2001 TOYOTA SEQUOIA Back Seat

DIDAS±01
DI±2078
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2272 Author: Date:
2005 SEQUOIA (RM1146U)
REAR SEAT ENTERTAINMANT 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

DIDB3±01
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2103
2297 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSTIC TROUBLE CODE CHART
TermsMeaning
Physical addressThree±digit code (shown in hexadecimal) which is given to each component com-
prising the AVC±LAN.
Corresponding to the function, individual symbols are specified.
Logical addressTwo±digit code (shown in hexadecimal) which is given to each function comprising
the inner system of the AVC±LAN.
HINT:
DTC of the device which is directly connected via AVC±LAN, is displayed on the ºaudio system or navigation
systemº and the ºtelevision display assyº respectively.
Titles for each unit are stated in the following order: parts name (physical address) [Name indicated by DTC]
1. MULTI±DISPLAY CONTROLLER SUB±ASSY (Physical address: 16C, 16D) [RSE±ECU]
HINT:

*1: Even if no failure is detected, this code may be stored depending on the battery condition or voltage
for starting the engine.

*2: This code is stored 180 seconds after the power supply connector is disconnected after engine
start.

*3: This code may be stored when the engine key is turned back to the ON position and then turned
again to the START position after engine start.

*4: This code may be stored when the engine key is turned back to the ON position and then turned
again to the START position in 1 minute after engine start.
(a) Logical address: 01 (Communication control)
DTCNameDiagnosisVerificationSee page
D8
*2No Response To Connection
CheckComponent shown by sub±code is or had been
disconnected from system after engine start.
1. Power source circuit (Television
display assy).
2. Power source circuit (Disc play-
er controller).
3. AVC±LAN circuit.
4. Replace television display assy.
5. Replace disc player controller.DI±2107
DI±2112
DI±2139
±
±
D9
*1Last Mode Error
Component operated (sound and/or image was
provided) before engine stop is or was discon-
nected with ignition switch in the ACC or ON posi-
tion.
1. Power source circuit (Television
display assy).
2. Power source circuit (Disc play-
er controller).
3. AVC±LAN circuit
4. Replace television display assy.
5. Replace disc player controller.DI±2107
DI±2112
DI±2139
±
±
DANo Response to ON/OFF
Instruction
No response is identified when changing mode
(audio and visual mode change).
Detected when sound and picture do not change
by button operation.
1. Power source circuit (Television
display assy).
2. Power source circuit (Disc play-
er controller).
3. AVC±LAN circuit
4. Replace television display assy.
5. Replace disc player controller.DI±2107
DI±2112
DI±2139
±
±
DB
*1Mode Status ErrorDual alarm is detected.
1. Power source circuit (Television
display assy).
2. Power source circuit (Disc play-
er controller).
3. AVC±LAN circuit
4. Replace television display assy.
5. Replace disc player controller.DI±2107
DI±2112
DI±2139
±
±

I28687
Main AVC±LAN:
(*1, 2) Multi±display Controller
Sub±assy (*1)
 Rear Seat Audio
Controller (*2) Radio and Navigation Assy Stereo Component
Amplifier Assy
Sub AVC±LAN:
Disc Player
Controller (*1) Television Display Assy (*1)
*1 w/ RSE
*2: w/ RSA
: AVC±LAN DI±2170
± DIAGNOSTICSNAVIGATION SYSTEM
2364 Author: Date:
2005 SEQUOIA (RM1146U)
6. AVC±LAN Description
(a) What is AVC±LAN?
AVC±LAN, an abbreviation for ºAudio Visual Communication Local Area Networkº, is a united standard
developed by the manufacturers in affiliation with Toyota Motor Corporation. This standard pertains
to audio and visual signals as well as switch and communication signals.
(b) Purpose:
Recently, car audio systems have rapidly developed and the functions vastly changed. The conven-
tional car audio system is being integrated with multi±media interfaces similar to those in navigation
systems. At the same time, customers are demanding higher quality from their audio systems. This
is merely an overview of the standardization background. The specific purposes are as follows.
(1) To solve sound problems, etc. caused by using components of different manufacturers through
signal standardization.
(2) To allow each manufacturer to concentrate on developing products they do best. From this, rea-
sonably priced products can be produced.

DI±2210
± DIAGNOSTICSNAVIGATION SYSTEM
2404 Author: Date:
2005 SEQUOIA (RM1146U)DC
*1
*3
Transmission Error
Transmission to component shown by sub±code
has been failed.
(This code does not necessarily mean actual fail-
ure.)If same sub±code is recorded in
other component(s), check harness
for power supply and communica-
tion system of all components
shown by code.
±
DD
*4Master Reset (Momentary Inter-
ruption)Component that is to be master has been discon-
nected after engine start.
1. Power source circuit (radio and
navigation assy).
2. AVC±LAN (Radio and navigation
assy ± Multi±display controller
sub±assy).
3. Replace Multi±display controller
sub±assy.DI±2256
DI±2139
±
E0
*1Registration Completion
Instruction ErrorºRegistration Completion Instructionº command
from master cannot be received.Since this DTC is provided for engi-
neering, it may be detected when no
actual failure exists.
±
E3
*1Registration Request Transmis-
sion

Registration Request command is output from
slave component.

Registration Request command is output from
sub±master component.Since this DTC is provided for engi-
neering, it may be detected when no
actual failure exists.
±
DF
*4Master Error
Due to defective condition of component with a
display, master function is switched to audio
equipment.
Error occurs in communication between sub±
master (audio) and master component.
1. Power source circuit (radio and
navigation assy).
2. AVC±LAN (Radio and navigation
assy ± Multi±display controller
sub±assy).
3. Replace Multi±display controller
sub±assy.DI±2256
DI±2139
±
E4
*1Multiple Frame AbortMultiple frame transmission is aborted.
Since this DTC is provided for engi-
neering purpose, it may be detected
when no actual failure exists.
±
HINT:

*1: Even if no failure is detected, this code may be stored depending on the battery condition or voltage
for starting an engine.

*2: This code is stored when 210 sec. has passed after the power supply connector is pulled out after
engine start.

*3: This code may be stored when the engine key is turned back to the ON position and then turned
again to the START position in 1 minute after engine start.

*4: This code may be stored when the engine key is turned back to the ON position and then turned
again to the START position after engine start.
4. Rear seat audio controller (Physical address: 1F4) [RSA]
(a) Logical address: 01 (Communication control)
DTCNameDiagnosisVerificationSee page
D6
*1Absence of Master
Component in which this code is recorded has
been disconnected from system with ignition in
ACC or ON. Or, when this code was recorded,
RSA panel was disconnected.
1. Power source circuit (radio and
navigation assy).
2. AVC±LAN (Radio and navigation
assy ± Rear seat audio control-
ler).
3. Replace Rear seat audio control-
ler.DI±2256
DI±2061
±

RS0B6±09
± SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS±1
3284 Author: Date:
2005 SEQUOIA (RM1146U)
SRS AIRBAG
PRECAUTION
CAUTION:

The vehicle is equipped with SRS, which consists of a driver airbag, front passenger airbag,
side airbag and curtain shield airbag. Failure to carry out service operations in the correct se-
quence could cause the SRS to unexpectedly deploy during servicing, possibly leading to a
serious accident. Further, if a mistake is made in servicing the SRS, it is possible that the SRS
may fail to operate when required. Before performing servicing (including removal or installa-
tion of parts, inspection or replacement), be sure to read the following items carefully, then fol-
low the correct procedures indicated in the repair manual.

Wait at least 90 seconds after the ignition switch is turned to the ºLOCKº position and the nega-
tive (±) terminal cable is disconnected from the battery.
(The SRS is equipped with a back±up power source, so that if work is started within 90 seconds
after disconnecting the negative (±) terminal cable of the battery, the SRS may be deployed.)

Do not expose the steering wheel pad, front passenger airbag assembly, side airbag assembly,
curtain shield airbag assembly, airbag sensor assembly, front airbag sensor, side airbag sen-
sor assembly, curtain shield airbag sensor assembly, seat position sensor assembly or occu-
pant classification ECU directly to hot air or flames.

Be sure to perform the initialization of the occupant classification ECU if any of the following
conditions occur (see page DI±1128). If the initialization is not performed, the SRS may not oper-
ate properly.

The occupant classification ECU is replaced.

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

The passenger seat is removed from the vehicle, and then reinstalled or replaced.

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

The vehicle is brought to the workshop for repair due to an accident or collision.
NOTICE:

Malfunction symptoms of the SRS are difficult to confirm, so DTCs are the most important
source of information when troubleshooting. When troubleshooting the SRS, always inspect
DTCs before disconnecting the battery.

Even in the case of a minor collision when the SRS does not deploy, the steering wheel pad,
front passenger airbag assembly, side airbag assembly, curtain shield airbag assembly, airbag
sensor assembly, front airbag sensor, side airbag sensor assembly, curtain shield airbag sen-
sor assembly, seat position sensor assembly and occupant classification ECU should be in-
spected. (see page RS±22, RS±35, RS±49, RS±64, RS±72, RS±83, RS±88, RS±93, RS±98,
RS±106 and RS±112).

Before repair work, remove the airbag sensor if any kind of shock is likely to occur to the airbag
sensor during the operation.

Never use SRS parts from another vehicle. When replacing the parts, replace them with new
ones.

Never disassemble or repair the steering wheel pad, front passenger airbag assembly, side air-
bag assembly, curtain shield airbag assembly, airbag sensor assembly, front airbag sensor,
side airbag sensor assembly, curtain shield airbag sensor assembly, seat position sensor as-
sembly or occupant classification ECU in order to reuse it.

RS±2
± SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
3285 Author: Date:
2005 SEQUOIA (RM1146U)

If the steering wheel pad, front passenger airbag assembly, side airbag assembly, curtain
shield airbag assembly, airbag sensor assembly, front airbag sensor, side airbag sensor as-
sembly, curtain shield airbag sensor assembly, seat position sensor assembly or occupant
classification ECU has been dropped, or if there are any cracks, dents or other defects in the
case, bracket or connector, replace it with a new one.

Use a volt/ohmmeter with high impedance (10 kW/V minimum) for troubleshooting the electrical
circuits.

Information labels are attached to the periphery of the SRS components. Follow the instruc-
tions in the caution.

After work on the SRS is completed, perform the SRS warning light check (see page DI±1137).

When the negative (±) terminal cable is disconnected from the battery, the memory will be
cleared. Because of this, be sure to make a record of the contents memorized in each system
before starting work. When work is finished, adjust each system as it was before. Never use
a back±up power supply from outside the vehicle to avoid erasing the memory in any system.

RS116±01
H24695
H23918Spiral Cable
H16182
± SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS±3
3286 Author: Date:
2005 SEQUOIA (RM1146U)
OPERATION
CAUTION:
Be sure to perform the initialization of the occupant classi-
fication ECU if any of the following conditions occur (see
page DI±1128). If the initialization is not performed, the SRS
may not operate properly.

The occupant classification ECU is replaced.

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

The passenger seat is removed from the vehicle, and
then reinstalled or replaced.

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

The vehicle is brought to the workshop for repair due
to an accident or collision.
1. STEERING WHEEL PAD
The inflator and bag of the SRS are stored in the steering wheel
pad and cannot be disassembled. The inflator contains a squib,
igniter charge, and gas generator, etc., and inflates the bag
when instructed by the airbag sensor assembly. The steering
wheel pad cannot be disassembled.
2. SPIRAL CABLE
A spiral cable is used as an electrical joint from the vehicle body
side to the steering wheel. The spiral cable cannot be disas-
sembled.
3. FRONT PASSENGER AIRBAG ASSEMBLY
The inflator and bag of the SRS are stored in the front passen-
ger airbag assembly and cannot be disassembled. The inflator
contains a squib, igniter charge, gas generator, etc., and in-
flates the bag when instructed by the airbag sensor assembly.
The front passenger airbag assembly cannot be disassembled.

RS0T9±06
H23932
37 (377, 27)
37 (377, 27)
37 (377, 27)
37 (377, 27)
37 (377, 27)
42 (428, 31)
N´m (kgf´cm, ft´lbf) : Specified torque
Non±reusable part
Seat Cushion Outer Shield
Slide KnobReclining Knob Lumbar Switch Power Seat Switch
Seat Cushion Lower ShieldSeat Position Sensor Seat Cushion Inner Shield
Driver's seat:
Torx) Screw
Seat Position
Sensor Protector
Driver's seat:
Hog Ring

Front Seat Inner BeltHeadrest Support
Seat Frame Assembly Seatback CoverSeatback Pad
Spacer
Seat Track Cover Seat Track CoverArmrest Assembly Armrest CapArmrest SpacerArmrest Lock Plate
Headrest
8.0 (82, 72 in.´lbf)
w/ Side Airbag:
5.5 (56, 49 in.´lbf)
± SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG ASSEMBLY (Power Adjuster Type)
RS±45
3328 Author: Date:
2005 SEQUOIA (RM1146U)
SIDE AIRBAG ASSEMBLY (Power Adjuster Type)
COMPONENTS