TOYOTA CAMRY 1999 Service Repair Manual

I00400
PlugAntenna
Terminal
(1) (2)
I00427
I00428
I00429I00408
Ground point:
Antenna Cord
Center Brace Luggage Room (RH side)
Pillar (LH) Noise Filter BE±90
± BODY ELECTRICALAUDIO SYSTEM
2310 Author: Date:
6. Fixed mast antenna:
GROUNDING FOR THE ANTENNA CORD AND CHOKE
COIL
HINT:
During troubleshooting, in case that the antenna code continu-
ity check, grounding check and grounding check of the choke
coil are needed, please check refering to the following illustra-
tions.
Terminal connectionNormal condition
(1) e (2)Continuity

BE0AY±05
± BODY ELECTRICALAUDIO SYSTEM
BE±91
2311 Author: Date:
TROUBLESHOOTING
NOTICE:
When replacing the internal mechanism (computer part) of the audio system, be careful that no part
of your body or clothing comes in contact with the terminals of the leads from the IC, etc. of the re-
placement part (spare part).
HINT:
This inspection procedure is a simple troubleshooting which should be carried out on the vehicle during sys-
tem operation and was prepared on the assumption of system component troubles (except for the wires and
connectors, etc.).
Always inspect the trouble taking the following items into consideration.
Open or short circuit of the wire harness
Connector or terminal connection fault
ProblemNo.
RadioRadio not operating when power switch turned 'ON'.1
Display indicates when power switch turned 'ON', but no sound (including 'noise')
is produced.2
Noise present, but AM ± FM not operating.3
Any speaker does not work.4
Either AM or FM does not work, reception poor (volume faint), Fewer station pre-
sets.5
Poor reception.6
Sound quality poor.7
Preset memory disappears.8
Tape PlayerCassette tape cannot be inserted.9
Cassette tape is inserted, but no power.10
Power coming in, but tape player not operating.11
Either speaker does not work.12
Sound quality poor. (volume faint)13
Tape jammed, malfunction with tape speed or auto±reverse.14
Cassette tape will not be ejected.15
CD PlayerCD cannot be inserted.16
CD inserted, but no power.17
Power coming in, but CD player not operating.18
Sound jumps.19
Sound quality poor (Volume faint).20
Either speaker does not work.21
CD will not be ejected.22
NoiseNoise occurs.23
Noise produced by vibration or shock while driving.24
Noise produced when engine starts.25
The term ºAMº includes LW, MW and SW, and the term ºFMº includes UKW.

1 Radio RADIO NOT OPERATING WHEN POWER SWITCH TURNED 'ON'
Does tape or CD player operate normally? Radio assembly faulty.
Check that RAD No.1 fuse is OK?
Is ACC applied to radio?
Check that RAD No.2 fuse is OK?
Is +B applied to radio?
Check that GND (wire harness side) to radio is OK?Replace fuse.
ACC wire harness faulty.
Replace fuse.
+B wire harness faulty.
GND faulty.
Radio assembly faulty.No
OK
Ye s
OK
Ye s
OKYe s
NG
No
NG
No
NG

Radio±Tape Plater Unit (Built±in Power Amplifier)
Radio±CD Plater Unit (Built±in Power Amplifier) BE±92
± BODY ELECTRICALAUDIO SYSTEM
2312 Author: Date:

I03349

Radio±Tape Player Unit (Separate Power Amplifier)

Radio±Tape Player±CD Player Unit (Separate Power Amplifier)
Does tape or CD player operate normally?
Check that RAD No.1 fuse is OK?
Is ACC applied to power amplifier?
Check that RAD No.2 fuse is OK?
Is +B applied to power amplifier?
Check that GND (wire harness side) to power amplifier is OK?
Is ACC applied to radio assembly?
Is +B applied to radio assembly?
Check that GND (wire harness side) to radio assembly is OK?
Radio assembly faulty.Radio assembly faulty.
Replace fuse.
ACC wire harness faulty.
Replace fuse.
+B wire harness faulty.
GND faulty.
Power amplifier or wire harness faulty.
Power amplifier or wire harness faulty.
GND faulty. No
OK
Ye s
OK
Ye s
OK
Ye s
Ye s
OKYe s
NG
No
NG
No
NG
No
No
NG
Radio±CD Player Unit (Separate Power Amplifier)
± BODY ELECTRICALAUDIO SYSTEM
BE±93
2313 Author: Date:

I03350
2RadioDISPLAY INDICATES WHEN POWER SWITCH TURNED
'ON', BUT NO SOUND (INCLUDING 'NOISE') IS PRODUCED

Radio±Tape Player Unit (Built±in Power Amplifier)
Does tape or CD player operate normally?
Check that RAD No.1 fuse is OK?
Is ACC applied to radio?
Check that RAD No.2 fuse is OK?
Is +B applied to radio?
Check that GND (wire harness side) to radio is OK?
Does continuity exist in speaker wire harness?
Temporarily install another speaker.
Radio faulty.Radio faulty.
Replace fuse.
ACC wire harness faulty.
Replace fuse.
+B wire harness faulty.
GND faulty.
Speaker wire harness faulty.
Speaker faulty. No
OK
Ye sNG
NoNo
No
No OK
OK Ye s
Ye sYe s
Ye s NG
NG
Radio±CD Player Unit (Built±in Power Amplifier) BE±94
± BODY ELECTRICALAUDIO SYSTEM
2314 Author: Date:

V08239

Radio±Tape Player Unit (Separate Power Amplifier)

Radio±Tape Player±CD Player Unit (Separate Power Amplifier)
Does tape player operate normally?
Check that RAD No.1 fuse is OK?
Is ACC applied to power amplifier.
Check that RAD No.2 fuse is OK?
Is +B applied to power amplifier.
Check that GND (wire harness side) to power amplifier is OK?
Is ACC applied to radio assembly?
Is +B applied to radio assembly?
Check that GND (wire harness side) to radio assembly is OK?
Does continuity exist in speaker wire harness?
Temporarily install another speaker. Functions OK?
Hiss noise from speaker?
Radio assembly faulty. Recheck system after repair.Replace fuse.
ACC wire harness faulty.
Replace fuse.
+B wire harness faulty.
GND faulty.
Power amplifier faulty.
Power amplifier faulty.
GND faulty.
Speaker wire harness faulty.
Speaker faulty.
Power amplifier faulty.
Recheck system after repair. No
OK
Ye sNG
No
No No No No No No
OK
OK
OK Ye s
Ye s
Ye s
Ye s
Ye sYe s NG
NG
NG
Radio±CD Player Unit (Separate Power Amplifier)
± BODY ELECTRICALAUDIO SYSTEM
BE±95
2315 Author: Date:

I03351
3
Radio NOISE PRESENT, BUT AM±FM NOT OPERATING
ANY SPEAKER DOSE NOT WORK Radio 4
Does tape player operate normally?Radio assembly faulty.
Separate amplifier? Hiss noise from speaker? Power amplifier faulty.
Radio assembly faulty.

Radio±Tape Player Unit (Built±in Power Amplifier)
Is hiss noise produced by non±functioning speaker?
Temporarily install another speaker. Functions OK?
Radio assembly faulty.Radio assembly faulty.
Radio assembly faulty.
Speaker wire harness faulty.
Speaker faulty. NoYe s
Ye s
Ye s
Ye sYe s
Ye s
Ye s NoNo
No
No
NoNo Does tape or CD player operate normally?
Does continuity exist in speaker wire harness?
Radio±CD Player Unit (Built±in Power Amplifier)

Radio±Tape Player Unit (Separate Power Amplifier)

Radio±Tape Player±CD Player Unit (Separate Power Amplifier)
Does tape player operate normally?
Is hiss noise produced by non±functioning speaker?
Does continuity exist in speaker wire harness?
Temporarily install another speaker. Functions OK?
Power amplifier faulty. Recheck system after repair.Radio assembly faulty.
Radio assembly
Recheck system after repair.
Speaker wire harness faulty.
Speaker faulty. NoYe s
No
NoNo Ye s
Ye s
Ye s
Radio±CD Player Unit (Separate Power Amplifier) BE±96
± BODY ELECTRICALAUDIO SYSTEM
2316 Author: Date:

I03352
5
RadioEITHER AM OR FM DOES NOT WORK, RECEPTION
POOR (VOLUME FAINT), FEWER STATION PRESETS
V08242

Radio±Tape Player Unit (Built±in Power Amplifier)
Problem with radio wave signals or location?
Are both AM or FM defective?
Is power for the antenna being output from the radio assembly?
Go to No.15
Does tape player operate normally?
Temporarily install another speaker. Functions OK?
Radio assembly faulty.Poor signals, poor location.
Radio assembly faulty.
Radio assembly faulty.
Speaker faulty.

Radio±Tape Player Unit (Separate Power Amplifier)

Radio±Tape Player±CD Player Unit (Separate Power Amplifier)
Problem with radio wave signals or location?
Are both AM and FM defective?
Is power for the antenna being output from the radio assembly?
Go to No.15
Temporarily install another speaker. Functions OK?
Hiss noise from speaker?Poor signals, poor location.
Radio assembly faulty.
Radio assembly faulty.
Speaker faulty.
Power amplifier faulty.
Recheck system after repair.
Radio assembly faulty. Recheck system after repair.Ye s NoYe s Ye s Ye s Ye sYe s Ye s Ye s Ye s Ye sYe s
No
No No No No No NoNo No No
Does tape player operate normally?
Radio±CD Player Unit (Built±in Power Amplifier)

Radio±CD Player Unit (Separate Power Amplifier)
± BODY ELECTRICALAUDIO SYSTEM
BE±97
2317 Author: Date:

I01472
Is the condition bad in comparison with other vehicle?
6 Radio POOR RECEPTION
An electric wave environment.
Is there any additional installation parts? (Sun shade film,
telephone antenna etc.).Does the condition get better if removing them? Ye s
No
Ye s
No
Check if there is any scratch and breaking in a
wire on the glass antenna and the defogger pattern.
(See page
BE±115)Influence of additional installation parts. No
Repair Ye s
No
No
Is the contact of the plug jack of the radio OK?
Check for contact.
Ye s
No
Does the condition get better by using the outer
antenna? (Such as pillar antenna)Check the radio.
Ye s
No
Ye s
No Is the contact of the antenna terminal on the glass
surface and the defogger terminal?Measure for contact.
Is the continuity of the antenna cord OK? Exchange the antenna cord.
Check the grounding of the antenna, antenna cord,
choke coil and noise filter.Ye s
NG
Grounding failure.
OK
Does the condition get better by exchanging the choke
coil?Exchange the choke coil. Ye s
No
Ye s
Does the condition get better by exchanging the
antenna cord?Exchange the antenna cord.
Exchange the glass.NoYe s
BE±98
± BODY ELECTRICALAUDIO SYSTEM
2318 Author: Date:

I03353
7Radio
SOUND QUALITY POOR

Radio±Tape Player Unit (Built±in Power Amplifier)
Is sound quality always bad?Is sound quality bad in
certain area only.Poor signals,
poor location.
Radio assembly faulty.
Does tape player operate normally?Radio assembly
faulty.
Is speaker properly installed?
Temporarily install another speaker. Functions OK?Installed properly.
Speaker faulty.
Radio assembly faulty.No
No
No
No
No Ye sYe s
Ye s
Ye s Ye s
Radio±CD Player Unit (Built±in Power Amplifier)

Radio±Tape Player Unit (Separate Power Amplifier)

Radio±Tape Player±CD Player Unit (Separate Power amplifier)
Is sound quality always bad?Is sound quality bad only in
certain areas?Poor signals, poor
location.
Does tape player operate normally?
Radio assembly faulty. Radio assembly or power
amplifier faulty.
Radio assembly faulty.
Is speaker properly installed?
Temporarily install another speaker. Functions OK?
Radio assembly or power amplifier faulty.
Recheck system after repair.Installe properly.
Speaker faulty. No Yes
No
No
No
No
NoYe s
Ye s
Ye s
Ye s Ye s Does tape player operate normally?
Radio±Tape CD Unit (Separate Power Amplifier)
± BODY ELECTRICALAUDIO SYSTEM
BE±99
2319 Author: Date: