2001 TOYOTA SEQUOIA door lock

± 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

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

± 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.

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

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.

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

I18620
1
2
I12038
Wire Harness Side:
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±101
3505 Author: Date:
2005 SEQUOIA (RM1146U)
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 after 20 seconds from
the switch was pressed.
Make sure to read the voltage before of it.

High voltage might be shown once or twice 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 rubber cover is not distorted
or slipped off.
3. INSPECT WIRELESS DOOR LOCK BUZZER RESIS-
TANCE
Connect the positive (+) lead from the ohmmeter to terminal 1
and the negative (±) lead to terminal 2, and measure resistance
of approx. 1 kW.
If resistance is not as specified, replace the buzzer.
4. Connector disconnected:
INSPECT WIRELESS DOOR LOCK CONTROL RE-
CEIVER CIRCUIT
Disconnect the connector from the receiver and inspect the
connector on the wire harness side, as shown.
Tester connectionConditionSpecified condition
1 ± GroundAlwaysContinuity
5 ± GroundAlwaysBattery positive voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.

I18617
From Back Side:5 ± 1
BE±102
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
3506 Author: Date:
2005 SEQUOIA (RM1146U)
5. Connector connected:
INSPECT WIRELESS DOOR LOCK CONTROL RE-
CEIVER CIRCUIT
Connect the wire harness side connector to the receiver and in-
spect the wire harness side connector from the back side, as
shown.
Tester connectionConditionSpecified condition
3 ± GroundNormal modeApprox. 10 ± 14 V
2 ± Ground
Ignition switch position OFF,
Key removed,
Transmitter ON
Approx. 6 ± 7 V
If circuit is as specified, replace the receiver.
If the circuit is not as specified, inspect the circuits connected
to other parts.