Fiat 1996 Brava Service Manual page 343

Bravo- Brava 9 **
99 range
Engine
Fuel system
10.
Checking the resistance
The resistance of the solenoid valve can be
measured by disconnecting the connector and
connecting an ohmmeter as illustrated in the
diagram.
Resistance: 17.5-23.5 ohm at 20 °C
Wiring connector
The numbers indicate the corresponding con­
trol unit pins
CHECKS - ADJUSTMENTS A N D REPAIR OPERATIONS ON THE BOSCH M O T R O N I C M E 3.1
INJECTION/IGNITION SYSTEM IN ADDITION TO THE FAULT DIAGNOSIS
WHEN WORKING ON A VEHICLE EQUIPPED WITH A MOTRONIC INJECTION/IGNITION
SYSTEM, OBSERVE THE FOLLOWING PRECAUTIONS:
- do not start up the engine with the terminals for the electrical connections not properly con­
nected or slack at the battery poles;
- do not use a rapid battery charger to start the engine;
- never disconnect the battery from the on board system with the engine running;
- when recharging the battery, disconnect it first from the system;
- if the vehicle goes into a drying oven after painting, at temperatures in excess of 80 °C, then the
injection/ignition electronic control unit must be removed first;
- never connect or disconnect the electronic control unit multiple connector with the ignition
switch in the ON position;
- a/ways disconnect the negative battery lead before carrying out electrical we/ding on the vehi­
cle.
It should be remembered that this system has a memory which is a/ways supplied (stand-by
memory) which contains all the self-adjustment figures. If the battery is disconnected then this
information is lost and can only be acquired again after a certain length of time so this operation
should be carried out as infrequently as possible.
If the engine control unit or the motorized butterfly casing is being replaced, the self-learning procedure
must be carried out for the return spring inside the butterfly casing and maximum/minimum motorized
butterfly valve angular positions.
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