Service manual

BODY ELECTRICAL
TROUBLE DIAGNOSES
AND
CORRECTIONS
Condition
Horn
does not
operate
Horn sound
continuously
Reduced volume and or
tone
quality
Probable
cause
Excessively
discharged battery
Blown
off
fuse
Improper
horn
button contact
Defective horn
relay
Defective horn
Defective
horn
relay
Short ircuited horn button
and horn
relay
terminal
S
Improper
fuse
wire contact
Broken
cable
Improper
horn button contact
BE
17
Corrective action
Measure
specific gravity
of
electrolyte
Charge
if
required
Check fuse
for
fusing
and
improper contact
Replace
or
repair
if
required
In
this case the horn
sounds
though
horn
relay
terminal S is
grounded
Check
and
repair
horn
button
Horn
sounds
though
the
horn
relay
termi
nals B
and
H
are short circuited
Replace
horn
relay
Horn
does not sound
though
horn
relay
terminals
B and
H
are
short circuited
and
horn
still
does not sound
though
battery
terminal
is connected to horn
terminal
directly
Replace
horn
Horn does
not
stop
though
horn
relay
S
terminal is disconnected
Replace
horn
relay
When
horn
stops
through
above discon
nection
check horn button unit
particu
larly carefully
Repair
horn
relay
terminal S
Replace
horn
button
Correct
Repair
or
replace
if
required
Repair