display
These numbered LED's are used for displaying both the shift lever selection and the transmission
They also used to indicate diagnostic information in the different test modes.
The RED LED is labelled 'N' and when this lights up it indicates that the transmission is placed in
neutral (this is possible even while the shift lever is not in neutral).
The YELLOW LED is labelled 'T' which stands for Trouble(Shooting). This LED is ON while working in
one of the three selftest modes described in chapter 7.
EGS user manual. Page 9 of 25
Document reference : egsman4.doc
Revision date: 07/04/97
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