2001 TOYOTA AVALON Service Repair Manual

Door
Indicator
Alarming output
System condition
Arming condition Alarming
condition Entry delay time Close
Open
ON
OFF
ON
OFF
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-525
681 Author
: Date
:
2001 AVALON (RM808U)
HINT:
In arming condition either closed door is opened, entry delay
occurs. (14 secs.)
During this time, the mode transfers to disarming condition
when the condition described above * is met.
When the condition is not met, the system judges theft occurs,
the mode transfers to alarming condition.
Indicator light output:
ConditionIndicator light
Disarming conditionOFF
Arming preparation conditionON
Arming condition
(Entry delay time)OFF
(ON)
Alarming conditionON
HINT:
Even in disarming condition, the indicator light flash. (Due to the
signal output form immobilizer system). The indicator always
flashes receiving the signal from the immobilizer system at any
time in the arming condition.
Flashing frequency:
0.2 seconds (ON)
1.8 seconds (OFF)

DI-526
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
682 Author
: Date
:
2001 AVALON (RM808U)
Transfer to active mode:
In each passive mode, when ºdisarming condition of ac-
tive mode " arming preparation transfer conditionº is
met, the active mode transfers to each condition. In this
case, active mode continues till disarming condition.
Passive mode when transfer condition is
met.Active mode transfer condition
Disarming conditionArming preparation condition
Arming preparation conditionArming preparation condition
Arming condition
(During entry delay time)Arming condition
(After alarming time has elapsed, arming
condition)
Alarming conditionAfter alarming time has elapsed, arming
condition

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)

N09348
ECUHand-held tester
Break-out-box
DI-528
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
684 Author
: Date
:
2001 AVALON (RM808U)
5. ECU TERMINAL VALUES MEASUREMENT BY USING
BREAK-OUT-BOX AND HAND-HELD TESTER
(a) Hook up the break-out-box and hand-held tester to the
vehicle.
(b) Read the ECU input/ output values by following the
prompts on the tester screen.
HINT:
Hand-held tester has a ºSnapshotº function.
This records the measured values and is effective in the diagno-
sis of intermittent problems.
Please refer to the hand-held tester / break-out-box opera-
tor 's manual for further details.

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

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-

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.

EC0BF-02
B08627
Vapor Pressure Sensor
ConnectorVapor Pressure SensorEVAP Line Hose
Vent Line Hose
Air Inlet Line Hose
Purge Line Hose
Air Drain Hose
39.2 (400, 29)
N´m (kgf´cm, ft´lbf) : Specified torqueCharcoal Canister
Charcoal Canister
VSV for Pressure Switching Valve
Fuel Hose
VSV Connector for Pressure
Switching Valve
- EMISSION CONTROLEVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
EC-5
1099 Author
: Date
:
2001 AVALON (RM808U)
EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
COMPONENTS