2001 TOYOTA SEQUOIA Back Seat

SS±50
± SERVICE SPECIFICATIONSBODY
192 Author: Date:
2005 SEQUOIA (RM1146U) Rear seat reclining adjuster x Seat cushion frame
4344032
Rear seat reclining adjuster x Seatback frame4344032
REAR NO. 2 SEAT±±±
Seat adjuster x Seat cushion frame1919514
No .2 seat reclining adjuster x Seat cushion frame4344032
No. 2 seat reclining adjuster x Seatback frame4344032
SEAT BELT±±±
Front seat outer belt shoulder anchor x Adjustable anchor4243032
Front seat outer belt floor anchor x Body4243032
Front seat outer belt retractor x Body4243032
Adjustable anchor x Body4243032
Front seat inner belt x Front seat4243032
Rear No. 1 seat outer belt shoulder anchor x Adjustable anchor4243032
Rear No. 1 seat outer belt floor anchor x Body4243032
Rear No. 1 seat outer belt retractor x Body Upper bolt:8.58776 in.´lbf
Rear No. 1 seat outer belt retractor x Body Lower bolt:4243032
Rear outer belt retractor x Rear No. 1 seat4243032
Rear outer belt floor anchor x Rear seat lock4243032
Rear No. 2 seat outer belt shoulder anchor x Body4243032
Rear No. 2 seat outer belt floor anchor x Body4243032
Rear No. 2 seat outer belt retractor x Body Upper bolt:8.58776 in.´lbf
Rear No. 2 seat outer belt retractor x Body Lower bolt:4243032
Rear No.2 seat outer center belt x Body4243032
Rear No. 2 inner belt x Rear No. 2 seat4243032
SIDE STEP±±±
Side step bracket x Body1919514
Step plate x Side step bracket4.95043 in.´lbf
ROOF RACK±±±
Front leg x Body1111 58
Center support x Body1111 58
Rear leg x Body1111 58
SPOILER±±±
Rear spoiler x Body121208

DICY7±02
DI±1118
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1312 Author: Date:
2005 SEQUOIA (RM1146U)
SUPPLEMENTAL RESTRAINT SYSTEM
PRECAUTION
NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.
System NameSee Page
Back Door Power Window Control SystemBE±77
1. HANDLING PRECAUTIONS FOR AIRBAG SENSOR
HINT:
In this section, the airbag sensor assembly, front airbag sensor LH, front airbag sensor RH, side airbag sen-
sor assembly LH, side airbag sensor assembly RH, curtain shield airbag sensor assembly LH, curtain shield
airbag sensor assembly RH and seat position airbag sensor assembly are collectively referred to as the air-
bag sensor.
(a) Before starting the following operations, wait at least 90 seconds after disconnecting the negative (±)
terminal of the battery:
(1) Replacement of the airbag sensor.
(2) Adjustment of the front/rear doors of the vehicle equipped with the side airbag and curtain shield
airbag (fitting adjustment).
(b) When connecting or disconnecting the airbag sensor connector, ensure that all of the sensors are
installed in the vehicle.
(c) Do not use an airbag sensor which has been dropped during the operation or transportation.
(d) Do not disassemble the airbag sensor.
2. INSPECTION PROCEDURE FOR VEHICLE INVOLVED IN ACCIDENT
(a) When the airbag has not deployed, confirm the DTC by checking the SRS warning light. If there is any
malfunction in the SRS airbag system, perform troubleshooting.
(b) When any of the airbags have deployed, replace the airbag sensor and check the installation condition.
(c) Perform the zero point calibration and sensitivity check under the condition is listed below (see page
DI±1128).

The occupant classification ECU is replaced.

Accessories (seatback tray, seat cover, etc.) are installed.

The passenger seat removed from the vehicle.

The passenger airbag ON/OFF indicator (ºOFFº) comes on when the passenger seat is not occu-
pied.

The vehicle is brought to the workshop for repair due to an accident or a collision.
NOTICE:
When an accident vehicle is brought into the workshop for repair, check the flatness of the body side
that is installed on the passenger seat. If the flatness is not within ± 3.0 mm (0.118 in.), repair it to
the specified range (within ± 3.0 mm (0.118 in.)).

DIDGK±01
A08841
Hand±held Tester
DLC3
DI±1128
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1322 Author: Date:
2005 SEQUOIA (RM1146U)
INITIALIZATION
ZERO POINT CALIBRATION AND SENSITIVITY CHECK
NOTICE:
Make sure that the seat is not occupied before performing
the operation.
HINT:
Perform the zero point calibration and sensitivity check if any of
the following conditions occur.

The occupant classification ECU is replaced.

Accessories (seatback tray and seat cover, etc.) are
installed.

The passenger seat is removed from the vehicle.

The passenger airbag ON/OFF indicator (ºOFFº) comes
on when the passenger seat is not occupied.

The vehicle is brought to the workshop for repair due to
an accident or a collision.
Zero point calibration and sensitivity check procedures.
HINT:
Make sure that zero point calibration has finished normally, and
then perform the sensitivity check.
(1) Adjust the seat position according to the table be-
low.
Adjustment ComponentPosition
Slide DirectionRearmost position
Reclining AngleUpright position
Headrest HeightLowest position
Lifter HeightLowest position
(2) Connect the hand±held tester to the DLC3.
(3) Turn the ignition switch to the ON position.
(4) Perform the zero point calibration by following the
prompts on the tester screen shown in 2 pages lat-
er.
HINT:
Refer to the hand±held tester operator's manual for further de-
tails.
OK:
The ºCOMPLETEº is displayed.

DI±1342
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1536 Author: Date:
2005 SEQUOIA (RM1146U)
DTC B1794 Occupant Classification ECU Battery
Positive Line Open
CIRCUIT DESCRIPTION
This circuit consists of the occupant classification ECU and the power source circuit (battery, fuse, wire har-
ness).
DTC B1794 is recorded when a malfunction is detected in the occupant classification ECU or the power
source circuit.
HINT:
When DTC B1794 is output after switching the ignition switch LOCK±ON±LOCK 50 times in a row when a
malfunction occurs in the power source circuit for the occupant classification system, the DTC is output again
when a malfunction is detected even once after being cleared, unless the normal system code is input.
DTC No.DTC Detecting ConditionTrouble Area
B1794

The ignition switch is turned from LOCK to ON, hold for 10
seconds or more, and back to LOCK again 50 times in a
row when a malfunction occurs in the power source circuit
for the occupant classification system.

Occupant classification ECU malfunction
Battery

ECU±B Fuse

Floor wire

Seat wire No. 1

Occupant classification ECU
HINT:
When DTC B1650/32 is detected as a result of troubleshooting for the supplemental restraint system, check
the DTCs stored in the occupant classification ECU. When DTC B1794 is output, perform troubleshooting
for the DTC.
DIDHF±01

DIDDW±01
± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI±1501
1695 Author: Date:
2005 SEQUOIA (RM1146U)
POWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)
PRECAUTION
NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.
System NameSee Page
Back Door Power Window Control SystemBE±77

DI±1510± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)
1704 Author: Date:
2005 SEQUOIA (RM1146U) RCL+ (M7±8) ±
GND (M7±1)
P ± W±BReclining motor signal
(Forward)Seat back moving forward
using reclining switch "
Others
10 to 14 V " Below 1 V
RCL± (M7±10) ±
GND (M7±1)BR ± W±BReclining motor signal
(Rearward)Seat back moving rear-
ward using reclining switch
" Others
10 to 14 V " Below 1 V
If the result is not as specified, the position control ECU & switch assy may be malfunctioning.

DIDGG±01
± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI±1511
1705 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the DATA LIST displayed on the hand±held tester, you can read the value of the switch, sensor, etc.
without parts removal. Reading the DATA LIST as the first step of troubleshooting is one way to shorten the
labor time.
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) Read the DATA LIST according to the display on the tester.
D±SEAT:
ItemMeasurement Item/
Display (Range)Normal Condition
RECLIN SW REARReclining switch signal (Rearward)/
ON or OFFON: Reclining switch (Rearward) is ON
OFF: Reclining switch (Rearward) is OFF
RECLIN SW FRONTReclining switch signal (Forward)/
ON or OFFON: Reclining switch (Forward) is ON
OFF: Reclining switch (Forward) is OFF
F VTCL SW DOWNFront vertical switch signal (Downward)/
ON or OFFON: Front vertical switch (Downward) is ON
OFF: Front vertical switch (Downward) is OFF
F VTCL SW UPFront vertical switch signal (Upward)/
ON or OFFON: Front vertical switch (Upward) is ON
OFF: Front vertical switch (Upward) is OFF
LIFTER SW DOWNLifter switch signal (Downward)/
ON or OFFON: Lifter switch (Downward) is ON
OFF: Lifter switch (Downward) is OFF
LIFTER SW UPLifter switch signal (Upward)/
ON or OFFON: Lifter switch (Upward) is ON
OFF: Lifter switch (Upward) is OFF
SLIDE SW REARSliding switch signal (Rearward)/
ON or OFFON: Sliding switch (Rearward) is ON
OFF: Sliding switch (Rearward) is OFF
SLIDE SW FRONTSliding switch signal (Forward)/
ON or OFFON: Sliding switch (Forward) is ON
OFF: Sliding switch (Forward) is OFF
POWER VOLTAGEPower supply for position control ECU & switch/
MIN: 0 V, MAX: 19.89 VWithin range from 11 V to 14 V
IG SWIgnition switch status/
ON or OFFON Ignition switch is ON
OFF: Ignition switch is OFF
KEY UNLOCK SWKey unlock warning switch signal/
ON or OFFON: Key is in ignition key cylinder
OFF: Key is not in ignition key cylinder
D±DOOR WARN SWDoor courtesy switch signal/
ON or OFFON: Driver side door is open
OFF: Driver side door is closed
PNP SWPark/neutral position switch signal/
ON or OFFON: Shift lever in neutral position
OFF: Shift lever in any position except neutral
M2 SWSeat memory switch M2 signal/
ON or OFFON: Seat memory switch M2 is ON
OFF: Seat memory switch M2 is OFF
M1 SWSeat memory switch M1 signal/
ON or OFFON: Seat memory switch M1 is ON
OFF: Seat memory switch M1 is OFF
SET SWSeat memory set switch signal/
ON or OFFON: Memory set switch is ON
OFF: Memory set switch is OFF
SLIDE POSSeat sliding position/
MIN: ±4096, MAX: 4096Within range from ±4096 to 4096
RECLN POSSeatback position/
MIN: ±4096, MAX: 4096Within range from ±4096 to 4096
F VTCL POSSeat front vertical position/
MIN: ±4096 MAX: 4096Within range from ±4096 to 4096
LIFTER POSSeat lifter position/
MIN: ±4096 MAX: 4096Within range from ±4096 to 4096
MEM M1 SW
Driving position memorized with seat memory
switch M1/
MEM or NOT MEMMEM: Memorized
NOT MEM: Not memorized

DI±1512± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)
1706 Author: Date:
2005 SEQUOIA (RM1146U)MEM M2 SW
Driving position memorized with seat memory
switch M2/
MEM or NOT MEMMEM: Memorized
NOT MEM: Not memorized
SEAT MEM M1
Seat position memorized with seat memory
switch M1/
MEM or NOT MEMMEM: Memorized
NOT MEM: Not memorized
SEAT MEM M2
Seat position memorized with seat memory
switch M2/
MEM or NOT MEMMEM: Memorized
NOT MEM: Not memorized
D±MIRR MEM1
Driver side mirror position memorized with seat
memory switch M1/
MEM or NOT MEMMEM: Memorized
NOT MEM: Not memorized
D±MIRR MEM2
Driver side mirror position memorized with seat
memory switch M2/
MEM or NOT MEMMEM: Memorized
NOT MEM: Not memorized
P±MIRR MEM M1
Passenger side mirror position memorized with
seat memory switch M1/
MEM or NOT MEMMEM: Memorized
NOT MEM: Not memorized
P±MIRR MEM M2
Passenger side mirror position memorized with
seat memory switch M2/
MEM or NOT MEMMEM: Memorized
NOT MEM: Not memorized
SLIDE MEM POS 1
Seat sliding position memorized with seat
memory switch M1/
MIN: ±4096, MAX: 4096
Within range from ±4096 to 4096
RECLIN MEM POS 1
Seat back position memorized with seat memory
switch M1/
MIN: ±4096, MAX: 4096
Within range from ±4096 to 4096
F VTCL MEM POS 1
Front vertical position memorized with seat
memory switch M1/
MIN: ±4096, MAX: 4096
Within range from ±4096 to 4096
LIFTER MEM POS 1
Lifter position memorized with seat memory
switch M1/
MIN: ±4096, MAX: 4096
Within range from ±4096 to 4096
SLIDE MEM POS 2
Seat sliding position memorized with seat
memory switch M2/
MIN: ±4096, MAX: 4096
Within range from ±4096 to 4096
RECLIN MEM POS 2
Seatback position memorized with seat memory
switch M2/
MIN: ±4096, MAX: 4096
Within range from ±4096 to 4096
F VTCL MEM POS 2
Front vertical position memorized with seat
memory switch M2/
MIN: ±4096, MAX: 4096
Within range from ±4096 to 4096
LIFTER MEM POS 2
Lifter position memorized with seat memory
switch M2/
MIN: ±4096, MAX: 4096
Within range from ±4096 to 4096
D±MIRR MEM POS 1
Driver side mirror position memorized with seat
memory switch M1/
MIN: 0, MAX: 65535
Within range from 0 to 65535
P±MIRR MEM POS 1
Passenger side mirror position memorized with
seat memory switch. M1/
MIN: 0, MAX: 65535
Within range from 0 to 65535
D±MIRR MEM POS 2
Driver side mirror position memorized with seat
memory switch M2/
MIN: 0, MAX: 65535
Within range from 0 to 65535
P±MIRR MEM POS 2
Passenger side mirror position memorized with
seat memory switch M2/
MIN: 0, MAX: 65535
Within range from 0 to 65535