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
-
Page 1763 of 3115

DI1AH-21
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
I24938
T5 DI-964
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1157 Author: Date:
2004 LAND CRUISER (RM1071U)
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSpecified condition
SH- e Body Ground
(T5-1 e Body Ground)W e W-BAlways10 - 14 V
+B1 e Body ground
(T5-2 eBody ground)LG eBody
GroundAlways10 - 14 V
+B2 e Body Ground
(T5-3 e Body Ground)B e Body
GroundAlways10 - 14 V
HORN e E
(T5-5 e T5-29)G-O e W-BHorn switch ºOFFº10 - 14 V
IG e E
(T5-10 e T5-29)B-W e W-BIgnition switch is turned to ºONº position10 - 14 V
GBS e EYGWBGlass sensor is ºONº10 - 14 VGBS e E
(T5-1 1 e T5-29)Y-G e W-BGlass sensor is ºOFFºBelow 1 W
KSW e ERBWB
Key unlock warning switch ºONº
(Key inserted)Below 1 WKSW e E
(T5-12 e T5-29)R-B e W-BKey unlock warning switch ºOFFº
(Key removed)1 MW or higher
IND e E
(T5-25 e T5-29)G-R eW-BDuring set preparation3 - 5 V
E e Body ground
(T5-29 e Body Ground)W-B e Body
GroundAlways10 - 14 V
MPX1
(T5-31)BMultiplex communication circuit-
DSWH e ELRWB
Engine hood courtesy switch ºONº
(Engine hood opened)Below 1 WDSWH e E
(T5-34 e T5-29)L-R e W-BEngine hood courtesy switch ºOFFº
(Engine hood closed)1 MW or higher
Page 1764 of 3115
I27942
BJ1
BP45D27
Wireless Door
Lock Receiver
+B
W-B1
W-BE to DOME Relay
L-Y
L-Y
EEJ22
J/C
9
BP4
W-B
I25058
+B(+)
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI-951
1144 Author: Date:
2004 LAND CRUISER (RM1071U)
ECU Power Source Circuit
CIRCUIT DESCRIPTION
Battery positive voltage is always applied to the terminal +B of the wireless door lock ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminal +B of ECU connector and ground.
PREPARATION:
Remove the wireless door lock ECU.
CHECK:
Measure voltage between terminal +B of ECU connector and
ground.
OK:
Voltage: 10 - 14 V
OK Proceed to next circuit inspection shown in
problem symptom table (See page DI-948).
NG
DIB5V-02
Page 1765 of 3115
DI-952
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1145 Author: Date:
2004 LAND CRUISER (RM1071U)
2 Check wire harness and connector between wireless door lock ECU and body
ECU (Main) (See page IN-36).
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in
problem symptom table (See page DI-948).
Page 1766 of 3115
DIB5U-01
I25830
Body ECU D27
Wireless Door Lock Tuner
2PRG
RDA 4
L 8
BP4 3
B8 L
L 17
ID4 3
BP4 VV
V 18
ID43
B8 PRG
RDA
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI-949
1142 Author: Date:
2004 LAND CRUISER (RM1071U)
CIRCUIT INSPECTION
DTC B1242 Wireless door lock receiver circuit mal-
function
CIRCUIT DESCRIPTION
This DTC is output when GND short of RDA terminal is detected.
DTC No.DTC Detecting ConditionTrouble Area
B1242/42GND short of RDA terminal
Wire harness
Wireless door lock tuner
Body ECU (Main)
WIRING DIAGRAM
Page 1767 of 3115
I03347
Tuner
Body ECU
(Main) RDA
I03348
Tuner Body ECU
(Main)
DI-950
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1143 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check wire harness.
PREPARATION:
Disconnect the connector of tuner and body ECU.
CHECK:
Check the continuity between wireharness and body ground.
OK:
No continuity.
NG Repair or replace the wire harness.
OK
2 Check body ECU.
PREPARATION:
Connect the connector of body ECU.
CHECK:
Check the DTC.
OK:
B1242 is not output.
NG Replace the body ECU (Main).
OK
Replace the tuner.
Page 1768 of 3115

DI0DR-04
WIRELESS DOOR LOCK CONTROL System Check Sheet
Customer 's Name
Registration No.
Registration Year
Frame No.
Odometer ReadingInspector 's
Name
km
Miles //
//
// Date Vehicle Brought In
Date Problem First Occurred
Frequency Problem Occurs
Weather Conditions
When Problem Oc-
curred
Date Transmitter Battery Last ReplacedWeather
Outdoor Temperature
PlaceConstant Sometimes ( times/per day, month)
Once only
Fine Cloudy Rainy Snowy
Various/Others
HotWarm Cool
Cold (Approx. °F ( °C))
EverywhereSpecific Locality( )
//
Problem Symptom
Whole wireless door lock control system does not operate.
Only door unlock operation is not possible.
Only door lock operation is not possible.
Only key confinement prevention function is not possible.
Wireless door lock function operates even when each door is opened.
Wireless door lock functions incorrectly.
( Although one door is unlocked, when the transmit-
ter switch is pressed, all doors become unlocked.)When RH door is unlocked
When LH door is unlocked
Others
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI-937
1130 Author: Date:
2004 LAND CRUISER (RM1071U)
CUSTOMER PROBLEM ANALYSIS CHECK