2000 TOYOTA CAMRY ECU

CAMRY ± NEW FEATURES
150NF122
Pressure BulkheadPropellant Grain
Gas
Initiator
CAUTION
The initiator is ignited even by a feeble current. As it is dangerous, never measure the resistance of the
initiator with a volt / ohmmeter, etc.
150NF123
Pressure Bulkhead
Propellant GrainInitiator
Gas
: Propagation of Fire
: Flow of Gas
20
Inflator and Bag
1) Construction
The inflator and bag are integrated inside the case and located in the outer side of the seat back. The infla-
tor is comprised of a initiator, propellant grain, gas and pressure bulkhead.
The bag is made of strong nylon cloth and becomes inflated by the gas heated by the inflator.
2) Operation
When the side airbag sensor detects the acceleration because of a side collision, the ECU appraises the
extent of the acceleration to determine whether or not the side airbag must be deployed.
After the ECU determines that the side airbag must be delpoyed, it causes the initiator to ignite in order
to head and expand the gas inside the inflator. The expanded gas tears thhe pressure bulkhead and flows
into the bag.
The bag, which is inflated by the gas, pushes open the case in the seat, tears the sewn portion of the seat
outer cover, and expands to the side of the occupant.
The expanded bag receives the occupant's arm and chest, and discharges the gas through the bag's surface
in order to soften the rcoil.
Thus, the side airbag helps to reduce the impact energy that is applied to the occupant's arm and chest
areas.

CAMRY ± NEW FEATURES
150NF118
BatteryIgnition Switch
EFI
Relay
Transponder
Key Coil
Transponder
Key AmplifierECMBody
ECU
DLC1
150NF119
Transponder Chip
24
3. Wiring Diagram
4. Construction
The engine immobiliser system consists of the transponder key (ignition key), transponder key coil, trans-
ponder key amplifier, and ECM.
Transponder Key (Ignition Key)
A transponder chip is embedded in the grip of the
ignition key. Each transponder chip contains an
individual transponder key-code (ID code). The
key does not need an internal battery to transmit
a key code.
Transponder Key Coil and Transponder Key Amplifier
The transponder key coil is a ring-shaped coil installed around the ignition key cylinder. The transponder
key amplifier is installed in the back of the key cylinder.
An electrical power circuit to provide power to the transponder key coil has been enclosed in the amplifier.
ECM
The control circuit of the engine immobiliser system has been integrated inside the ECM. As a result, the
time has been reduced taken for the engine to start in case of mismatching key code thus improving the
system's theft deterrent performance.
A maximum of 10 different transponder key codes (master key: 7 types, sub key: 3 types) can be registered
in the ECM.

CAMRY ± NEW FEATURES 26
6. Functions
The engine immobiliser system provides the following functions:
Immobiliser Cancel Function
The immobiliser system is cancelled when the following condition is met, thus permitting authorized opera-
tion of the engine:
The ignition key has been inserted in the key cylinder (after the ECM reads the key code of the transpond-
er chip and that code matches the pre-registered key code).
New Transponder Key Code Registration Function
This function allows the registration of the key code of two master keys and a sub key to the new ECM. This
function is used if the ECM is replaced with a new one.
Additional Transponder Key Code Registration Function
This function enables the registration of the key code for a new master key or sub key, while retaining the
key codes that are already registered. This function is used for the purpose of adding a new master or sub
key. A maximum of 10 different transponder key codes (7 for master keys and 3 for sub keys) can be regis-
tered in the ECM.
Transponder Key Code Delete Function
This function deletes all the transponder key codes that are registered in the ECM except for the key code
of the master key that was used to execute the delete function.
For further details on transponder key code registration, addition, and deletion, see the 1998 Camry Repair
Manual (Pub. No. RM589U).
Appendix

'99camry U
14
ÐWireless remote control
Locking operation
Unlocking operation
Your vehicle has a wireless remote
control system that can lock or unlock
all the doors, or activate the theft
deterrent system from a distance within
approximately 1 m (3 ft.) of the vehicle.
LOCKING AND UNLOCKING THE
DOORS
To lock and unlock all the doors, push
the switches of the transmitter slowly
and securely.
To lock: Push the ºLOCKº switch. All the
doors are locked simultaneously. At this
time, parking lights, side marker lights and
tail lights flash.
Check to see that the doors are securely
locked.
If any of the doors is not securely closed,
or if the key is in the ignition switch,
locking cannot be performed by the
ºLOCKº switch.
To unlock: Push the ºUNLOCKº switch
once to unlock the driver 's door alone.
Pushing the switch twice within 3 seconds
unlocks all the doors simultaneously. At
this time, parking lights, side marker lights
and tail lights flash twice.You have 30 seconds to open a door after
using the wireless remote unlock feature.
If a door is not opened by then, all the
doors will be automatically locked again.
If the ºLOCKº or ºUNLOCKº switch is kept
pressed in, the locking or unlocking opera-
tion is not repeated. Release the button
and then push again.

'99camry U
16
1. Using a coin or equivalent, open the
transmitter case.2. Remove the discharged transmitter bat-
teries.
NOTICE
Do not bend the terminals.
3. Put new transmitter batteries with neg-
ative (±) side up.
Close the transmitter case securely.
NOTICE
Make sure the positive side and
negative side of the transmitter bat-
teries should be faced correctly.
Be careful not to bend the electrode
of the transmitter batteries insertion
and that dust or oils do not adhere
to the transmitter case.
Close the transmitter case securely.

'99camry U
19
Trunk lidÐ
To open the trunk lid from the outside,
insert the master key and turn it clock-
wise.
See ºLuggage stowage precautionsº in
Part 2 for precautions to observe for load-
ing luggage.
To close the trunk lid, lower it and press
down on it. After closing the trunk lid, try
pulling it up to make sure it is securely
closed.
CAUTION
Keep the trunk lid closed while driv-
ing. This not only keeps the luggage
from being thrown out but also pre-
vents exhaust gases from entering
the vehicle.
ÐLock release lever
To open the trunk lid from the driver's
seat, pull up on the lock release lever.

'99camry U
20
ÐLuggage security system
This system deactivates the lock re-
lease lever so that things locked in the
trunk can be protected.
1. Push down the security lock levers
to lock the rear seatbacks.
On vehicles with built±in child restraint,
only the left seatback has a lock lever
and can be lowered. The right seatback
cannot be folded down.
After locking the rear seatbacks, try fold-
ing them down to make sure they are
securely locked, otherwise someone could
get into the trunk by folding down a rear
seat.2. After closing the trunk lid, insert the
master key and turn it counterclock-
wise to deactivate the lock release
lever.
After closing the trunk lid, try pulling it up
to make sure it is securely locked.
Hood
To open the hood:
1. Pull the hood lock release lever. The
hood will spring up slightly.
CAUTION
Before driving, be sure that the hood
is closed and securely locked. Other-
wise, the hood may open unexpected-
ly while driving and an accident may
occur.

'99camry U
21
2. In front of the vehicle, pull up the
auxiliary catch lever and lift the
hood.3. Hold the hood open by inserting the
support rod into the slot.
Before closing the hood, check to see that
you have not forgotten any tools, rags,
etc. and return the support rod to its
clip
this prevents rattles. Then lower the
hood make sure it locks into place. If
necessary, press down gently on the front
edge to lock it.
CAUTION
After inserting the support rod into
the slot, make sure the rod supports
the hood securely from falling down
on to your head or body.
Theft deterrent system
To deter the vehicle theft, The system
is designed to give an alarm if any of
the doors, trunk or hood is forcibly un-
locked or the battery terminal is discon-
nected and then reconnected when the
vehicle is locked.
The alarm blows the horn intermittently
and flashes the headlights and tail lights.