Page 3505 of 4323

BE2MK±01
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±93
3497 Author: Date:
2005 SEQUOIA (RM1146U)
WIRELESS DOOR LOCK CONTROL SYSTEM
ON±VEHICLE INSPECTION
Make the vehicle in the initialized condition:
The initialized condition is the condition when the following conditions are satisfied.
(1) Key plate has not been inserted in the ignition key cylinder.
(2) All the doors are closed. (Door warning light is OFF.)
(3) All the doors are locked.
Under the standard operation, when repeating UNLOCK and LOCK switch 3 times or more alternately, check the
UNLOCK±LOCK operation from 3rd time onward.
Following procedures are standard operation.
(1) Keep about 1 M away to the right direction from the outside handle of a driver's seat.
(2) Face the transmitter toward the vehicle and press one of transmitter switches for about 1 sec.
As of the security function, even the wireless function is normal, there may be the case that only UNLOCK opera-
tion will not work.
As of the body customize function, if ºoperation twiceº has been set using hand±held tester, only driver's seat
is unlocked by unlock operation performed once.
Normal
Operative distance may differ according to
an operator, the way of holding the transmitter
or position.
Because weak electric wave is used, when
there is strong wave or noise in the used
frequency, operation distance might be
shortened.
No Yes
Only wireless function (Remote control) will not operate.
(If a new transmitter or a transmitter of the same type that works properly with the vehicle is not available.)
Basic function check:
Page 3506 of 4323

BE±94
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
3498 Author: Date:
2005 SEQUOIA (RM1146U)
Replace the transmitter battery with a new or normal
one and check UNLOCK±LOCK function works under
the standard operation.
The battery should be replaced by only the shops with
sufficient skill as new or normal battery is necessary.
Battery quality can be judged by checking the rem-
nant volume of the battery.
Ye s
Battery faulty.
No
Make the vehicle be in the initialized condition.
Enter into the self diagnostic mode.
If operating door control receiver in the order of 1 through 2, the mode turns to diagnostic mode.
(1) Insert the key plate in the ignition key cylinder and pull out, then insert it again and turn ignition switch
OFF " ON " OFF once within 5 seconds after pulling out.
(2) After completing the procedure within 30 seconds, turn the ignition switch OFF " ON " OFF 9 times.
HINT:
In the case that either (1) or (2) condition is not satisfied, transfer to normal mode.
When completing self±diagnostic mode, turn the ignition switch ON.
LOCK and UNLOCK operation and output of luggage door opener signal are not performed under the self
diagnostic mode.
1st time9th times ON
OFF
Transmitter battery check:
Inspection start by using self diagnostic mode:
within.
30 sec.within.
5 sec.
12 910
Key plate
not inserted
Key plate
inserted
Ignition
switch
Page 3507 of 4323

± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±95
3499 Author: Date:
2005 SEQUOIA (RM1146U)
No
No
(Not entered in self
diagnostic mode)Is the method to enter into the
diagnostic mode correct?
Self diagnostic mode operation check:
Ye s
(Entered in self diagnostic mode)
After the self±diagnostic mode input operation has
been performed, check that the buzzer chirps.
ON
OFF BuzzerIgnition switch OFF
0.13 sec. 0.5 sec.
Is the chirping function of operation
confirmation buzzer normal?
Check door control buzzer.
Check that continuity exists between
connector terminal A3 of MPX body ECU
on the vehicle side and ground by
inserting the key plate into the ignition
key cylinder. Key unlock warning switch inspection:
Ye s Ye s
No
Check key unlock warning switch.
Self diagnostic mode check:
Check that how the buzzer chirps when pressing
each transmitter switch.
ON
OFF Buzzer
0.13 sec.0.5 sec.
(1) Receiver normal wave of LOCK switch.
ON
OFF Buzzer
0.13 sec.
0.25 sec.
(2) Receiver normal wave of UNLOCK switch.
0.5 sec.
ON
OFF Buzzer
(3) Receiver normal wave of luggage door switch.
0.5 sec.0.5 sec.
ON
OFF (4) Incompatibility of the recognition code or out
from synchronization of rolling code.
While receiving
:
While turning the ignition switch ON in the self±
diagnostic mode, the mode returns to normal mode. Buzzer
(1), (2) or (3) are output.(4) is output.
(All buzzer's response
is same.)
Recognition code registration function check:
Check that it is possible to enter into
rewrite mode or add mode.
(Refer to ºWireless door lock receiver and
transmitterº ± ºRecognition code registrationº.)
Wireless door lock operates
normally when recognition code
is registered.
No response from buzzer
Page 3508 of 4323

BE±96
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
3500 Author: Date:
2005 SEQUOIA (RM1146U)
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 detected.
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 buzzer chirps 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:
Check the diagnosis. (wireless door lock signal error)
(Refer to ºMultiplex communication systemº)
Check that diagnostic code B1242 is output
(see page xx±xxx).Wire harness faulty (short circuit)
Between the receiver terminal 2 (RDA) and
body ECU terminal B5±4 (RDA).
Between the receiver terminal 3 (PRG) and
body ECU terminal B5±5 (PRG).Ye s
No
When pressing each switch of
the new or normal transmitter
used in the same type vehicle,
check that all buzzers chirp
in the same way.
Transmitter faulty.
Ye s
DOME fuse or wire harness faulty.
Ye s
+B power source check:
Check that there is constantly 10 to 14 V voltage at the
connector terminal 5 (+B) of wireless door control
receiver.
No
Page 3509 of 4323
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±97
3501 Author: Date:
2005 SEQUOIA (RM1146U)
Wire harness faulty.
Body ground open and contact error.
Ye s
Body ground check:
Check that continuity exists between the connector
terminal 1 (GND) of the wireless door control receiver
and body ground.
No
Wireless door control receiver faulty.
Page 3510 of 4323
BE0GM±16
I28417
Transmitter
Door Lock Assembly Ignition Switch
Door Lock Assembly
Wireless Door Lock
Control Receiver
(Located behind the heater control panel)
BE±98
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
3502 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION
Page 3511 of 4323

BE0GO±11
I21534
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±99
3503 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT WIRELESS DOOR LOCK TRANSMITTER
OPERATION
HINT:
Refer to ºWireless door lock control transmitter battery replace-
mentº on page BE±103.
(a) Using a screwdriver, remove the 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 the battery (±) to the bottom
terminal, then apply 3 V voltage to the transmitter.
(d) In the location where transmitter is approx. 1 M away from
the driver's outside handle in the right direction, check
transmitter operation while pressing transmission switch
on the side of the transmitter body.
Standard:
Remote control of the vehicle door lock can be operated.
HINT:
The minimum operation distance differs according to op-
erator, the way of holding the transmitter, and location.
As a weak wave is used, operating distance might be
shortened when noise is detected in a strong wave or a
used frequency.
(e) Install the battery (lithium battery).
(f) Install the cover so that a rubber cover is not distorted or
slipped off.
Page 3512 of 4323

N30016
I21529
BE±100
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
3504 Author: Date:
2005 SEQUOIA (RM1146U)
2. 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 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