Alfa Romeo 147 Benutzeranleitung

IMPORTANT After eliminating the in-

convenience, to check the system com-
pletely, Alfa Romeo Authorised Services are
obliged to run a bench test and, if necessary,
road tests which may also call for a long jour-
ney. 

U does not turn on or if,

The EOBD system (European On Board Di-

agnosis) allows continuous diagnosis of the
components on the car correlated with emis-
sions; it also alerts the driver, by turning on
the warning light 

U(on some versions to-

gether with the message + symbol on the
reconfigurable multifunction display) on the
instrument panel when these components
are no longer in peak conditions.

The objective is:

– to keep the system efficiency under con-

trol;

– warn when a fault causes emission lev-

els to increase over the threshold established
by European law;

– warn of the need to replace deteriorat-

ed components.

The system also has a diagnostic connector

that can be interfaced with appropriate tools,
which makes it possible to read the error codes
stored in the control unit, together with a se-
ries of specific parameters for engine opera-
tion and diagnosis.

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