Glas TOYOTA CAMRY 1999 Service Repair Manual

AC0LI±02
N20242
Sight Glass
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC±3
2485 Author: Date:
ON±VEHICLE INSPECTION
1. INSPECT REFRIGERANT VOLUME
Observe the sight glass on the liquid tube.
Test conditions:

Running engine at 1,500 rpm

Blower speed control switch at ºHIº position

A/C switch ON

Temperature control dial at ºCOOLº position

Fully open the doors
ItemSymptomAmount of refrigerantRemedy
1Bubbles present in sight glassInsufficient*
(1) Check for gas leakage with gas leak de-
tector and repair if necessary
(2) Add refrigerant until bubbles disappear
2No bubbles present in sight glassNone, sufficient or too muchRefer item 3 and 4
3No temperature difference between com-
pressor inlet and outletEmpty or nearly empty
(1) Check for gas leakage with gas leak de-
tector and repair if necessary
(2) Add refrigerant until bubbles disappear
4Temperature between compressor inlet and
outlet is noticeably differentCorrect or too muchRefer to items 5 and 6
5Immediately after air conditioning is turned
off, refrigerant in sight glass stays clearToo much
(1) Discharge refrigerant
(2) Evacuate air and charge proper amount
or purified refrigerant
6When air conditioning is turned off, refriger-
ant foams and then stays clearCorrect±
*: Bubbles in the sight glass with ambient temperatures higher than usual can be considered normal if cooling
is sufficient.

I01387
Condition : Periodically cools and then fails to cool
I01388
Condition: Insufficient cooling
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC±5
2487 Author: Date:
(2) Moisture present in refrigeration system.
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy
During operation, pressure on low
pressure side sometimes become
a vacuum and sometime normal
Moisture entered in refrigeration
system freezes at expansion valve
orifice and temporarily stops cycle,
but normal state is restored after a
time when the ice melts
Drier oversaturated state

Moisture in refrigeration system
freezes at expansion valve orifice
and blocks circulation of refriger-
ant(1) Replace receiver
(2) Remove moisture in cycle
through repeatedly evacuating air
(3) Charge proper amount of new
refrigerant
(3) Insufficient cooling
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure low on both low and
high pressure sides

Bubbles seen in sight glass con-
tinuously

Insufficient cooling performance
Gas leakage at some place in re-
frigeration system
Insufficient refrigerant in system

Refrigerant leaking
(1) Check for gas leakage with gas
leak detector and repair if neces-
sary
(2) Charge proper amount of re-
frigerant
(3) If indicated pressure value is
near 0 when connected to gauge,
create the vacuum after inspecting
and repairing the location of the
leak

I01390
Condition: Insufficient cooling
I01392
Condition: Insufficient cooling
NOTE : These gauge indica-
tions are shown when the
refrigeration system has
been opened and the refrig-
erant charged without vacu-
um purging.
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC±7
2489 Author: Date:
(6) Refrigerant overcharged or insufficient cooling of
condenser
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure too high on both low
and high pressure sides

No air bubbles seen through the
sight glass even when the engine
rpm is lowered
Unable to develop sufficient per-
formance due to excessive refrig-
eration system

Insufficient cooling of condenser
Excessive refrigerant in
cycle " refrigerant over charged

Condenser cooling " condenser
fins clogged of condenser fan
faulty
(1) Clean condenser
(2) Check condenser fan motor
operation
(3) If (1) and (2) are in normal
state, check amount of refrigerant
Charge proper amount of refriger-
ant
(7) Air present in refrigeration system
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure too high on both low
and high pressure sides

The low pressure piping hot to
touch

Bubbles seen in sight glass
Air entered in refrigeration system

Air present in refrigeration sys-
tem

Insufficient vacuum purging
(1) Check compressor oil to see if
it is dirty or insufficient
(2) Evacuate air and charge new
refrigerant

N13790
Low Pressure
Service Valve
High Pressure
Service Valve
I07055
Properly
Charged
Insufficiently
Charged AC±12
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
2494 Author: Date:
3. CHARGE REFRIGERANT INTO REFRIGERANT SYS-
TEM
If there is no leak after refrigerant leak check, charge the proper
amount of refrigerant into refrigeration system.
CAUTION:

Never run the engine when charging the system
through the high pressure side.

Do not open the low pressure hand valve when the
system is being charged with liquid refrigerant.
(a) Open the high pressure hand valve fully.
(b) Charge specified amount of refrigerant, then close the
high pressure hand valve.
HINT:
A fully charged system is indicated by the sight glass being free
of any bubbles.
(c) Charge partially refrigeration system with refrigerant.
(1) Set vehicle in these conditions:

Running engine at 1,500 rpm

Blower speed control set at ºHIº

Temperature control set at ºMAX. COOLº

Air inlet control set at ºRECIRCº

Fully open doors (Sliding roof: closed)
(2) Open the low pressure hand valve.
CAUTION:
Do not open the high pressure hand valve.
(d) Charge refrigerant until bubbles disappear and check the
pressure on the gauge through the sight glass.

BE09Y±01
± BODY ELECTRICALBODY ELECTRICAL SYSTEM
BE±1
2221 Author: Date:
BODY ELECTRICAL SYSTEM
PRECAUTION
Take care to observe the following precautions when performing inspections or removal and replacement
of body electrical related parts.
1. HEADLIGHT SYSTEM

Halogen bulbs have pressurized gas inside and require special handling. They can burst if scratched
or dropped. Hold a bulb only by its plastic or metal case. Don't touch the glass part of a bulb with bare
hands.
2. SRS (SUPPLEMENTAL RESTRAINT SYSTEM)

The CAMRY is equipped with an SRS (Supplemental Restraint System) such as the driver airbag and
front passenger airbag. Failure to carry out service operation in the correct sequence could cause the
SRS to unexpectedly deploy during servicing, possibly leading to a serious accident. Before servicing
(including removal or installation of parts, inspection or replacement), be sure to read the precaution-
ary notices in the RS section.
3. AUDIO SYSTEM

If the negative (±) terminal cable is disconnected from the battery, the preset AM, FM 1 and FM 2 sta-
tions stored in memory are erased, so make sure to note the stations and reset them after the negative
(±) terminal cable is reconnected to the battery.

If the negative (±) terminal cable is disconnected from the battery, the ºANTI±THEFT SYSTEMº will
operate when the cable is reconnected, but the radio, tape player and CD player will not operate. Be
sure to input the correct ID number so that the radio, tape player and CD player can be operated again.
4. MOBILE COMMUNICATION SYSTEM

If the vehicle is equipped with a mobile communication system, refer to precautions in the IN section.

BE±8
± BODY ELECTRICALBODY ELECTRICAL SYSTEM
2228 Author: Date:
Shift indicator lights do not light up.
1. Bulb
2. Meter Circuit Plate
3. Park/Neutral Position Switch (A140E)
(A541E)
4. Wire Harness±
BE±46
DI±424
DI±479
±
Only one shift indicator does not light up.1. Bulb
2. Meter Circuit Plate±
BE±46
Malfunction indicator light does not light up.
1. Bulb
2. ECM
3. Meter Circuit Plate
4. Wire Harness±
±
BE±46
±
SLIP indicator light does not light up.
1. Bulb
2. Traction ECU
3. Meter Circuit Plate
4. Wire Harness±
±
BE±46
±
TRAC OFF indicator light does not light up.
1. Bulb
2. Traction ECU
3. Meter Circuit Plate
4. Wire Harness±
±
BE±46
±
Security indicator light does not light up.
1. Bulb
2. Security ECU
3. Meter Circuit Plate
4. Wire Harness±
±
BE±46
±
Indicator lights do not light up. (Except Turn, Hi±beam and
security)1. GAUGE Fuse (I/P J/B No.1)
2. Wire Harness±
±
DEFOGGER SYSTEM
SymptomSuspect AreaSee page
All defogger systems do not operate.
1. DEFOG M±Fuse (I/P J/B No.1)
2. HTR Fuse (I/P J/B No.1)
3. Defogger Relay (I/P J/B No.1)
4. Defogger Switch
5. Wire Harness±
±
BE±56
BE±56
±
Rear window defogger does not operate.
1. Defogger Wire
2. Choke Coil
3. Wire HarnessBE±56
±
±
Mirror defogger does not operate.
1. MIR/HTR Fuse (I/P J/B No.1)
2. Mirror Defogger
3. Wire Harness±
BE±56
±
POWER WINDOW CONTROL SYSTEM
SymptomSuspect AreaSee page
Power window does not operate (ALL).
(Power Door Lock does not operate)1. POWER M±Fuse (I/P J/B No.1)
2. Power Main Relay (I/P J/B No.1)
3. Wire Harness±
BE±60
±
Power window does not operate (ALL).
(Power Door Lock is normal)1. Ignition Switch
2. Power Window Master Switch
3. Wire HarnessBE±14
BE±60
±
ºOne Touch Power Window Systemº does not operate.1. Power Window Master SwitchBE±60
Only one window glass does not move.
1. Power Window Master Switch
2. Power Window Switch
3. Power Window Motor
4. Wire HarnessBE±60
BE±60
BE±60
±
ºWindow Lock Systemº does not operate.1. Power Window Master SwitchBE±60

N21371
6
4
BE4029
Tester Probe
Tin FoilHeat Wire
BE0123
At Center
BE0124
0 VoltSeveral
Volts
Broken
Wire
± BODY ELECTRICALDEFOGGER SYSTEM
BE±57
2277 Author: Date:
5. w/ Heater:
INSPECT MIRROR DEFOGGER
(a) Connect the positive (+) lead from the battery to terminal
4 and the negative (±) lead to terminal 6.
(b) Check that the mirror becomes warm.
HINT:
It takes short time for the mirror to become warm.
6. INSPECT DEFOGGER WIRE
NOTICE:

When cleaning the glass, use a soft, dry cloth, and
wipe the glass in the direction of the wire. Take care
not to damage the wires.

Do not use detergents or glass cleaners with abrasive
ingredients.

When measuring voltage, wind a piece of tin foil
around the top of the negative probe and press the foil
against the wire with your finger, as shown.
(a) Turn the ignition switch ON.
(b) Turn the defogger switch ON.
(c) Inspect the voltage at the center of each heat wire, as
shown.
VoltageCriteria
Approx. 5VOkay (No break in wire)
Approx.10V or 0VBroken wire
HINT:
If there is approximately 10 V, the wire is broken between the
center of the wire and the positive (+) end. If there is no voltage,
the wire is broken between the center of the wire and ground.
(d) Place the voltmeter positive (+) lead against the defogger
positive (+) terminal.
(e) Place the voltmeter negative (±) lead with the foil strip
against the heat wire at the positive (+) terminal end and
slide it toward the negative (±) terminal end.
(f) The point where the voltmeter deflects from zero to sever-
al V is the place where the heat wire is broken.
HINT:
If the heat wire is not broken, the voltmeter indicates 0 V at the
positive (+) end of the heat wire but gradually increases to about
12 V as the meter probe is moved to the other end.

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

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: