Page 1747 of 3115
I27343
Cowl Side J/B RH
SECURITY
ECU-B2
25
3B 3C172
71
3Q3Q
B-R37
39
1 ECU-IG1+B1
5
23
1 IG1 No. 2 Relay
2E
2E 2CAM1IL314
SB
4
IG1
AM122
I18
Ignition Switch
Fusible Link Block
Engine Room R/BF161
F17
F15
1B24BAT
21 Short Pin (A)
1
1C
E 2
MAIN J/B No. 3 J/B No. 2140A ALT
29
Battery1
IF Cowl Side J/B LHT5
Theft Deterrent ECU
B-GLG
+B2 3
B SBIL312 26
2Q 22
2Q
2Q20
SBIL322IF
W-B B-GB-GL-B21
2Q IG10
B-W SBIL315 SB
L-O
Cowl Side J/B LH
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-967
1160 Author: Date:
2004 LAND CRUISER (RM1071U)
Page 1748 of 3115
DI-968
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1161 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check ECU-B2 and SECURITY fuse.
CHECK:
Check continuity of ECU-B2 and SECURITY fuse.
OK:
Continuity
NG Replace faulty fuse.
OK
2 Check voltage between terminals +B1, +B2 and E of theft deterrent ECU connec-
tor.
PREPARATION:
(a) Turn the ignition switch OFF.
(b) Disconnect the theft deterrent ECU connector.
CHECK:
Measure the voltage between terminals +B1, +B2 and E.
OK:
Voltage: 10 - 14V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI-965).
NG
3 Check wire harness and connector between theft deterrent ECU and body
ground (See page IN-36).
NG Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown on
problem symptoms table
(See page DI-965).
Page 1749 of 3115
I25780
T5
Theft Deterrent ECU
SH-
1
Horn DeterrentTheftT1W
W1
IL37
SB 3Q84
3B6 Cowl Side J/B RH DI-972
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1165 Author: Date:
2004 LAND CRUISER (RM1071U)
Theft deterrent horn circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, the relay in the ECU is turned ON and OFF at of approximately
0.2 sec. interval, causing the theft deterrent horn to sound (See the wiring diagram below).
In this condition, if any of the following operations is done, the relay in the ECU is turned OFF, thus stopping
the theft deterrent horn from sounding:
(1) Unlock the driver door with key.
(2) Turn the ignition switch to ON position.
(3) Unlock the doors with the wireless door lock control system.
(4) Wait for approximately 60 seconds.
(5) Press the panic switch of the wireless door lock control system.
WIRING DIAGRAM
DIB4U-02
Page 1751 of 3115
DI01Q-07
THEFT DETERRENT SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date VehicleRegistration No.
Registration Year
Frame No.
Odometer Reading / /km
Mile
Weather Conditions
When Problem
Occurred Frequency Problem OccursWeather
Outdoor Temperature
/ /
Constantly 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.
Once set system
cannot be canceled.
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-954
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1147 Author: Date:
2004 LAND CRUISER (RM1071U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 1753 of 3115
DI3CP-03
I25788
Engine Room R/B
BAT Fuse Theft Deterrent Horn
Ignition Switch
Theft Deterrent ECU
Cowl Side J/B LH
IG1 No.2 Relay
ECU-IG1 Fuse
AM1 Fuse
Cowl Side J/B RH
SECURITY Fuse
ECU-B2 Fuse
Security Indicator Fusible Link Block
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-963
1156 Author: Date:
2004 LAND CRUISER (RM1071U)
PARTS LOCATION
Page 1755 of 3115
Disarmed state
Perform any of the followings, 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 followings, and the system
will return to ºDisarmed stateº:
Open any of the doors, engine hood or
luggage compartment door.
Unlock any of the doors.
Insert the key in the ignition.
Reconnect the battery.
Turn the ignition from OFF to ON.
Armed state
Perform any of the followings, 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 or open the luggage
compartment door with the key ().
Put the key in the ignition and turn it to ON.
Perform any of the followings, 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 or the wireless re-
mote.
Open the engine hood.
Reconnect the battery.
Turn the ignition from OFF to ON.(Key not inserted in ignition.)
Alarm sounding
Perform any of the followings, 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 or open the luggage
compartment door with the key.
Put the key in the ignition and turn it to ON.The vehicle's horn and security horn will
sound, and the hazard,Tail and Head lights flash
for 60 seconds.
After the alarm has ended, the system will
return to ºArmed stateº.
DI-956
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1149 Author: Date:
2004 LAND CRUISER (RM1071U)
Page 1757 of 3115
Perform the following, and the system will go to Disarmed state (B):
Remove the key from the ignition, open any doors, then the ignition OFF.
Disarmed state (A)
Perform any of the followings, and the system
will return to Disarmed state (A):
Push the unlock switch on the wireless
remote.
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 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 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 followings, and the system
will return to Disarmed state (A):
Push the unlock switch on the wireless
remote or key.
Put the key in the ignition and turn it ON.
Armed state
Perform any of the followings, 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.
Reconnect the battery.
Perform any of the followings,
and the system
will return to Disarmed state (A):
Push the unlock switch on the
wireless remote.
Put the key in the ignition.
Reconnect the battery.
Turn the ignition from OFF to
ON.
Alarm sounding
Perform the following, and the system will re-
turn to Armed state :
The alarm sounding period passes. Perform any of the followings, and the system
will return to Disarmed state (A):
Push the unlock switch on the wireless
remote or key.
Put the key in the ignition and turn it ON.
DI-958
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1151 Author: Date:
2004 LAND CRUISER (RM1071U)
Page 1760 of 3115
A04550
DLC3
10 11 12 13 14 15 16 12345678
9
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-961
1154 Author: Date:
2004 LAND CRUISER (RM1071U)
6. FORCED DOOR LOCK CONTROL
While detecting intrusion into the vehicle and sounding alarm,
alarm control outputs the door lock at the moment the door is
unlocked, and prevents intrusion into the vehicle.
(1) Condition for Starting Forced Door Lock
Detecting any of the following conditions activates
the forced door lock.
Alarm system is in alarm status in active
mode.
Except for the case that the key unlock/lug-
gage unlock switch is turned on.
No key is in the ignition key cylinder.
Some of the doors are unlocked.
Since the start of the last forced lock, 0.38
sec. or more has been elapsed.
(2) Conditions for Stopping Forced Door Lock
Detecting any of the following conditions stops the
forced door lock.
All doors are locked.
An alarm is stopped.
A key is inserted into the key cylinder.
7. PANIC CONTROL
The function to sound the alarm when the user presses the pan-
ic switch of the wireless key.
8. ALARM MEMORY CONTROL
If an alarm is activated while a user leaves the vehicle, when the
user comes back to the vehicle and reset the security system,
the tail lights will come on for 2 sec. to show the alarm occur-
rence.
9. DTC CHECK (Using hand-held tester)
(a) Inspect the DLC3.
The vehicle's ECM uses ISO 9141-2 for communication.
The terminal arrangement of DLC3 complies with
SAEJ1962 and matches the ISO 9141-2 format.
HINT:
If the display shows ºUNABLE TO CONNECT TO VEHICLEº
when the cable of hand-held tester is connected to DLC3, the
ignition switch is turned ON and the scan tool is operated, there
is a problem either on the vehicle side or the tool side.
If communication is normal when the tool is connected to
another vehicle, inspect DLC3 on the original vehicle.
If communication does not function when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool's instruction manual.
(b) Make sure the details of the DLC3.
