Page 343 of 3115
BE-10
- BODY ELECTRICALTROUBLESHOOTING
2383 Author: Date:
2004 LAND CRUISER (RM1071U) Passenger's seat heater does not operate.
1. Seat Heater Switch (D, P)
2. Wire HarnessBE-121
-
Seat heater temperature is too hot.1. Seat HeaterBE-121
AUDIO SYSTEM:
SymptomSuspect AreaSee page
Audio system abnormal operation.TROUBLESHOOTINGSBE-129
MULTI DISPLAY:
SymptomSuspect AreaSee page
Clock will not operate.TROUBLESHOOTINGBE-178
Clock loses or gains time.TROUBLESHOOTINGBE-178
GARAGE DOOR OPENER SYSTEM:
SymptomSuspect AreaSee page
The equipment of which code has been registered does not oper-
ate.1. Garage Door Opener Switch
2. Wire Harness
3. *BE-190
-
-
LED does not light up. (Even though either switch is pressed.)1. Garage Door Opener Switch
2. Wire HarnessBE-190
-
LED does not light up. (Only one switch is pressed.)Garage Door Opener SwitchBE-190
* As the GARAGE DOOR OPENER on the vehicle side seems to be normal, check the OPENER on the
equipment side, of which code has been registered.
ENGINE IMMOBILIZER SYSTEM:
SymptomSuspect AreaSee page
Engine immobilizer system does not operate.See DIAGNOSIS SYSTEMDI-1002
HORN SYSTEM:
SymptomSuspect AreaSee page
Horn system does not operate.
1. HORN Fuse
2. Engine Room J/B Relay Circuit
3. Horn Switch
4. Horn
5. Wire Harness-
BE-15
BE-198
BE-198
-
Horns blow all the time.
1. Engine Room J/B Relay Circuit
2. Horn Switch
3. Wire HarnessBE-15
BE-198
-
One horn operates but the other horn does not operate.1. Horn
2. Wire HarnessBE-198
-
Horns operate abnormally.
1. Engine Room J/B Relay Circuit
2. Horn
3. Wire HarnessBE-15
BE-198
-
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 1750 of 3115
BE1239
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-973
1166 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
In case of using the hand-held tester, start the inspection from step 1 and in case of not using the hand-held
tester, start from step 2.
1 Check theft deterrent horn using hand-held tester.
PREPARATION:
Connect the hand-held tester to the DLC 3.
CHECK:
Check that the theft deterrent horn sounds in ACTIVE TEST (See page DI-955).
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI-965).
NG
2 Check theft deterrent horn.
CHECK:
Connect positive (+) lead to terminal 1 and negative (-) lead to
body ground of theft deterrent horn connector, and that the theft
deterrent horn blows.
OK:
Horn sounding.
NG Replace theft deterrent horn.
OK
3 Check wire harness and connector between theft deterrent ECU and theft deter-
rent horn (See page IN-26).
NG Check and repair wire harness or connector.
OK
Proceed to next circuit inspection shown on
problem symptoms table (See page
DI-965).
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 1761 of 3115
I24672
Hand-held tester
DLC3
DI-962
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1155 Author: Date:
2004 LAND CRUISER (RM1071U)
(c) Prepare the hand-held tester.
(d) Connect the hand-held to DLC3.
(e) Turn the ignition switch ON and the hand-held tester
main switch ON.
(f) Use the hand-held tester to check the DTCs, note them
down. (For opening instructions, see the hand-held tes-
ter 's intrusion book).
10. DATA LIST
HINT:
By the DATA LIST displayed on the Hand-held tester, you can read the value of the switch, sensor, actuator
and so on without removing any parts. Reading the DATA LIST as a first step of troubleshooting is one of
the method to shorten the labor time.
(a) Turn the ignition switch OFF.
(b) Connect the hand-held tester to DLC3.
(c) Turn the ignition switch ON.
(d) According to the display on the tester, read the ºDATA LISTº.
THEFT DETERRENT ECU:
ItemConditionSpecified Condition
HOOD COURTSY SWEngine hood Close " OpenOFF/ON
INTRS DETECTIntrusion sensor detection OFF " ONOFF/ON
GLS BRK DETECTGlass broken sensor detection OFF " ONOFF/ON
KEY UNLK WRN SWInsert keyOFF/ON
IG SWIG switch ON or otherOFF/ON
PASSIVE MODEPassive mode " other modeOFF/ON
WARN BY GLS SENWarning by glass broken sensor OFF " ONOFF/ON
INTRUSION SENIntrusion sensor OFF " ONOFF/ON
WARNING (HORN)Warning by Horn OFF " ONOFF/ON
ENTRY DELAYEntry delay time0 s/14 s /30 s
11. ACTIVE TEST
HINT:
Performing ACTIVE TEST using the Hand-held tester allows the relay, and so on to operate without remov-
ing any parts. Performing ACTIVE TEST as a first step of troubleshooting is one of the method to shorten
the labor time.
DATA LIST can be displayed during ACTIVE TEST.
(a) Turn the ignition switch OFF.
(b) Connect the Hand-held tester to DLC3.
(c) Turn the ignition switch ON.
(d) According to the display on tester, perform the ºACTIVE TESTº.
THEFT DETERRENT ECU:
ItemTest detailsDiagnostic note
SECURITY INDICTurns security indicator ON/OFFConnect terminals TC and E1 of DLC1
SECURITY HORN2Turns security horn2 ON/OFF-
Page 1762 of 3115
DI01U-14
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-965
1158 Author: Date:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSee page
Theft deterrent system is not set.
1. Security indicator circuit
2. Key unlock warning switch circuit
3. Door courtesy switch circuit
4. Door unlock detection switch circuit
5. Engine hood courtesy switch circuit
6. Power source circuit
7. Theft deterrent ECUDI-969
DI-974
DI-1062
DI-1 110
DI-976
DI-966
-
Security indicator does not light up or blink.1. Security indicator circuit
2. Theft deterrent ECUDI-969
-
Theft deterrent system cannot be unset even if ignition switch is
ON.1. Key unlock warning switch circuit
2. Power source circuit
3. Theft deterrent ECUDI-974
DI-966
-
During warning condition, horn does not operate.1. Horn circuit
2. Theft deterrent ECUDI-972
-
