Warning Light Of The Fiat Code System; First Key Memorization; Key Memorization With Unused System - Fiat Brava Service Manual

Bravo-Brava Electrical system
Fiat CODE
55.
Warning light of the Fiat CODE system
The CODE warning light is managed by the Fiat CODE control unit. The CODE warning light consists of
a lamp on the instrument panel. When the ignition is switched on (+15), the warning light can indicate
one of the following conditions:
- ON briefly (0.7s) and then OFF: key recognized, correct operation of the system;
- FLASHING: both the engine control unit and the Fiat CODE control unit do not have any code memo­
rized (unused system); for a description of the various flashing modes, refer to the "Manual Diagno­
sis" sub-section.
- ON: if the warning light comes on permanently when the ignition is ON (+15), this indicates one of
the following faults:
a. key not recognized by the Fiat CODE control unit (engine management prohibited);
b. serial line not connected or the engine control unit and Fiat CODE control unit have not succeeded
in establishing communication;
c. key rememorization procedure not carried out correctly.
If the CODE warning light comes on temporarily or permanently during driving or starting of
the car, this does not necessarily mean a fault in the system but, in certain cases, this indicates a
condition that may be interpreted as a tampering attempt by a thief.
If this happens, to carry out a proper test on the system, stop the car, switch off the engine and
switch the ignition off (STOP position). Turn the ignition on again: the CODE warning light
should come on and go out again after about 1 second.
If the CODE warning light stays on after this procedure, repeat the operation, waiting with the
ignition off (STOP position) for more than 30 seconds. If the Code warning light stays perma­
nently on when the ignition is on even after this attempt, conduct a diagnosis on the Fiat CODE
system. \
KEY M E M O R I Z A T I O N
First key memorization
The first key memorization is carried out in the factory.
To check that memorization has been effected, insert a key in the ignition switch and turn the ignition
ON (+15):
- if the CODE warning light goes out, memorization has been effected;
- if after about 2.5 seconds the CODE warning light starts flashing again at a higher frequency, the sys­
tem is still unused.
The condition of unused Fiat CODE control unit can also be checked by the Fiat Lancia Tester during di­
agnosis of the engine control unit.
Key memorization with unused system
An unused system means the simultaneous presence on the car of an engine control unit and a Fiat
CODE control unit which have NO memorized code (for example following an intervention which has
required the replacement of both control units).
Before starting this procedure, make sure that the Fiat CODE control unit is really unused. The
use of a Fiat CODE control unit which is faulty or already memorized involves the irreversible
memorization of an incorrect code in the engine control unit which will then be unusable in the
future on other cars.
Copyright Fiat Auto 63