TOYOTA LAND CRUISER 1998 Factory Repair Manual

DI3CN-03
I25815
Transmitter:Door Key Lock and
Unlock Switch Front Door Lock Assembly

Front Door Lock Motor

Front Door Unlock Detection SwitchRear Door Lock Assembly

Rear Door Lock Motor

Rear Door Unlock Detection Switch
Front Door Lock Assembly

Front Door Lock Motor

Front Door Unlock
Detection Switch
Rear Door Lock Assembly

Rear Door Lock Motor

Rear Door Unlock
Detection Switch
Ignition Switch
Wireless Door Lock ECU
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI-947
1140 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PARTS LOCATION

DI89V-02
I20790
Key Plate Inserted
ON
OFFWithin. 5secs.
1 Key Plate Not Inserted
23 910Within. 30secs.
Once 9 times DI-938
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1131 Author
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PRE-CHECK
1. CHARACTERS OF WIRELESS DOOR LOCK
(a) The operation distance changes according to how cus-
tomers hold the transmitter or where it is used.
(b) Because of using the very weak radio wave, if there is a
strong wave or noise on the frequency being used, the op-
eration distance may become shorter.
2. WIRELESS DOOR LOCK BASIC FUNCTION
(a) Stand on the driver's side. Stay 1 m away from the ve-
hicle.
(b) Turn the transmitter toward the vehicle and press any one
of the transmission switched for 1 sec.
3. INSPECT WIRELESS DOOR LOCK DIAGNOSIS MODE
(a) Start up diagnosis mode.
HINT:
Follow the method below.
(1) Insert the ignition key into the ignition key cylinder.
(2) Remove the ignition key from the ignition key cylin-
der.
(3) Insert the key into the ignition switch.
(4) Turn the ignition switch ON once within 5 sec.
(5) Repeat turning the ignition switch OFF " ON 9
times within 30 sec.
(6) Enter the diagnosis mode, and make sure that the
taillight lights up.
(b) Finishing the Diagnosis Mode.
During the Diagnosis mode, turn the ignition switch OFF
" ON to go back to the normal mode.
At this time make sure that the taillight lights up.

I20456
(1) LOCK switch
(2) UNLOCK switch
(3) Luggage door switch
(4) Disagreement of recognition code or
rolling code.
0.13secs.
0.5secs.
0.13secs. 0.25secs. 0.5secs.
0.5secs. 0.5secs.
OFF ON
OFF ON
OFF ON
OFF ON
While receiving
I04149
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI-939
1132 Author
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(c) Diagnosis Mode Check.
HINT:
Check how the taillight lights up when pressing each transmitter
switch.
(1) LOCK switch
(2) UNLOCK switch
(3) Luggage door switch
(4) Disagreement of recognition code or rolling code.
HINT:
If (4) is detected in the Diagnosis Check, conduct the recogni-
tion code registration.
(5) No response from the taillight.
HINT:
Conduct the following checks.
Wireless door lock transmitter.
Wireless door lock receiver.
4. INSPECT WIRELESS DOOR LOCK TRANSMITTER
OPERATION
HINT:
Refer to º3. REPLACE TRANSMITTER (LITHIUM) BATTERYº.
(a) Using a screwdriver, remove the 2 screws and cover.
(b) Remove the battery (lithium battery).
(c) Install a new or normal battery (lithium battery).
HINT:
When a new or normal battery can not be obtained, connect 2
new 1.5 V batteries in series, connect the battery (+) to the bat-
tery receptacle side terminal and battery (-) to the bottom termi-
nal, then apply 3 V voltage to the transmitter.
(d) In the location where is approx. 1 m away from driver's
outside handle in the right direction, face the key plate of
the transmitter to the vehicle, and check the transmitter
operation when pressing transmission switch of the trans-
mitter body.
Standard:
Remote control of vehicle door lock can be operated.
LED lights up more than once.

I04150
I07522
DI-940
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
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HINT:
The minimum operation distance differs according to op-
erator, the way of holding the transmitter, and location.
As weak wave is used, operation distance might be short-
ened when noise is detected in strong wave or used fre-
quency.
(e) Install the battery (lithium battery).
(f) Install a cover so that O-ring is not distorted or slipped off.
(g) Using a screwdriver, tighten the 2 screws.
5. CHECK BATTERY CAPACITY
HINT:
Make sure to use the TOYOTA electrical tester.
With the battery unloaded, judge can not be made wheth-
er the battery is available or not on the test.
When the transmitter is faulty, the energy amount left in
the battery might not be checked correctly.
On the lithium battery used for the transmitter, the voltage
more than 2.5 V with the battery unloaded is shown on the
tester until the energy is completely consumed.
Accordingly when inspecting the energy amount left in the
battery, it is necessary to measure the voltage when the
battery is loaded. (1.2 kW).
(a) Remove the 2 screws and cover using a (-) driver.
(b) Remove the battery (lithium battery) from the transmitter.
(c) Connect the lead to the (-) terminal of the transmitter and
install the battery.
(d) Connect the (+) tester to the (+) battery (lithium battery),
and (-) tester to the lead respectively.
(e) Press one of the transmitting switches on the transmitter
for approx. 1 second.
(f) Press the transmitting switch on the transmitter again to
check the voltage.
Standard: 2.1 V or more

I04155
I04156
Terminal
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI-941
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HINT:
When the temperature of the battery is low, the judge can
not be made correctly.
When the outcome of the test is less than 2.1 V, conduct
the test again after leaving the battery in the place at 18
°C for more than 30 minutes.
By auto power off function, the voltage becomes no load
voltage (more than 2.5 V) condition 20 seconds after the
switch was pressed.
Make sure to read the voltage before of it.
High voltage might be shown 1 to 2 times after leaving the
battery, judge should be made with the voltage shown at
the 3rd time or later.
(g) Disconnect the lead.
(h) Set the battery (lithium battery) in the transmitter.
(i) Install the cover, so that the O-ring is not distorted or
slipped off.
(j) Using a screwdriver, tighten the 2 screws.
6. REPLACE TRANSMITTER (LITHIUM) BATTERY
NOTICE:
Special caution should be taken for handling each compo-
nent as they are precision electronic components.
(a) Using a screwdriver, remove the screw and cover.
NOTICE:
Do not pry out the cover forcibly.
HINT:
Push the cover with a finger so that there becomes clearance,
then pry out the cover from that clearance.
(b) Remove the transmitter.
(c) Using a screwdriver, remove the 2 screws and cover.
(d) Remove the battery (lithium battery).
NOTICE:
Do not push the terminals with a finger.
If prying up the battery (lithium battery) forcibly to re-
move, the terminals are deformed.
(e) Install a battery (lithium battery) as shown in the illustra-
tion.
NOTICE:
Face the battery upward. Take care not to deform the termi-
nals.
(f) Check that O-ring is not distorted or slipped off, and
install the cover.
(g) Using a screwdriver, tighten the 2 screws.

DI-942
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1135 Author
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NOTICE:
When the shrews are tightened loosely, it might cause
faulty contact of battery (lithium battery) and terminals.
(h) Assemble the transmitter to the key plate and the cover.
(i) Using a screwdriver, tighten the screw.
7. REPLACE DOOR CONTROL RECEIVER AND TRANS-
MITTER
NOTICE:
When replacing the theft deterrent ECU or transmitter, reg-
istration of recognition code is necessary because they
are provided as a single components.
(a) Select the operation mode to perform from the following
operation modes.
Add mode
Rewrite mode
Prohibition mode
Confirmation mode
HINT:
The ºAdd modeº is for adding the newly recognized codes
for registration while the already registered codes are re-
tained. This mode is used when the transmitter is added.
When the number of the registered codes exceeds 4
codes, the previously registered codes will be erased in
order, staring from the first registered code.
The ºRewrite modeº is for erasing all the registered codes
and registering newly recognized codes only. This mode
is used when the transmitter or the door control receiver
is replaced.
The ºProhibition modeº is for erasing all the registered
codes to prohibit the wireless door lock operation. This
mode is used when the transmitter is lost.
The ºConfirmation modeº is for confirming the number of
recognition codes that are registered. This mode is used
to check the number of registered codes when new codes
are added to the registration, etc.
(b) Follow the chart on the following page to register the
transmitter recognition code to the theft deterrent ECU.
HINT:
When procedure is out of the specified, the registration
operation is cancelled
.

Maximum 4 recognition codes can be registered.
For the details of the registration procedure, see page
BE-93.

START
The vehicle should be in the following conditions:

Ignition switch ON
Hand-held tester operation:
1. Select ºL/C 100º from the menu.
2. Select ºTDSº (Theft Deterrent System).
3. Select ºWIRELESS REGISTRATIONº.
After the above operations, proceed to the succeeding operations
according to the prompts on the tester screen.
Transmitter SW Operation:
HINT: Perform this operation during the countdown screen.
Press both lock and unlock SW. (Between 1 and 1.5 sec.)
Press any one of SW. (For more than 1 sec.)
This wireless buzzer sounds when the registration is completed
normally.
Continue the registration.Register other transmitters?
Or
Finish the registration?
Finish the registration.
ENDHINT: Select the next step
on the tester screen.
Within 3 sec.
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI-943
1136 Author
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:
(c) By TOYOTA Hand-Held Tester
HINT:
This page is to show briefly the registration procedure using the hand-held tester.
For detailed procedures, please refer to the prompts on the tester screen.
The number of currently registered codes can be checked out on the first screen of the WIRELESS REG-
ISTRATION.

Close"open"close"open
START
The vehicle should be in the following conditions:

Driver door open (Other doors are closed).
Insert and remove the key into/from the ignition cylinder twice.
Insert"remove "insert"remove
HINT: If the IG switch operation is
not performed with the specified
number of times (If it is 4 times, 6
times or more), this operation is
finished with no response.
HINT: The registration operation is
cancelled if each operation is not
completed within the specified
time.

No key inserted in the IG key cylinder.
Close and open the driver door twice.
Close"open"close"open
Insert and remove the key into/from the ignition cylinder once.
Insert"remove
Insert the key into the ignition key cylinder.
Close all the doors.
Mode Selection
Turn the IG SW ON
u"LOCK once.Add modeTurn the IG SW ON
u"LOCK twice.Rewrite modeTurn the IG SW ON
u"LOCK 3 times. Confirmation modeTurn the IG SW ON
u"LOCK 5 times. Prohibition mode
Remove the key from the IG key cylinder.
Within 5 sec.
Within 40 sec.
Within 40 sec.
Within 40 sec.
Close and open the driver door twice. DI-944
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1137 Author
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(d) By Switch Operation:

Add mode: Response of whether or not being moved to each mode is given with
the number of times of door lock working (lock/unlock).
Within 3 sec.
Within 40 sec.
Within 3 sec.
Rewrite mode:

Confirmation mode:

Prohibition mode:once*1
twice*1
The number of times equivalent to the number
of currently registered codes*2
5 times*1
HINT: The confirmation mode and the prohibition mode are finished
after the responses.
Transmitter SW Operation:
Press both lock and unlock SW. (Between 1 and 1.5 sec.)
Press any one of SW. (For more than 1 sec.)
Response of whether or not the registration is completed is given in the
form of the number of times of door lock operations (lock/unlock opera-
tion).
Register other transmitters?
or
Finish the registration?
Finish the registration.
Within 3 sec.Confirmation mode
Prohibition mode
END Add mode,
Rewrite mode
When registration is completed:
When registration is not completed:once*1
twice*1

Insert the key into the IG key cylinder. Perform one of the following operations to finish the Add mode and the
Rewrite mode.

Open any one of the doors.

Wait for 40 sec. after the code registration.
HINT: In case of registering 4 codes at a time, the mode will be finished
when the 4
th code is registered. Continue
the registration.
Within 40 sec.
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI-945
1138 Author
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:

DI0DV-12
DI-948
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1141 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
Perform troubleshooting of the circuit for the applicable problem symptom in the order given in the chart be-
low. Proceed to the page located for each circuit.
HINT:

Troubleshooting of the wireless door lock control system is based on the premise that the door lock
control system and theft deterrent system are operating normally. Accordingly, before troubleshooting
the wireless door lock control system, first make certain that the door lock control system and theft de-
terrent system are operating normally.

If the instruction ºProceed to next circuit inspection shown on matrix chartº is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.

If the trouble still reappears even through there are no abnormalities in any of the other circuits, check
and replace the Wireless Door Lock ECU as the last step.
SymptomSuspect AreaSee page
All function of wireless door lock control system do no operate.
1. ECU Power Source Circuit.
2. Door Courtesy Switch Circuit.
3. Door Key Lock and Unlock Switch Circuit.
4. Key Unlock Warning Switch Circuit.
5. Wireless Door Lock ECU.
6. Body ECU (Main).DI-951
DI-1062
DI-1 106
DI-1060
IN-36
IN-36
Only door unlock operation is not possible (Lock operation is pos-
sible).
1. Door Key Lock and Unlock Switch Circuit
2. Door Unlock Detection Switch Circuit
3. Wireless Door Lock ECU.
4. Body ECU (Main).DI-1 106
DI-1060
IN-36
IN-36
Only door lock operation is not possible (Unlock operation is pos-
sible).1. Door Key Lock and Unlock Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1 106
IN-36
IN-36
Only transmitter misoperation prevention function is not possible.
1. Key Unlock Warning Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1060
IN-36
IN-36
Wireless door lock function operates even when each door is
opened.1. Door Courtesy Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1062
IN-36
IN-36
Wireless door lock functions incorrectly.
(Although one door is unlocked, when the transmitter switch is
pressed, all doors unlock. )1. Door Unlock Detection Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1060
IN-36
IN-36
Wireless door lock operates, but the taillight does not respond.
1. Taillight Relay Circuit
2. Taillight Circuit
3. Wireless Door Lock ECU
4. Body ECU (Main).DI-1076
DI-1076
IN-36
IN-36