Toyota Celica Supra 1986 Service And Repair Manual page 651

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BODY
ELECTRICAL
SYSTEM - Radio, Stereo Tape Player and Antenna
BE·1D3
TEST
1
h radio
etecttonie
$eateh
Yes
type?
No
r
Proceed to
Test 3
.
TEST2
Check HAZ·HORN fuse
OK
Blown
(
Replace
fuse.
OK
910\vs
ag~in
Check
for short
circuit
in
back·uP
power source wire
harness.
ShO<t
(
lnwect and repair wire harness
)
fat
back·up
POWer
source.
{b) Tape player
okay
but
no
sound from AM and FM
or
either
one.
Possible causes:
Antenna disconnected
Antenna plug
not
properly
connected
Defective antenna
Defective antenna booster
o
Defective antenna cable
Defective radio or tape player
Blown HAZ·HORN
fuse
Short circuit
or
broken wire in wire harness for
back-up power source
h either
AM
or
FM
okay?
Yes
Proceed to Ten 2.
No
Is there back-up
power to
connectors
Yes
Proceed
to
Test
3.
behind
radio?
No
No
lns~t
and
r
tl)air
back·uP
powe-r
)
wire
hamess.
01--f
OK
I
OK
Replace radio.
)
NOTE:
Back·up power refers
to
the
storage voltage
for
preset
tuning.
This
is
applied even when the
ignition
switch
is
OFF.

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