TOYOTA CAMRY 1999 Service Repair Manual

N21866
1 2
N21867
1 2
N21865
(a)
(b)
1 21
2
N21868
1 2
N21869
1 2 BE±80
± BODY ELECTRICALPOWER SEAT CONTROL SYSTEM
2300 Author: Date:
6. INSPECT SLIDE MOTOR PTC THERMISTOR OPERA-
TION
(a) Connect the positive (+) lead from the battery to terminal
1, the positive (+) lead from the ammeter to terminal 2 and
the negative (±) lead to the battery negative (±) terminal,
then move the seat cushion to the front position.
(b) Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 and the negative (±)
lead to terminal 1, check that the seat cushion begins to
move backwards.
If operation is not as specified, replace the seat adjuster.
7. INSPECT LIFTER MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 and the negative (±) lead to terminal 1, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
If operation is not as specified, replace the seat adjuster.
8. INSPECT LIFTER PTC THERMISTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1, the positive (+) lead from the ammeter to terminal 2 and
the negative (±) lead to the battery negative (±) terminal,
then move the seat cushion to the highest position.
(b) Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from the terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 and the negative (±)
lead to terminal 1, check that the seat cushion begins to
fall down.
If operation is not as specified, replace the seat adjuster.

N21865
(a)
(b)
1 21
2
N21870
1 2
N21871
1 2
± BODY ELECTRICALPOWER SEAT CONTROL SYSTEM
BE±81
2301 Author: Date:
9. INSPECT RECLINING MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 and the negative (±) lead to terminal 1, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
If operation is not as specified, replace the seat adjuster.
10. INSPECT RECLINING MOTOR PTC THERMISTOR OP-
ERATION
(a) Connect the positive (+) lead from the battery to terminal
2, the positive (+) lead from the ammeter to terminal 1 and
the negative (±) lead to the battery negative (±) terminal,
then recline the seat back to the most forward position.
(b) Continue to apply voltage, check that the current change
to less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from the terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 1 and the negative (±)
lead to terminal 2, check that the seat back starts to fall
backward.
If operation is not as specified, replace the seat adjuster.

BE0AV±03
Z19488
Mirror Control Switch
Instrument Panel J/B No.1

CIG Fuse
LH Mirror

Mirror MotorRH Mirror

Mirror Motor BE±82
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
2302 Author: Date:
POWER MIRROR CONTROL SYSTEM
LOCATION

BE0AW±03
Z16591
LR
MIRROR
OFF
LEFT SIDERIGHT SIDE
UP
OFF LEFT
RIGHT
DOWN
1 2 3
7 8 4
10 9 5
BE2357 h±10±2
6
N21184
TMMK made
(w/o Heater)
TMC made
(w/o Heater)TMMK made
(w/ Heater)1
2
2 332
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
BE±83
2303 Author: Date:
INSPECTION
1. Master switch left side:
INSPECT MIRROR CONTROL SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
OFF±No continuity
UP1 ± 9, 6 ± 10Continuity
DOWN1 ± 10, 6 ± 9Continuity
LEFT5 ± 9, 6 ± 10Continuity
RIGHT5 ± 10, 6 ± 9Continuity
If continuity is not as specified, replace the switch.
2. Master switch right side:
INSPECT MIRROR CONTROL SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
OFF±No continuity
UP6 ± 10, 7 ± 9Continuity
DOWN6 ± 9, 7 ± 10Continuity
LEFT6 ± 10, 8 ± 9Continuity
RIGHT6 ± 9, 8 ± 10Continuity
If continuity is not as specified, replace the switch.
3. INSPECT MIRROR MOTOR
(a) TMMK made (w/o Heater):
Connect the positive (+) lead from the battery to terminal
1 and negative (±) lead to terminal 2, check that the mirror
turns to left side.
(b) TMC made (w/o Heater):
Connect the positive (+) lead from the battery to terminal
3 and negative (±) lead to terminal 2, check that the mirror
turns to left side.
(c) TMMK made (w/ Heater):
Connect the positive (+) lead from the battery to terminal
3 and negative (±) lead to terminal 2, check that the mirror
turns to left side.

N21185
TMMK made
(w/o Heater)
TMC made
(w/o Heater)TMMK made
(w/ Heater)
N21186
TMMK made
(w/o Heater)
TMC made
(w/o Heater)TMMK made
(w/ Heater) BE±84
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
2304 Author: Date:
(d) Reverse the polarity and check that the mirror turns to
right side.
(e) TMMK made (w/o Heater):
Connect the positive (+) lead from the battery to terminal
3 and the negative (±) lead to terminal 2, check that the
mirror turns upward.
(f) TMC made (w/o Heater):
Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, check that the
mirror turns upward.
(g) TMMK made (w/ Heater):
Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, check that the
mirror turns upward.

N21187
TMMK made
(w/o Heater)
TMC made
(w/o Heater)TMMK made
(w/ Heater)
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
BE±85
2305 Author: Date:
(h) Reverse the polarity, check that the mirror turns down-
ward.
If operation is not as specified, replace the mirror assembly.

The radio wave bands used in radio broadcasting are as follows:
Frequency
Designation
Radio wave
Modulation method
LF: Low frequency MF: Medium Frequency HF: High Frequency VHF: Very High FrequencyAmplitude modulationFrequency modulation 30 kHz
300 kHz3 MHz 30 MHz 300 MHz
LF
MFHFVHF
AM FM
BE0AX±03
BE2818
FM (Stereo)
FM (Monaural)
AM
BE2819
Fading
Ionosphere BE±86
± BODY ELECTRICALAUDIO SYSTEM
2306 Author: Date:
AUDIO SYSTEM
DESCRIPTION
1. RADIO WAVE BAND
2. SERVICE AREA
There are great differences in the size of the service area for AM
and FM monaural. Sometimes FM stereo broadcasts cannot be
received even through AM comes in very clearly.
Not only does FM stereo have the smallest service area, but it
also picks up static and other types of interference (ºnoiseº)
easily.
3. RECEPTION PROBLEMS
Besides the problem of static, there are also the problems
called ºfadingº, ºmultipathº and ºfade outº. These problems are
caused not by electrical noise but by the nature of the radio
waves themselves.

Fading
Besides electrical interference, AM broadcasts are
also susceptible to other types of interference, es-
pecially at night. This is because AM radio waves
bounce off the ionosphere at night. These radio
waves then interfere with the signals from the same
transmitter that reach the vehicle's antenna directly.
This type of interference is called ºfadingº.

BE2820
Multipath
BE2821
Fade Out
AM
FMNoise occurs at a specific place.
Strong possibility of foreign noise.
Noise occurs when listening to
faint broadcasting.
Noise occurs only at night.
Noise occurs while driving and
at a specific place.There is a case that the same program is broadcasted
from each local station and that may be the case you are
listening to different station if the program is the same.
Strong possibility of the beat from a distant broadcasting.
Strong possibility of multipath noise and fading noise
caused by the changes of FM waves.
± BODY ELECTRICALAUDIO SYSTEM
BE±87
2307 Author: Date:

Multipath
One type of interference caused by bouncing of ra-
dio waves off obstructions is called ºmultipathº. Mul-
tipath occurs when a signal from the broadcast
transmitter antenna bounces off buildings and
mountains and interferes with the signal that is re-
ceived directly.

Fade Out
Because FM radio waves are of higher frequencies
than AM radio waves, they bounce off buildings,
mountains, and other obstructions. For this reason,
FM signals often seem to gradually disappear or
fade away as the vehicle goes behind a building or
other obstructions. This is called ºfade outº.
4. NOISE PROBLEMS
(a) Questionnaire for noise:
It is very important for noise troubleshooting to have good un-
derstanding of the claims from the customers, so that make the
best use of following quenstionnaire and diagnose the problem
accurately.
HINT:
In the case that the noise occurrence condition does not meet
any of the above quenstionnaire, check based on the ºTrouble
Phenomenonº.
Refer to previous page for multipath and fading.

N21545
NoiseGlass Printed Antenna
Signal
Radio
Noise
Noise
Noise
Noise
N21546
to Radio
Battery
Choke Coil
Noise
BE±88
± BODY ELECTRICALAUDIO SYSTEM
2308 Author: Date:
(b) Matlers that require attention when checking:

Noise coming into the radio usually has no harm for
practical use as the noise protection is taken and it
is hardly thinkable for an extremely loud noise to
come in. When extremely loud noise comes into the
radio, check if the grounding is normal where the
antenna is installed.

Check if all the regular noise prevention parts are
properly installed and if there is any installation of
non±authorized parts and non±authorized wiring.

If you leave the radio out of tune (not tuning), it is
easy to diagnose the phenomenon as noise occurs
frequently.
(c) Antenna and noise:
Electronic signal received by the antenna will reach to the
radio transmitting through the core wire of the coaxial
cable. Any noise wave other than radio wave is mixed into
this core wire, that naturally causes noise in the radio and
poor sound quality. In order to prevent these noises from
mixing into the radio, the core wire inside the coaxial cable
is covered with a mesh wire called shield wire. This shield
wire shelters the noise and transmits it to the ground, thus
preventing noise from mixing in. If this shield wire has
grounding failure, that causes noise.
(d) Choke coil and noise:
The choke coil is connected in the rear window defogger
circuit. This is conneted so to prevent noise from mixing
into the radio by making the noise current included in the
power source of the rear window defogger flow to the
ground.

I00399
Plug (Main)Antenna
Terminal
(Main)
Plug (Sub)Antenna
Terminal
(Sub) (1)
(3)(2)
(4)
I00402
I00403N21548
I00407
Ground point:
Antenna Cord
Center Brace
Pillar (RH)
Pillar (LH) Choke Coil
± BODY ELECTRICALAUDIO SYSTEM
BE±89
2309 Author: Date:
5. Glass printed 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-
tion.
Terminal connectionNormal condition
(1) e (2)Continuity
(3) e (4)Continuity