2001 TOYOTA SEQUOIA terminal TC

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.

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.

BE267±05
N30017
N13468
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±103
3507 Author: Date:
2005 SEQUOIA (RM1146U)
REPLACEMENT
1. REPLACE TRANSMITTER (LITHIUM) BATTERY
NOTICE:
Great caution should be taken for handling each compo-
nent as they are precision electronic components.
(a) Using a screwdriver, remove the cover.
NOTICE:
Do not pry out the cover forcibly.
HINT:
Push the cover with a finger as shown in the illustration, so that
there becomes clearance, then pry out the cover from that
clearance.
(b) Remove the transmitter.
(c) 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.
(d) Install a battery (lithium battery) as shown in the illustra-
tion.
NOTICE:
Face the battery upward. Take care not to deform the termi-
nals.
(e) Check that the rubber cover is not distorted or slipped off,
and install the cover.

I27710
ForwardRelease
I07253
(a)
(b)
2
1
1 2
I11936
21
I11937
21
I07254
(a)
(b)
21
1 2
BE±110
± BODY ELECTRICALPOWER SEAT CONTROL SYSTEM
3514 Author: Date:
2005 SEQUOIA (RM1146U)
3. INSPECT DRIVER'S LUMBAR SUPPORT CONTROL
SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
Forward1 ± 2, 3 ± 4Continuity
OFF1 ± 2, 4 ± 5Continuity
Release1 ± 3, 4 ± 5Continuity
If continuity is not as specified, replace the switch.
4. INSPECT SLIDE MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, check that the
motor turns clockwise.
(b) Reverse the polarity, check that the motor turns counter-
clockwise.
If operation is not as specified, replace the seat adjuster.
5. INSPECT SLIDE MOTOR PTC THERMISTOR OPERA-
TION
( ): Passenger Side
(a) Connect the positive (+) lead from the battery to terminal
2 (1), the positive (+) lead from the ammeter to terminal
1 (2) and the negative (±) lead to the battery negative (±)
terminal, then move the seat cushion to the rear position.
(b) Continue to apply voltage, check that current changes to
less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 1 (2) and the negative (±)
lead to terminal 2 (1), check that the seat cushion begins
to move forwards.
If operation is not as specified, replace the seat adjuster.
6. INSPECT FRONT TILT MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, check that the
motor turns clockwise.
(b) Reverse the polarity, check that the motor turns counter-
clockwise.
If operation is not as specified, replace the seat adjuster.

N22086
21
N22087
21
I07255
(a)
1(b)
22
1
I11940
21
I11941
21
± BODY ELECTRICALPOWER SEAT CONTROL SYSTEM
BE±111
3515 Author: Date:
2005 SEQUOIA (RM1146U)
7. INSPECT FRONT TILT MOTOR PTC THERMISTOR OP-
ERATION
(a) Connect the positive (+) lead from the battery to terminal
1, the positive (+) lead from the ammeter to terminal 2 and
the negative (±) lead to the battery negative (±) terminal,
then move the seat cushion to the highest position.
(b) Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from the terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 and the negative (±)
lead to terminal 1, check that the seat cushion begins to
descend.
If operation is not as specified, replace the seat adjuster.
8. INSPECT LIFTER MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, check that the
motor turns clockwise.
(b) Reverse the polarity, check that the motor turns counter-
clockwise.
If operation is not as specified, replace the seat adjuster.
9. INSPECT LIFTER MOTOR PTC THERMISTOR OPERA-
TION
(a) Connect the positive (+) lead from the battery to terminal
1, the positive (+) lead from the ammeter to terminal 2 and
the negative (±) lead to the battery negative (±) terminal,
then move the seat cushion to the lowest position.
(b) Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from the terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 and the negative (±)
lead to terminal 1, check that the seat cushion begins to
ascend.
If operation is not as specified, replace the seat adjuster.