Guide to diagnostics of electronic controls EWM10931
2011 SOE/DT-mdm FCPD-dp Quality-tb
46/75
599 73 77-37
E59: No signal from the tachometric generator
E59
The lack of signal should last at least 3 seconds
E59
Checks to perform:
Check/replace the wiring and repeat the diagnostic
cycle to check for any further alarms.
Replace the
motor or
tachometric
generator and
repeat the
diagnostic cycle
to check for any
further alarms.
Measure between the same
terminals of the wiring connector
(J2-3 and J2-4) and the
appliance body.
Is there any dispersion?
-(see fig.13)-
Check the
positioning of the
tachometric
generator.
Is it correct?
-(see fig.12)-
Replace the motor control board and repeat
the diagnostic cycle to check for any
further alarms.
Replace the
motor/generator
and repeat the
diagnostic cycle
to check for any
further alarms.
Check/replace the wiring and repeat
the diagnostic cycle to check for any
further alarms.
Measure between the
terminals of the wiring
connector J2-3 and J2-4,
(Point 4, phase “A”
page 41
).
Are the values (
Ω
) of the
tachometric generator
correct?
Detach the connector from the
motor and measure (
Ω
) the
tachometric generator coil,
(Point 4, phase “A”
page 41
)
-(see fig.11)-
Is the value correct?
Replace the motor and repeat the
diagnostic cycle to check for any
further alarms.
Detach the connector from the
motor and measure between the
terminals and the motor casing.
-(see fig.10)-
Is there any dispersion?
If there are burns on the circuit
board, see page 73
!
Check that all the connectors are correctly inserted
!
NO
Y
E
S
NO
NO
Y
E
S
Y
E
S
Y
E
S
NO
NO
Y
E
S