Page 1806 of 1943

DI7T9±01
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±67
2001 PRIUS (RM778U)
PRE±CHECK
1. OUT LINE OF THEFT DETERRENT SYSTEM
When the theft deterrent system detects any theft, it informs
people around with flashing lights and sound.
This system is designed to be upgraded by featuring an option-
al glass break sensor.
All initial setting are performed in active mode. It can be
switched to passive mode by specified operation. (See step 3.
CHANGING METHOD OF PASSIVE MODE)
HINT:
There are 4 conditions in this system which are disarmed state,
arming preparation, armed state and alarm sounding.
(1) Disarmed state
When the alarming function does not oper-
ate.
When theft deterrent function is not per-
formed.
(2) Arming preparation
Time until transferring to armed state.
Theft deterrent function is not performed.
(3) Armed state
When theft deterrent function is possible.
(4) Alarm sounding:
In this condition, once theft is detected, it is in-
formed using light and sound to people around the
vehicle.
Refer to the table for alarming method or time.
Horn
Security horn
Al i th dHeadlightAlarming methodTaillight
Hazard
Interior light
Alarming time60 seconds
Alarming outputContinuous 0.4 secs. (ON)
0.4 secs. (OFF)
HINT:
Alarming output for hazard is same as the one for the hazard
on the vehicle.
In the arming condition when either of doors is unlocked with
key not in the key cylinder, force lock signal is output.
Page 1807 of 1943

Disarmed state
Perform any of the following and the system will go no to ºArming preparationº:
With all the doors, engine hood and luggage compartment door closed, lock all doors with the key.
With all the doors, engine hood and luggage compartment door closed, lock all doors with the
wireless remote.
With all the doors, engine hood and luggage compartment door closed, open and close any of doors,
engine hood or luggage compartment door, then close and lock all doors, engine hood and luggage
compartment door.
Arming preparation
Perform the following and the system will
go on to ºArmed stateº:
Let 30 seconds elapse with all the doors,
engine hood and luggage compartment door
closed and locked.
Perform any of the following and the system
will return to ºDisarmed stateº:
Open any of the doors, engine hood or luggage
compartment door.
Unlock any of the doors.
Put the key in the ignition.
Reconnect the battery.
Armed state
Perform any of the following and the system
will return to ºDisarmed stateº:
Unlock any of the doors or open the luggage
compartment door with the wireless remote.
Unlock the doors with the wireless remote.
Put the key in the ignition and turn it to ON.
Perform any of the following and the system
will go on to ºAlarm soundingº:
Open any of the doors.
Unlock any of the doors in any way other than
with a key or the wireless remote.
Open the luggage compartment door in any way
other than with a key.
Open the engine hood.
Reconnect the battery.
When input from optional glass break sensor is
detected (Dealer option)(Key not inserted in ignition.)
Alarm sounding
The vehicle's horn and security horn will sound,
and the hazard, interior, tail and head lights flash
for 60 seconds.
After the alarm has ended, the system will
return to ºArmed stateº. Perform any of the following and the system
will return to ºDisarmed stateº:
Unlock any of the doors or open the luggage
compartment door with the wireless remote.
Unlock the doors with the wireless remote.
Put the key in the ignition and turn it to ON.
BE±68
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
2001 PRIUS (RM778U)
2. ACTIVE ARMING MODE
Page 1808 of 1943
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±69
2001 PRIUS (RM778U)
Indicator light output:
ConditionIndicator light
Disarmed stateOFF
Arming preparationON
Armed stateOFF
Alarm soundingON
HINT:
Even in disarmed state, the indicator light flash. (Due to the sig-
nal output form immobilizer system). The indicator always
flashes receiving the signal from the immobilizer system at any
time in the armed state.
Flashing frequency:
0.2 seconds (ON)
1.8 seconds (OFF)
Answer back:
The hazard lights flush as answer back under the following
conditions.
(1) When the system is set.
When arming preparation is set from disarmed state
using the wireless door lock, the hazard lights flush
once.
(2) When the system is released.
When disarmed state is set from either arming prep-
aration, armed state or alarm sounding using the
wireless door lock, the hazard lights flush twice.
Page 1812 of 1943

± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±73
2001 PRIUS (RM778U)
Indicator light output:
ConditionIndicator light
Disarmed stateOFF
Arming preparationON
Armed state
(Entry delay time)OFF
(ON)
Alarm soundingON
HINT:
Even in disarmed state, the indicator light flash. (Due to the sig-
nal 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)
(a) Transfer to active mode:
In each passive mode, when ºdisarmed state of active
mode " arming preparation transfer conditionº is met, the
active mode transfers to each condition. In this case, ac-
tive mode continues till disarmed state.
Passive mode when transfer condition is
met.Active mode transfer condition
Disarmed stateArming preparation condition
Arming preparation conditionArming preparation condition
Armed state
(During entry delay time)Arming condition
(After alarming time has elapsed, arming
condition)
Alarm soundingAfter alarming time has elapsed, arming
condition
(b) Answer back:
The hazard lights flush as answer back under the follow-
ing conditions.
(1) When the system is set.
When arming preparation is set from disarmed state
using the wireless door lock, the hazard lights flush
once.
(2) When the system is released.
When disarmed state is set from either arming prep-
aration, armed state or alarm sounding using the
wireless door lock, the hazard lights flush twice.
Page 1817 of 1943

Diagnostic mode operation confirmation:
Check the taillight lights up soon after the input opera-
tion of self diagnostic mode.
Ignition Switch OFF
0.2 sec. 0.5 sec.
OFF ON Taillight
Taillight light up should be maximum despite the con-
troller.Is the method to input the diagnostic mode
correct?
Is the function of operation confirmation
taillight normal?
Taillight faulty.
No
No
Ye s
Confirmation of diagnostic mode:
Check taillight light up when pressing on each switch of
transmitter.
(1) Received normal wave of LOCK switch.
NoYe s Ye s
No response
(2) Received normal wave of UNLOCK switch.
(3) Received normal wave of PANIC switch.
(4) Compatibility of the recognition code or out from
synchronization of rolling code.*.
OFF ON
OFF ON
OFF ON
OFF ON
0.2 sec. 0.5 sec.
0.2 sec.
0.2 sec.0.5 sec.
0.5 sec. 0.5 sec.
Transmitter faulty or wireless door lock re-
ceiver faulty.
Use another (normal) transmitter and
check with the diagnostic mode and in the
case that the check result shows the trans-
mitter faulty, it can be judged that wireless
door lock receiver is normal.
While receiving
In case of taillight
outputs of (4) In case of taillight
outputs from (1) ± (3)
Not enter in
diagnostic
mode
BE±80
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
2001 PRIUS (RM778U)
Page 1818 of 1943

Transmitter faulty or wireless door lock receiver
faulty.
Check the wave reaching range with another
transmitter (normal). When the range is normal,
transmitter defection is detected, the range is
not normal, wireless door lock receiver defection
is defected.
The wave reaching range check:
Is the wave reaching range normal?
(1 M area around vehicle)
(While the transmitting switch is pressed,
(approx. 20 secs.) the taillight continuously.
After 20 secs., repress the switch again.)
NoOther body control system faulty.
(Transmitter and receiver are normal.)
Ye s
No
Wireless door control receiver check:
Ye sWire harness faulty (short circuit).
Ye s
RDA terminal open circuit.
No
Check RDA terminal circuit.
Check that the voltage of RDA is about 6 ± 7 V
(when the transmitter is ON).
No
When pressing each switch of
the new or normal transmitter
used in the same type vehicle,
check that all taillights chirps
in the same way.
Transmitter faulty.
Ye s
Check that continuity exists between the receiver
terminal 3 (PRG) and body ECU terminal B9
(PRG).
Check that continuity exists between the receiver
terminal 2 (RDA) and body ECU terminal B10
(RDA).
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±81
2001 PRIUS (RM778U)
Page 1838 of 1943

Start
Security indicator is flashing
Insert a master key (black) into the key cylinder.
Security indicator goes off for 1 sec. and then lights up.
Remove the master key.
Insert the other master key (black) into the key cylinder.
Insert the sub key (gray) into the key cylinder.
Security indicator goes off for 1 sec. and then lights up again.
Remove the sub key
Security indicator is flashing.
End Remove the master key.
Security indicator goes off for 1 sec. and then lights up.
Master key 1
Master key 2
Sub key
± BODY ELECTRICALHYBRID VEHICLE IMMOBILISER SYSTEM
BE±105
1772 Author: Date:
2001 PRIUS (RM778U)
6. KEY REGISTRATION IN AUTOMATIC REGISTRATION MODE
(a) Registration of a new transponder key.
HINT:
This must be done when you install a new transponder key ECU.
It is possible to register up to 2 master key codes and a sub key code.
In the automatic registration mode, the last key registered becomes sub±key.
(b) Initial condition: Battery connected, no key in key cylinder.
Page 1839 of 1943

1.8 Sec.
0.2 Sec.
0.25 Sec. 0.5 Sec.0.25 Sec.
1 Sec. Blinks
Code 2±1 Code2±2
0.25 Sec.
0.25 Sec.0.5 Sec. 1 Sec. BE±106
± BODY ELECTRICALHYBRID VEHICLE IMMOBILISER SYSTEM
1773 Author: Date:
2001 PRIUS (RM778U)
HINT:
When a key is not inserted in the key cylinder on the automatic registration mode, the security indicator
always lights on.
When the immobiliser system operates normally and the key is pull out, the security indicator blinks.
When key code registration could not be performed on the automatic registration mode, code 2±1 is
output from the security indicator and when inserting the already registered key, code 2±2 is output.
(c) Automatic registration mode completion
If completing the mode forcibly when more than 1 key code have been registered on the automatic
registration mode, perform the following procedures.
After 1 more key code have been registered with master key, turn the ignition switch from LOCK to ON
5 times within 10 secs. after inserting the already registered key or without pulling the key out.