Fiat X 1/9 1978 - Fuse L Blows Repeatedly

ELECTRICAL
SYSTEM
TROUBLESHOOTING
FUSES
FUSE
L BLOWS
REPEATEDLY
La.
if
fuse
blows
when
engine
is
running
hot,
go
to
step
2.
If
fuse
blows
when
horn
is
used,
go
to
step
3.
b.
Disconnect
one
purple
wire.
Connect
red
meter
lead
to
wire.
Connect
black
lead
to
ground.
c.
If
meter
does
not
read
infinity,
go
to
step
d.
If
meter
reads
infinity,
disconnect
other
purple
wire.
Connect
red
meter
lead
to
it.
d.
Disconnect
purple
wire
from
terminal
30/51
of
fan
relay.
If
meter
reads
infinity,
replace
relay.
e.
If
meter
does
not
read
infinity,
disconnect
purple
wire
from
terminal
1
of
horn
relay.
f.
If
meter
reads
infinity,
replace
relay.
If
meter
does
not
read
infinity,
repair
purple
wire
to
fan
relay
or
purple
wire
to
horn
relay.
2.3.
Disconnect
light
blue
wire
from
terminal
87
of
fan
relay.
Connect
red
meter
lead
to
light
blue
wires.
Connect
black
lead
to
ground.
b.
If
meter
reads
3
ohms
or
more,
replace
relay.
If
meter
reads
less
than
3
ohms,
disconnect
connector
C21.
NOTE
Connector
C21
is a
2 pin
connector.
It is
above
the
fan
motor.
c.
If
meter
reads
infinity,
check
wire
to
fan
motor.
lf
wire
is
good,
replace
motor.
(I.
If
meter
does
not
read
infinity,
repair
light
blue
wire
to
connector
C21.
3.a.
Disconnect
light
blue
wires
from
terminal
4
of
horn
relay.
Connect
red
meter
lead
to
wires.
Connect
black
lead
to
ground.
b.
II
meter
reads
3
ohms
or
more,
replace
relay.
If
meter
reads
less
than
3
ohms,
disconnect
wire
from
right
horn.
c.
If
meter
reads
7
ohms
or
more,
replace
horn.
lf
meter
reads
less
than
7
ohms,
disconnect
wire
from
left
horn.
d.
If
meter
reads
infinity,
replace
horn.
If
meter
does
not
read
infinity,
repair
wires
to
horns.
Page
355
PURPLE
WIRE
\
RED
LEAD
BLACK
\%
LEAP.,fi“—"—‘
nnI-i
flnflfl
lnnnn
on
_.__L_._\_
FUSE
L
TO
GROUND—
COOLING
FAN
RELAY
TERMINAL
30/51
-'
BLACK
LEAD
FAN
RELAY
r
I;
\\
l‘
.
l
\_
\x
I
wine
§
\.
BLACK
LEAD
\I\\
“
TO
GROUND
\
.
REDI
LEAD