engine TOYOTA AVALON 2001 Service Repair Manual
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Page 1256 of 1897
DI01Q-10
THEFT DETERRENT SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date of VehicleRegistration No.
Registration Year
Frame No.
Odometer Reading / /km
Mile
Weather Conditions
When Problem
Occurred Frequency Problem OccursWeather
Outdoor temperature
/ /
Constant Sometimes ( Times per day, month)
Once only Brought in
Theft deterrent system cannot be set.
Indicator light does not flash when the theft deterrent system is set.
(It stays on or does not light at all.)
Theft deterrent system
does not operate. When unlocked using the
door lock knob.
When the engine hood is
opened.
System cannot be
canceled once set. When door is unlocked using key or wireless door lock control system.
When the key is inserted in the ignition key cylinder and turned to ACC or ON
position.
(However, only when the system has never operated)
When the luggage compartment door is opened with the key.
System cannot be
canceled during warning
operation. When door is unlocked using key or wireless door lock control system.
When the key is inserted in the ignition key cylinder and turned to ACC or ON
position.
Warning operation starts when the system is set and the door or luggage compartment door is opened with
the key.
Others.
Date Problem First Occurred
Fine Cloudy Rainy Snowy
Various/Others
Hot Warm Cool
Cold (Approx. 5F ( 5C))
Problem Symptom
Malfunction
Horns only
Theft deterrent horn only
Headlights only
Taillights only
Starter cut only
Door lock operation only
DI-518
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
674 Author: Date:
2001 AVALON (RM808U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 1258 of 1897
DI6L0-01
I11668
Door Lock Assembly
Door Lock Motor
Door Unlock Detection
SwitchLuggage Compartment
Door Key Lock and
Unlock Switch
Luggage Compartment Door Lock Motor
Luggage CompartmentDoor Courtesy Switch
Theft Deterrent Horn
Enjine Room Junction Block
HORN Fuse
HORN Relay
Headlight Control Relay
Door Lock Assembly
Door Lock Motor
Door Unlock Detection
Switch
Theft Deterrent ECU
Ignition Switch
Key Unlock Warning Switch
Driver Side Junction Block
DOME Fuse
ECU-IG No.1 Fuse
ECU-IG No.2 Fuse
Taillight Control Relay
Body ECU
Engine Hood Courtesy Switch
Security Indicator
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-529
685 Author: Date:
2001 AVALON (RM808U)
PARTS LOCATION
Page 1259 of 1897
DI4DL-03
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-519
675 Author: Date:
2001 AVALON (RM808U)
PRE-CHECK
1. THEFT DETERRENT SYSTEM
When the system is set to the theft deterrent mode and any of
the following conditions are met, the system sounds the horns
and flashes the headlights and the taillights for approx. 1 min-
ute.
At the same time the system locks all doors (If all door are not
locked at once, the system repeats door locking operation ev-
ery 6.38 seconds during the one minute alarm time).
There are 2 modes in this system, which are active mode and
passive mode.
All initial setting are performed in active mode. It can be
switched to passive mode by specified operation. (See step 4.
CHANGING METHOD OF PASSIVE MODE)
Condition:
Any of the doors (Including the engine hood and luggage
compartment door) is unlocked or opened without the
key. *1
The battery terminal is disconnected and reconnected.
The system receives panic signal from remote keyless
entry. *2
*1: Only active arming mode.
*2: When the ignition key is not inserted in the key cylinder.
There are 4 conditions in this system which are disarming
condition, disarming preparation condition, arming condition
and alarming condition.
(a) Disarming condition:
(1) When a user is near the vehicle.
(2) When the alarming function does not operate.
(3) When theft deterrent function is not performed.
(b) Disarming preparation condition:
(1) Time from a user locks a door to be leaves the ve-
hicle.
(2) Time until transferring to disarming condition.
(3) Theft deterrent function is not performed.
(c) Arming condition:
(1) When a user leaves the vehicle completely.
(2) When theft deterrent function is possible.
Page 1261 of 1897
Disarming condition
Any of the following conditions is met
When all doors and engine hood are closed, lock all the doors using a key.
When all doors and engine hood are closed, lock all the doors using wireless remote function.
When all doors and engine hood are closed, open and close either of doors and engine hood
then close and lock all doors and engine hood.
Disarming preparation condition
Any of the following conditions is met
30 seconds elapse when the engine hood
is closed and all doors are locked.
Any of the following conditions is met
Close and open either of all doors and
engine hood.
Lock and unlock either of doors.
Insert a key into the ignition key cylinder.
Reconnect the battery.
Arming condition
Any of the following conditions is met
Unlock the locked doors using the wireless
remote function.
Unlock the locked doors using the key.
Insert the key into the ignition key cylinder
and turn the ignition key ON.
Any of the following conditions is met
Either of closed doors opens.
Either of locked doors is unlocked by any
operation other than key or wireless remote
function.
The closed engine hood is opened.
The battery is reconnected.
Ignition switch turned to ON.
Alarming condition
Any of the following conditions is met
Unlock the locked doors using the wireless
remote function.
Unlock the locked doors using the key.
Insert the key into the ignition key cylinder
and turn the ignition key ON.
In this mode, once theft is detected, it is
informed using light and sound to people
around the vehicle.
The alarming time described above passes.
(Key not inserted in ignition cylinder.)
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-521
677 Author: Date:
2001 AVALON (RM808U)
2. ACTIVE ARMING MODE
Page 1263 of 1897
Perform any of the following and the system will go to Disarmed state (B):
Remove the key from the ignition, close the driver's door, then the ignition OFF.
Disarmed state (A)
Perform any of the following and the system
will return to Disarmed state (A):
Push the unlock switch on the wireless
remote.
Put the key in the lock on the driver's or the
passenger door and turn it towards unlock.
Put the key in the ignition.
Reconnect the battery.
Turn the ignition from OFF to ON.
Disarmed state (B)
Perform any of the following and the system
will go to Arming preparation:
Close all the doors, hood and
luggage compartment door.
Perform any of the following
and the system
will return to Disarmed state
(B):
Open any of the doors, the
hood or the
luggage compartment door.
Arming preparation
Perform any of the following
and the system
will go to Armed state:
Allow 30 seconds to elapse
with all the doors,
hood and luggage compart-
ment door closed.
Perform any of the following
and the system will return to
Disarmed state (A):
Push the unlock switch on
the wireless remote.
Put the key in the lock on
the driver's or the
passenger door and turn
it towards unlock.
Put the key in the
ignition and turn it ON.
Run the engine at 550 rpm
or faster for more than 10
seconds.
Armed state
Perform any of the following
and the system will go on to
Alarm sounding:
Open any of the doors and
allow the entry delay time
to pass.
Open the hood.
Open the luggage
compartment door with
something other than the
key or wireless remote.
Reconnect the battery.Perform any of the following
and the system will return to
Disarmed state (B):
Open the luggage
compartment door with the
wireless remote.
Open the luggage
compartment door with the
Key.
Perform any of the following and
the system
will return to Disarmed state (A):
Push the unlock switch on the
wireless
remote.
Put the key in the lock on the
driver's or the
passenger door and turn it to-
wards unlock.
Put the key in the ignition.
Reconnect the battery.
Turn the ignition from OFF to
ON.
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-523
679 Author: Date:
2001 AVALON (RM808U)
Page 1264 of 1897
Perform any of the following
and the system will return to
Armed state:
The alarm sounding
period passes.
Alarm sounding
Perform any of the following
and the system will return to
Disarmed state (A):
Push the unlock switch on
the wireless remote.
Put the key in the lock on
the driver's or the passenger
door and turn it towards
unlock.
Put the key in the ignition
and turn it ON.
Run the engine at 550 rpm
or faster for more than
10 seconds.Perform any of the following
and the system will return to
Disarmed state (B):
Open the luggage
compartment door with the
wireless remote.
Open the luggage
compartment door with the
Key.
DI-524
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
680 Author: Date:
2001 AVALON (RM808U)
Page 1267 of 1897
Remove the ignition key from key cylinder.
All the doors, engine hood and luggage
compartment door are closed and unlocked.
Any of doors is locked and unlocked by turns
3 times by the key or remote control.
Driver's side knob for door lock is locked and
unlocked 3 times.
Driver's side door is opened.
The system starts force lock at once after 2
sec.
Driver's side knob for door lock is unlocked.
Driver's side door is closed and opened 2
times
Driver's side knob for door lock is locked and
unlocked.
The system starts force lock at once after 2
secs.
PASSIVE MODE OFF
Driver's side door is closed and opened 3
to 5 times
Driver's side knob for door lock is locked and
unlocked.
The system starts force lock at once after 2
sec.
PASSIVE MODE ON
Within
30 sec.
Within
20 sec.
HINT:
Initial mode is PASSIVE MODE OFF.
If there is a different signal in the middle of changing. It is invalid.
*: Entry delay time
Input to the vehicle
Output from the vehicle
* 0 sec.4 times 5 times 3 times* 14 sec.
* 30 sec.
Within
2 sec. Within
2 sec.
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-527
683 Author: Date:
2001 AVALON (RM808U)
4. CHANGING METHOD OF PASSIVE MODE
(ON or OFF)
Page 1269 of 1897
DI01U-1 1
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-531
687 Author: Date:
2001 AVALON (RM808U)
PROBLEM SYMPTOMS TABLE
Proceed to the reference page shown in the matrix chart below for each malfunction symptom and trouble-
shoot for each circuit.
HINT:
Troubleshooting of the theft deterrent system is based on the premise that the door lock control system is
operating normally. Accordingly, before troubleshooting the theft deterrent system, first make certain that
the door lock control system is operating normally.
SymptomSuspect AreaSee page
The theft deterrent system cannot be set
1. Indicator light circuit
2. ECU power source circuit
3. Key unlock warning switch circuit
4. Luggage compartment door key lock and unlock switch
circuit
5. Engine hood courtesy switch circuitDI-532
DI-534
DI-542
DI-544
The indicator light does not blink when system is set.Indicator light circuitDI-532
When the system is set
(The system does not operate when the rear door is unlocked).Door unlock detection switch circuit
DI-686
DI-708
DI-643
When the system is set
(The system does not operate when the luggage compartment
door is opened by a method other than the key).
Luggage compartment door courtesy switch circuitDI-647
When the system is set
(The system does not operate when the engine hood is opened).Engine hood courtesy switch circuitDI-547
When the system is set
(It is not canceled when the ignition key is turned to ACC or ON
position (Except Europe Models)).
Ignition switch circuitDI-540
When the system is set
(It still operates when the luggage compartment door is opened
with the key (Except Europe Models)).Luggage compartment door key lock and unlock switch
circuitDI-544
While the system is in warning operation
(Horns do not sound).Horn relay circuitDI-672
While the system is in warning operation
(Headlights do not flash).Headlight control relay circuitDI-635
While the system is in warning operation
(Taillights do not flash).Taillight control relay circuitDI-633
While the system is in warning operation
(The door lock is not locked).Door unlock detection switch circuit
DI-686
DI-708
DI-643
System is still set even when a rear door is openDoor courtesy switch circuitDI-639
Even when the system is not set
(Horns sound).Horn relay circuitDI-672
Even when the system is not set
(Headlights stay on).Headlight control relay circuitDI-635
Even when the system is not set
(Taillights stay on).Taillight control relay circuitDI-633
Page 1270 of 1897
DI1AH-13
I11580
T4
DI-530
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
686 Author: Date:
2001 AVALON (RM808U)
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSTD Value
DSWH e EBWB
Engine hood courtesy switch ºONº
(Engine hood opened)Below 1 WDSWH e E
(T4-6 e T4-12)B e W-BEngine hood courtesy switch ºOFFº
(Engine hood closed)1 MW or higher
KSW e ERYWB
Key unlock warning switch ºONº
(Key inserted)Below 1 WKSW e E
(T4-4 e T4-12)R-Y e W-BKey unlock warning switch ºOFFº
(Key removed)1 MW or higher
LGU e E GWWBLuggage compartment door key lock and unlock switch ºONºBelow 1 WLGU e E
(T4-3 e T4-12)G-W eW-BLuggage compartment door key lock and unlock switch ºOFFº1 MW or higher
+B1 e Body ground
(T4-2 eBody ground)W-G eW-BAlways10 - 14 V
IG e E
(T4-14 e T4-12)Y-R e W-BIgnition switch is turned to ºONº position10 - 14 V
+B2 e Body ground
(T4-1 e Body ground)L-R e Body
groundAlways10 - 14 V
IND e E
(T4-12 e T4-12)V-W eW-BDuring set preparation3 - 5 V
E e Body ground
(T4-12 e Body ground)W-B e Body
groundAlways10 - 14 V
SH e SH-
(T4-24 e T4-25)B-R e WAlways10 - 14 V
MPX1 e Body ground
(T4-10 e Body ground)V e Body groundMultiplex communication circuit-
Page 1271 of 1897
EC01H-03
- EMISSION CONTROLEMISSION CONTROL SYSTEM
EC-1
1095 Author: Date:
2001 AVALON (RM808U)
EMISSION CONTROL SYSTEM
PURPOSE
The emission control systems are installed to reduce the amount of CO, HC and NOx exhausted from the
engine ((3) (4) and (5)), to prevent the atmospheric release of blow-by gas-containing HC (1) and evapo-
rated fuel containing HC being released from the fuel tank (2).
The function of each system is shown in these table.
SystemAbbreviationFunction
(1) Positive Crankcase Ventilation
(2) Evaporative Emission Control
(3) Warm Up Three-Way Catalytic Converter
(4) Three-Way Catalytic Converter
(5) Sequential Multiport Fuel injection*PCV
EVAP
WU-TWC
TWC
SFIReduces HC
Reduces evaporated HC
Reduces HC, CO and NOx
Reduces HC, CO and NOx
Injects a precisely timed, optimum amount of fuel for reduced
exhaust emissions
Remark: * For inspection and repair of the SFI system, refer to the SF section of this manual.