Checking Diodes; Dismantling - Fiat Brava Service Manual

Electrical equipment
Recharging
Bravo-Brava
55.
Checking diodes
Checking exciter diodes
1. Insert the probes of an ohmmeter as illus­
trated in the diagram.
IMOTE The readings at the three exciter
diode terminals should show infinite
resistance (the current does not
flow). Reversing the position of the
instrument probes should give the
diode resistance reading (the current
does flow).
Checking positive diodes
2. Turn the diode plate. Insert the probes of
an ohmmeter as illustrated in the diagram.
IMOTE The readings at the three positive
diode terminals should show infinite
resistance (the current does not
flow). Reversing the position of the
instrument probes will give the diode
resistance reading (the current does
flow).
Checking negative diodes
3. Insert the probes of an ohmmeter as illus­
trated in the diagram.
NOTE The readings at the three positive
diode terminals show show infinite
resistance (the current does not
flow). Reversing the position of the
instrument probes should give the
diode resistance value (the current
does flow).
Dismantling
4. Proceed as shown in the diagram in order,
to undo the nut fixing the pulley and then
remove the latter.
116 Print no. 506.670/01