Fiat 1996 Brava Service Manual page 787

Electrical equipment
Service control unit
Bravo- Brava
98 range
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A13 B16
B2 B3
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B1
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- 6-second when the door is reclosed to allow
the driver to enter the car and turn the ignition
key on;
- 6 seconds when the door is reclosed to allow
the driver to enter the car and insert the igni­
tion key. The timer locks when the ignition is
turned on;
- 6 seconds when the ignition key is taken out;
- 3 minutes to prevent the battery charging if
the door is accidentally left open.
NOTE When any of the doors is opened, the
timer begins again from zero.
T I M E D OPERATION OF THE HEATED REAR
W I N D O W (and door mirrors)
The control unit operates the heated rear window
(and the door mirrors demister coils) on a timer
as follows:
- key turned ON;
- an activation signal is received from the switch
on the facia;
- an activation signal is received from the air
conditioner (MAX DEF)
The power supply ceases if:
- the key is turned to STOP or taken out
- a deactivation signal is received from the
switch on the facia;
- a MAX DEF function deactivation signal is re­
ceived.
If one of these two signals is not received, the timer keeps the coils activated for 20 MINUTES, but a spe­
cific system is applied:
- the power supply stays on AT ALL TIMES for the first 10 MINUTES;
- During the SUBSEQUENT TEN MINUTES, the power is cut off if battery voltage drops below 11.6 V
(and is restored if voltage rises to more than 13V).
Once the first 20 minutes of operation have elapsed, the heated rear window relay control working cycle is
2 minutes active and 2 minutes deactive until the heated rear window control switch is turned off. During
the active stage, battery voltage affects operation as described previously. When the rear window remains
active, the warning light is turned on.
NOTE A command from the facia switch always takes priority over the MAX DEF function, i.e. if the rear
window is turned on using the MAX DEF command and the facia switch is pressed, the heated
rear window will go off.
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Publication no. 506.670/20