2000 TOYOTA CAMRY engine

80 CHASSISÐBRAKES
ABS & TRAC ECU
1) Wheel Speed Control
The ABS & TRAC ECU constantly receives signals from 4 speed sensors and calculates the speed of each wheel and
vehicle speed.
During sudden acceleration or driving on a slippery surface, if the drive wheels (front wheels) start to slip, the
difference in speed between the drive wheels are slipping.
Then, the ABS & TRAC ECU executes the right and left independent control of the front wheel brakes, the engine
torque control through fuel cutoff, and shift timing control according to the extent of the slip.
TRAC operation processes are described below.
1. The vehicle speed is determined by way of the rear wheel speed. This speed is then compared to the speed of the
front wheels, which are the drive wheels, to determine the slip condition of the drive wheels (front wheels).
2. The target control speed for the drive wheels is set based on the estimated vehicle speed.
3. If the speed of the front wheels, which are the drive wheels, exceeds the control starting speed, the ABS & TRAC
ECU determines that a slip has occurred and cuts off fuel according to the number of cylinders. By executing
engine torque control and brake control in this manner, the system regulates the speed
so that front wheels attain the target control speed. In addition, the system executes control to
prohibit the shifting of the automatic transaxle at this
time.
4. TRAC control ends when the drive wheels move to non±slippery surface or when the driver releases the
accelerator pedal.

81CHASSISÐBRAKES
2) Initial Check
An initial check is carried out once every a few seconds after the ignition was turned on. The functions of each
solenoid valve and pump motor in the actuator are checked on order.
3) Self±Diagnosis
If the ABS & TRAC ECU detects a malfunction in the engine, ABS or TRAC system, it blinks the TRAC OFF
indicator light to alert the driver of the malfunction. At the same, the ABS & TRAC 1997 Avalon Repair Manual
(Pub. No. RM504U) for the diagnostic code check method, diagnostic code and diagnostic code clearance.
4) Fail±Safe
In the event of a malfunction in the engine, ABS or TRAC system, the ABS & ECU prohibits the TRAC system.
Thus, the brake and engine controls will operate in the same conditions as those without the TRAC system.

86CHASSISÐSTEERING
STEERING
 DESCRIPTION
As in the previous model, a rack and pinion type steering gear is used. An engine revolution sensing type power
steering is used on all models.
As in the previous model, all models are provided with tilt steering.
An energy absorbing mechanism has been changed.

Specifications
Model
NewPrevious
Engine Type5S FE1MZ FE5S FE1MZ FEItem5S±FE1MZ±FE5S±FE1MZ±FE
Gear Ratio (Overall)17.4 : 1uuu
No. of Turns Lock to
Lock3.13.03.13.0
Rack Stroke mm (in.)149 (5.87)145 (5.71)149 (5.87)u145 (5.71)
Fluid TypeATF Type DEXRON
II or IIIuuu

96BODYÐLOW VIBRATION, LOW NOISE BODY
LOW VIBRATION, LOW NOISE BODY
Effective application of vibration damping and noide suppressant materials reduces engine and road noise.
 SOUND ABSORBING AND VIBRATION DAMPING MATERIALS
Sandwich panels are ussed in the dash panel, cowl panel, front floor panel and rear wheel housings.
Resin binding asphalt sheet and foamed asphalt sheet are optimally allocated to reduce engine and road noise for
quieter vehicle operation.
Foamed material is applied onto the roof panel and pillars to reduce wind noise.

Resin Binding Asphalt Sheet and Foamed Asphalt Sheet

Foamed Sponge Rubber

101 BODY ELECTRICALÐAIR CONDITIONING
AIR CONDITIONING
 DESCRIPTION
1. General
The air conditioning system in the new Camry has the following features:
The rotary switch and lever type heater control panel is used.
As in the previous model, an air conditioning unit that incorporates a blower, heater and cooler unit, has been
adopted.
The duct size of the blower unit has been enlarged.
An aluminum heater core has been adopted on all models.
The defroster nozzle inner wall is modified into a radial configuration for smoother air flow.
A defroster±linked air conditioning start up control, which automatically engages the air conditioning when the
defroster mode has been selected, is provided.
The air conditioning amplifier which is integrated with the ECM has been adopted on the 5S±FE engine model.

Performance
Model
NewPreviousItemNewPrevious
Heat Output W (Kcal/H)5580 (4800)u
HeaterAir Flow Volume* m3/h360u
Power Consumption W220u
Ai
Heat Output W (Kcal/H)5300 (4560)5350 (4600)
Air
ConditionerAir Flow Volume m3/h520530Conditioner
Power Consumption W260u
DefrosterAir Flow Volume* m3/h360u
*: With side vent closed.

Specifications
Model
NewPreviousItemNewPrevious
aterTypeDimpled Tube Typeu
and Hea
t
Heater CoreSize WxHxL mm (in.)160 x 220 x 32
(6.3 x 8.7 x 1.3)u
ion a
n
Fin Pitch mm (in.)1.8 (0.07)u
ntilati
o
Blower
Motor TypeA80Fs13TS80Fs12.5T
Ve n
tBlowerFan Size Dia. xH mm (in.)150 x 75 (5.9 x 3.0)u
Type3 Passage Flow Typeu
g
CondenserSize WxHxL mm (in.)415.6 x 726 x 22
(16.4 x 28.6 x 0.9)435.2 x 686 x 22
(17.1 x 27.0 x 0.9)
ingFin Pitch mm (in.)4.5 (0.18)3.5 (0.14)
ioni
n
TypeDrawn Cup Typeu
onditi
o
EvaporatorSize WxHxL mm (in.)260 x 252 x 90
(10.2 x 9.9 x 3.5)u
r C
oFin Pitch mm (in.)4.0 (0.16)u
Air CompressorType10PA17CuARefrigerandTypeHFC134a (R134a)u

104BODY ELECTRICALÐAIR CONDITIONING
3. Defroster Nozzle
The front defroster nozzle inner wall is modified into a radial configuration for a smoother air flow and improved
defroster performance.
4. Air Conditioning Amplifier
On the new Camry, the air conditioning amplifier that is provided on the 1MZ±FE engine model is an individual
amplifier unit type and on the 5S±FE engine model is a type that is integrated with the ECM.
The air conditioning amplifier controls the air conditioning system in accordance with the signals received from
sensors, switches, etc.
Function
Details
Magnetic Clutch Relay Control
When the blower switch and the air conditioning switch are turned on to-
gether, or when the air outlet mode is switched to defroster, the magnetic
clutch relay turns on and activates the compressor.
When one of the following conditions is met while the compressor is
turned on, the magnetic clutch relay is turned off and stops the compres-
sor:
i) The air temperature immediately after passing through the evaporator
is detected to be below 3C (37.4F) by the thermistor.
ii) The compressor speed detected by the lock sensor is compared with
the engine speed signal, and the compressor's slip rate exceeds a pre-
determined level (compressor locked).
iii) ªAir conditioner cutº was requested by the ECM to maintain engine
performance or idling speed.
Compressor Delay ControlWhen the air conditioning switch is turned on, the engagement of the mag-
netic clutch is delayed.
Air Conditioning Indicator Light
Control
When the blower switch and the air conditioning switch are turned on to-
gether, or when the air outlet mode is switched to defroster, and the com-
pressor is activated, the indicator lamp of the air conditioning switch is
turned on.
If compressure lock occurs during compressor operation, the indicator
lamp flashes every 1 second.

106BODY ELECTRICALÐACCESSORIES
SystemOutline
SRS Airbag
The SRS (Supplemental Restraint System) airbag is provided for the driver
and front passenger. The SRS airbag has been designed to lessen the shock to
the head and chest of the driver and front passenger in the event of a frontal
impact collision as a supplement to the seat belt.
A 1±sensor type airbag system is used in which the detection of decelera-
tion during a collision as well as control of the airbag system is accom-
plished by the airbag sensor assembly.
The basic construction and operation are the same as in the '96 Avalon.
However, the inflator for front passsenger and airbag sensor assembly have
been changed.
For details, see page 111.
Cruise Control System
Once it has been set at a desired vehicle speed, this system automatically
adjusts the engine throttle position to maintain the vehicle speed at the de-
sired speed without operating the acceleration pedal.
The basic construction and operation are the same as in the previous model.
However, in the new model, a new type acutator has been adopted. Also, the
functions of the cruise control ECU has been changed. For details, see page
116.
Moon Roof
The moon roof is a tilt±up and sliding type the same as in the previous mod-
el. This system includes ªkey±off operationº, which is the same as with the
power window system. The new model offers an additional ªone±touch slide
openº function which enables the moon roof to fully open when the slide
switch is pressed toward the opening side for a few seconds.
Electrical Remote Control Mirror
The electrical remote control mirrors used in the previous model are also
used in the new model. Also, the internal heater to remove water drops from
the mirror surface is provided.
Key Reminder System
When the driver's door is opened with the ignition key in the ACC or LOCK
position, this system sounds a buzzer to warn the driver that the ignition key
has not been removed.
The basic construction and operation are the same as in the previous model.

116BODY ELECTRICALÐACCESSORIES
 CRUISE CONTROL SYSTEM
1. General
Once the system is set to a desired vehicle speed, the engine throttle position is adjusted automatically to maintain
the vehicle speed at that speed without depressing the accelerator pedal.
The basic sonstruction and operation of this system are the same as the previous model. However, on the new model,
the control method for the manual and auto cancel functions have been changed. Also, a new motor type actuator
that is both lightweight and simple in construction has been adopted.
2. Construction and Operation
Actuator
The new Camry has adopted a new motor type actuator. The new motor type actuator consists of a motor, control link
and limit swit h, etc. as shown belwo.
The potentiometer hat measured the opening angle of the control link and transmitted the signals to the cruise control
ECU has been discontinued in the new actuator. The new actuator is equipped it with a compact motor. As a result,
the new actuator is made both lightweight and simple in construction.
Without the potentiometer, the new actuator contnuously regulates the opening angle of the control link.
This is made possible by the ECU, which compares the curent vehiclespeed input with the desired vehicle speed that
is stored in memory, and the result of that comparison is transmitted to the actuator.
Cruise Control ECU
1) Manual Cancel Fucntion
The manual cancel function has been changed as follows:
New
Previous
Transaxle shifted to positions other than ªDº.Transaxle shifted to ªNº position.
ÐPull up the parking brake lever.