Page 3513 of 4323

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.
Page 3514 of 4323
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.
Page 3515 of 4323
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.
Page 3516 of 4323

BE±104
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
3508 Author: Date:
2005 SEQUOIA (RM1146U)
2. REPLACE DOOR CONTROL RECEIVER AND TRANS-
MITTER
NOTICE:
When replacing the door control receiver and transmitter,
registration of recognition code is necessary because they
are provided as single components.
(a) Select one of the operations mode should be performed
from the following modes.
Add mode
Rewrite mode
Prohibition mode
Confirmation mode
HINT:
The add mode is used to retain codes already registered
while you register new recognition codes. This mode is
used when adding a transmitter. However, if the number
of registered codes exceeds 4 codes, previously regis-
tered codes are correspondingly erased in order, starting
from the first registered code.
The rewrite mode is used to erase all previously regis-
tered codes and register only new recognition codes.
The prohibition mode is used to erase all registered codes
and cancels the wireless door lock function. Use this
mode when the transmitter is lost.
The confirmation mode is for confirming how many recog-
nition codes are already registered before you register
additional recognition codes.
(b) Follow the chart on the following pages to register the
transmitter recognition code at the wireless door lock con-
trol receiver.
HINT:
When procedure is out of the specified, the operation re-
turns to normal operation.
Maximum 4 recognition codes can be registered.
Page 3517 of 4323
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±105
3509 Author: Date:
2005 SEQUOIA (RM1146U)
Start registration of recognition code
The vehicle should be in the following conditions.
Any door is OPEN. (Other doors are CLOSED)
Insert the key into the ignition key cylinder, then pull it out.
Press the door lock control switch (for manual operation) 5 times to
LOCK/UNLOCK at approx. 1 sec. interval.
1st time 2nd time 3rd time 4th time 5th time
LOCK
OFF
UNLOCK
Approx.
1 sec.Approx.
1 sec.
Close the DRIVER'S door, then open the DRIVER'S door.
Press the door lock control switch again (for manual operation) 5 times to
LOCK/UNLOCK at approx. 1 sec. interval.
1st time 2nd time 3rd time 4th time 5th time
LOCK
OFF
UNLOCK
Approx.
1 sec.Approx.
1 sec.
Insert the key into the ignition key cylinder.
Within
40 secs.
Page 3518 of 4323

BE±106
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
3510 Author: Date:
2005 SEQUOIA (RM1146U)
Within
3 secs.
Turn the ignition switch from ON to LOCK at approx. 1 sec. interval 1 to 5 times to select the mode.
Pull out the key plate from the ignition key cylinder.
When add mode or rewrite mode
is selected.When confirmation
mode is selected.
ON
ONON
OFF
OFFOFF
Approx.
1 sec.Approx.
1 sec. Approx. 1 sec.Approx.
1 sec.Approx.
1 sec.
Add mode
Rewrite modeConfirmation mode
ON ± OFF change occurs 1 time
ON ± OFF change occurs 2 timesON ± OFF change occurs 3 times
MPX body ECU automatically performs
the LOCK±UNLOCK operation once
or twice at 1 sec. interval to inform the
operator that either the add mode or
rewrite mode has been selected.
LOCK±UNLOCK occurs once
LOCK±UNLOCK occurs twice
Indicates that add mode has been selected.
Indicates that rewrite mode has been
selected.
1 sec.
LOCK
1 sec.1 sec.
LOCK
UNLOCK
UNLOCK
LOCK
2 secs.2 secs.
UNLOCK MPX body ECU automatically performs the
LOCK±UNLOCK operation 1 to 4 times at
2 sec. interval to inform the operator of
the number of the registered codes.
HINT:
When the number of the registered code
is 0, the operation is automatically
performed 5 times.
Example:
When the operation is performed twice, it
directs that 2 types of recognition code
have been registered.
1st time 2nd time
Registration of recognition code (Confirmation
mode and prohibition mode) is completed.
ON
OFF
Approx.
1 sec.Approx.
1 sec.
Prohibition mode
ON ± OFF change occurs 5 times
When prohibition
mode is selected.
Within
40secs.
Page 3519 of 4323

± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±107
3511 Author: Date:
2005 SEQUOIA (RM1146U)
MPX body performs LOCK±UNLOCK operation 5 times at a 1 sec.
interval to inform the operator that prohibition mode has been selected.
Press again any switches on the transmitter for more than 1 sec.
MPX body ECU automatically performs LOCK±UNLOCK operation once or
twice at a 1 sec. interval to inform the operator that the receiver has received the
signal from the transmitter.
LOCK±UNLOCK occurs once
LOCK±UNLOCK occurs twice Registration of recognition code is completed.
Registration of recognition code has not been completed.
Recognition code received first time and second time did not match.
Proceed to continue registration
If even one of the following conditions is satisfied, registration of recognition
codes is completed.
40 secs. elapse since the MPX body ECU response.
The driver's door is closed.
The key plate is inserted in the ignition key cylinder.
4 types of recognition codes are registration at one time.
Registration of recognition codes (add mode or rewrite mode) is completed.
Within
3 secs. Within
40 secs.
UNLOCK
Approx.
1 sec.Approx.
1 sec.
When prohibition
mode is selected.
Press the lock and unlock switches on the transmitter simultaneously within 1.5 sec.
If LOCK±UNLOCK operation can not be performed at all, the mode returns to the
normal mode, then start with ºStart registration of recognition codeº.
Proceed to finish registration
Within 40 secs.
Within
3 secs.LOCK
Page 3520 of 4323
BE17F±08
I28418
Instrument Panel J/B
PWR SEAT Fuse
ECU±IG Fuse
Power Seat Motor
(Reclining)Lumbar Support Control Motor
Power Seat Motor (Slide)
Power Seat Motor (Slide)
Power Seat Motor (Front Vertical) Power Seat Motor (Rear Lifter)
Power Seat SwitchPower Seat Motor
(Reclining)
Lumbar Support
Control Switch
BE±108
± BODY ELECTRICALPOWER SEAT CONTROL SYSTEM
3512 Author: Date:
2005 SEQUOIA (RM1146U)
POWER SEAT CONTROL SYSTEM
LOCATION