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1. DEAD RADIO AND TAPE PLAYER
(a) No power to radio or tape player, or power but no sound.
Possible causes:
wBlown RADIO fuse
wShort circuit or broken wire in power source wire harness
,
wLoose connectors behind radio and tape player
wLoose speaker connector
wDefective speaker
wBroken wire in speaker wire harness
wImproperly installed radio or tape player
wDefective radio or tape player
Inspect and repair wire harness
for radio and tape player.Check for short circuit in
power source wire harness.
DESCRIPTION OF SYMBOLS
Replace radio and tape
player. Check RADIO fuse.
Proceed to Test 2.
Does not blow
Replace fuse.
Blows again TEST 1No short
Blown
Short
± BODY ELECTRICAL SYSTEMAudio SystermBE±95
Page 818 of 2389

(b) Tape player okay but not sound from either the FM or
AM band.
Possible causes:
wAntenna disconnected
wAntenna plug not properly connected
wDefective antenna
wDefective antenna cable
wDefective radio or tape player
wBlown DOME fuse
wShort circuit or broken wire in wire harness for
backup power source
Are all connectors behind radio and
tape player properly connected
Is there continuity in speaker
wire harness?Inspect and repair power wire
harness to radio and player.
Temporarily install another
speaker.Is there power to radio and
player connectors?
Inspect and repair speaker
wire harness.
IS radio electronic searchAre speaker connectors connected?Are radio and player
properly connected?
Proceed to Test 1 of
following item.Replace radio and
tape player.
Is either AM or FM okay? Connect properly.Properly reinstall. Connect properly.
Proceed to Test 3.Replace speaker. Proceed to Test 3.
Proceed to Test 2. w/o PlayerYe s TEST 2
TEST 3
TEST 1
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± BODY ELECTRICAL SYSTEMAudio SystemBE±96
Page 819 of 2389
HINT: Back±up power refers to the storage voltage for
preset tuning. This is applied even when the ignition
switch is OFF.
Is there back±up power to connectors
behind radio?
Inspect antenna and antenna cable,
and replace as necessary. Check for short circuit in back±up
power source wife harness.Inspect and repair back±up power
wire harness.
Inspect and repair wire harness
for back±up power source.
Temporarily install another
antenna. Okay?Check that antenna plug is
secure in radio.Inspect antenna plug.
Does radio alone work?Reinsert plug. Okay?
Replace tape player.Check DOME fuse.Proceed to Test 3.
Proceed to Test 4. Insert properly.
Replace radio.Replace fuse.
Replace radio. Blows again
TEST 3
TEST 4TEST 2
Blown
Loose Short
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± BODY ELECTRICAL SYSTEMAudio SystemBE±97
Page 820 of 2389
(c) No sound from one speaker.
Possible causes:
wLoose speaker connector
wBroken wire in speaker wire harness
wDefective speaker
wDefective radio and tape player
Pull out connector and
reinsert.
Check for continuity in speaker
wire harness. Temporarily install another
speaker. Okay?
Inspect and repair speaker
wire harness.Replace radio and tape player. !s the speaker connected?
Inspect connector.
Proceed to Test 2.
Replace speaker.
TEST 2TEST 1
Connect.
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± BODY ELECTRICAL SYSTEMAudio SystemBE±98
Page 821 of 2389
(Ex. Electronic Search Type)
HINT: Adjustment of the antenna trimmer.
(1) Fully lengthen the antenna.
(2) With the volume and tone at maximum, turn the dial
to around 1,400 kHz where there is no reception.
(3) Adjust the trimmer to where static is loudest. 2. FAINT RECEPTION
Possible causes:
wIncorrectly adjusted antenna trimmer
wDefective antenna or antenna cable
wDefective speaker
wDefective radio
Temporarily install another speaker.
Okay?
Temporarily install another antenna.
Okay?Inspect antenna, cable and booster
and repair as necessary. Are both reception and static faint
with antenna fully lengthened?
Adjust AM antenna trimmer.
(See illustration.)Replace speaker.
Replace radio.
Replace radio.
TEST
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± BODY ELECTRICAL SYSTEMAudio SystemBE±99
Page 822 of 2389

3. BAD SOUND QUALITY
(a) Sound quality bad when radio played.
Possible causes:
wMuItipath interference of excessive interception
wTuner dial not synchronized with station
wDefective antenna or antenna cable
wSpeaker improperly installed
wVibration sound from components near speaker
wDefective speaker
wDefective radio
(b) Sound quality bad when tape player played.
Possible causes:
wBad tape
wDirty head
wIncorrectly installed speaker
wVibration noise from around speaker
wDefective speaker
wDefective tape player HINT: FM distortion tends to increase sharply if the tun-
er is not synchronized.
FM multipath interference and excessively strong
AM reception near broadcasting station which
cannot be avoided in most cases.
Is there a vibration sound
corning from components
near speaker?Inspect antenna, cable and boost-
er, and repair as necessary.Is sound quality bad in
certain areas only?
Is speaker installed correctly
(not loose or too tight)?Temporarily install another
antenna. Okay?
Properly install. If speaker
frame is bent, replace. Is tuner dial properly synchronized?
Temporarily
install another
speaker. Okay? Properly synchronize.Proceed to Test 2.
Replace radio.Replace
speaker.
TEST 2TEST 1
Repair.
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± BODY ELECTRICAL SYSTEMAudio SystemBE±100
Page 823 of 2389

HINT: Head cleaning procedure.
(1) Raise the cassette door with your finger. Next, using
a pencil or like object, push in the guide as shown.
(2) Using a cleaning pen or cotton applicator soaked in
alcohol, clean the head surface, pinch rollers and
capstans.
(3) Push in the ºejectº button.
4. DEFECTIVE AUTO±SEARCH MECHANISM
Manual search possible but automatic search mechanism
does not function or does not stop at all receivable sta-
tions.
Possible causes:
wPoor search sensitivity (SENS button)
wDefective radio
Check if desired broadcast can
actually be received in the area.
If receivable, replace radio. Is desired broadcast receivable when
button is at ºDISTANTº position? Clean head. Does sound improve?
(See note for cleaning procedure.)Does sound improve with another
tape?
Is speaker correctly installed
(loose or too tight)?Does vibration sound
come from around
speaker?
Install correctly. If speaker
frame is bent, replace.Temporarily install
another speaker.
Okay?
Does needle move when
search button is pushed?Replace tape player. Proceed to Test 2.
Replace radio.Replace
speaker.
TEST
2
Tape bad TEST 1
Repair.
TEST
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± BODY ELECTRICAL SYSTEMAudio SystemBE±101
Page 824 of 2389

1. INSPECT RELAY OPERATION (ANTENNA UP)
(a) Connect the voltmeter positive (+) lead to terminal 1
and the negative (±) lead to terminal 4.
(b) Connect the positive (+) lead from the battery to terminals
6, 7 and 8. Connect the negative (±) lead to terminal 3.
(c) Check that there is battery voltage.
HINT: Measure the voltage within 7 seconds after con±
necting the positive (+) battery lead to terminals 8.
2. INSPECT RELAY OPERATION (ANTENNA DOWN)
(a) Connect the voltmeter positive (+) lead to terminal 4
and the negative (±) lead to terminal 1.
(b) Connect the positive (+) lead from the battery to terminals
6 and 7. Connect the negative (±) lead to terminal 2.
(e) Disconnect the positive (+) battery lead from terminal 6.
(d) Check that there is battery voltage.
HINT: Measure the voltage within 7 seconds after disconnect±
ing the positive (+) battery lead from terminal 6.
3. INSPECT RELAY OPERATION (ANTENNA STOP)
(a) Connect the voltmeter positive (+) lead to terminal 1
and the negative (±) lead to terminal 4.
(b) Connect the positive (+) lead from the ±battery to termi-
nals 7 and 9. Connect the negative (±) lead to terminal 2.
(c) Check that there is no battery voltage.
If operation is not as specified, replace the relay.
Antenna Motor
INSPECTION OF ANTENNA MOTOR
INSPECT LIMIT SWITCH OPERATION
(a) If the motor stops with the antenna up, check that
there is no continuity between terminals A±2 and
B±1.
(b) If the motor stops with the antenna down, check that
there is no continuity between terminals A±3 and
B±1.
If continuity is not as specified, replace the motor.
Antenna Motor Control Relay
INSPECTION OF ANTENNA MOTOR
CONTROL RELAY
± BODY ELECTRICAL SYSTEMAudio SystemBE±102