2001 TOYOTA SEQUOIA seat memory

DIDB2±01
I28276
ºDiagnosis MENUº
to section
Recheck
History clearance
DTC memory clearance
DTC clear
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2099
2293 Author: Date:
2005 SEQUOIA (RM1146U)
CHECK MODE PROCEDURE
SERVICE CHECK MODE
HINT:
Service Check Mode is operated as follows.

I28277
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*2
*4*3*6
*5 *7
*8 *8
*8
DI±2100
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2294 Author: Date:
2005 SEQUOIA (RM1146U)
Service Check Mode
(1) Start the Diagnosis System (see page DI±2097).
Display ItemFunction
Components Name/*1
List of component names including op-
tional components (15 components
max.) are displayed. When the names
are not identified, their physical address-
es are displayed.
Check Result/*2Check results are displayed.
Memory Clear switch/*3
Pressing this switch for 3 sec. deletes all
the information about master component
registration.
DTC Clear switch/*4
Pressing this switch for 3 sec. deletes
diagnosis memory of all the components.
It deletes Service Check results and the
screen displaying the check results.
Recheck/*5Pressing this switch performs Service
Check again.
MENU/*6Pressing this switch activates the Diag-
nosis Menu screen.
LAN Monitor screen switch/*7
Pressing this switch activates the LAN
Monitor screen, which displays the log-
ical address 01 with DTC D0 ± FE.
Components:/*8
DisplayName
Rr±TVTelevision Display Assy
DVD±PDisc Player Controller
HINT:
Service Check displays the check results based on the informa-
tion obtained from each component's response to ºSystem
Check Executionº and ºDiagnosis Memory Requestº, and the
information of ºCurrent DTC Notificationº (the Unit Check that
will be displayed on the next screens.).

I28278
*1
*4*3
*2
*5*6
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2101
2295 Author: Date:
2005 SEQUOIA (RM1146U)
(2) Read Check Result
Check ResultMeaning
OKNo DTC is identified.
EXCHOne or more DTC requesting for exchange are detected.
CHEKOne or more DTC requesting for check are detected.
NCON
No connection response to Diagnosis System start±up,
whereas it has the connection response to the AVC±LAN
system when the power switch is turned on (when IG is
turned to ACC).
OldOne or more DTC are detected because of old version.
NRESNo response to the information about the Diagnosis System,
whereas it responds to the Diagnosis System start±up.
HINT:

After repair and check, press ºCode CLRº for more than
3 sec. to delete diagnosis memory.

After deleting diagnosis memory, press ºRecheckº and
make sure ºOKº is displayed on the screen.
(3) ºEXCHº, ºCHEKº and ºOldº can be used as switches
to activate Unit Check Modeº for detail information.
Check troubled parts of the components in these
modes by referring to the DTC code list.
Display ItemDescription
Components name/*1Names of components to be checked
are displayed.
DTC clear switch/*2
Pressing this switch for 3 sec. deletes
DTC memory of the selected diagnosis
component.
Service check mode screen switch/*3Pressing this returns to the Service
Check Mode screen.
Date/Time/*4
The date and time stamped at the time of
DTC occurrence are displayed in the or-
der of year±month±day±hour±minute±
second. (If the date and time data is in-
valid, it is displayed as a blank.)
Current/*5Up to 6 DTC codes detected during the
System Check are displayed.
Memory/*6DTC memories stored and current DTC
Notification are displayed.
HINT:

Detecting Unit DTC activates the Unit Check Mode on the
screen.

In the Unit Check Mode, DTC which is identified as
ºEHCKº in the Service Check is displayed as classified
into Current DTC and Past DTC.

I28279
I28280
*1
*4
*3
*2
*5*6
DI±2102
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2296 Author: Date:
2005 SEQUOIA (RM1146U)
(4) ºLAN Monitorº can be used as a switch to activate
ºLAN Monitorº for detail information. Check faulty
parts of the components in these modes by refer-
ring to the DTC code list.
Display ItemDescription
Components name/*1Names of components to be checked
are displayed.
Segment/*2Logical address codes corresponding to
DTC are displayed.
DTC/*3DTC is displayed.
Sub±Code (address numbers of related
components)/*4Physical address codes memorized to-
gether with DTC are displayed.
Sub±code (Connection confirmation
number) /*5Connection confirmation numbers mem-
orized together with DTC are displayed.
Sub±code (Number of occurrence) /*6The number of occurrence of the same
DTC is displayed.
HINT:

Detecting no LAN DTC activates the LAN Monitor on the
screen.

The LAN Monitor chooses and displays the LAN DTC out
of DTC of components identified as ºCHEKº in the LAN
Monitor.
(5) Read Check Result
Check ResultMeaning
OKNo DTC is identified.
CHEKOne or more DTC requesting for check are detected.
NCON
No connection response to Diagnosis System start±up,
whereas it has the connection response to the AVC±LAN
system when the power switch is turned on (when IG is
turned to ACC).
NRESNo response to the information about the Diagnosis System,
whereas it responds to the Diagnosis System start±up.
OldOne or more DTC are detected because of old version.
HINT:

After repairing and checking, press ºCode CLRº for more
than 3 sec. to delete diagnosis memory.

After deleting diagnosis memory, press ºRecheckº and
make sure ºOKº is displayed on the screen.

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.

BE±10
± BODY ELECTRICALTROUBLESHOOTING
3414 Author: Date:
2005 SEQUOIA (RM1146U) Some of the system does not operate.
(Taillight does not come on.)
1. TAIL Fuse
2. TAILLIGHT Relay
3. Light Control Switch
4. Wire Harness
5. Body ECUBE±14
BE±27
BE±27
±
±
Some of the system do not operate.
(Theft deterrent horn or vehicle horn does not sound.)
1. HORN Fuse
2. SECURITY HORN Fuse
3. HORN Relay Circuit
4. Theft Deterrent Horn Circuit
5. Horn
6. Body ECUBE±14
BE±14
BE±145
BE±92
BE±145
±
While the warning is given, the system cannot be canceled by
unlocking the door with a key or transmitter.
1. Door Key Lock and Unlock Switch Circuit (Driver Door
ECU)
Door Key Lock and Unlock Switch Circuit (Passenger
Door ECU)
Door Key Lock and Unlock Switch Circuit (Back Door
ECU)
2. Body ECUDI±1794
DI±1832
DI±1882
±
*1: w/ Glass breakage sensor
WIRELESS DOOR LOCK CONTROL SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
HINT:
Troubleshooting of the wireless door lock control system is based on the premise that the door lock
control system operates normally. Accordingly, before troubleshooting the wireless door lock control
system, first make certain that the door lock control system operates normally.
If the trouble still reappears even though there are no abnormalities in any of the other circuits, check
and replace the Wireless Door Lock Control Receiver as the last step.
SymptomSuspect AreaSee page
All functions of wireless door lock control system do not operate.
1. Transmitter
2. Wireless Door Lock Control Receiver Circuit
3. Body ECUBE±98
DI±1737
±
Wireless door lock operates, but the buzzer does not sound.
(The buzzer does not sound when the customize function prohib-
its.)1. Wireless Door Lock Buzzer Circuit
2. Body ECUDI±1741
±
POWER SEAT CONTROL SYSTEM (w/o Driving Position Memory)
SymptomSuspect AreaSee page
Both Driver and Passenger Power seats do not operate.1. PWR SEAT Fuse
2. Wire HarnessBE±14
±
Driver's seat does not operate.1. Power Seat Switch (D)
2. Wire HarnessBE±109
±
Passenger's seat does not operate.1. Power Seat Switch (P)
2. Wire HarnessBE±109
±
ºSlide operationº does not operate.
1. Power Seat Switch (D, P)
2. Slide Motor (D, P)
3. Wire HarnessBE±109
BE±109
±
ºFront Vertical Operationº does not operate.
1. Power Seat Switch (D)
2. Front Vertical Motor (D)
3. Wire HarnessBE±109
BE±109
±
ºLifter Operationº does not operate.
1. Power Seat Switch (D)
2. Lifter Motor (D)
3. Wire HarnessBE±109
BE±109
±

± BODY ELECTRICALTROUBLESHOOTING
BE±11
3415 Author: Date:
2005 SEQUOIA (RM1146U) ºReclining Operationº does not operate.
1. Power Seat Switch (D, P)
2. Reclining Motor (D, P)
3. Wire HarnessBE±109
BE±109
±
ºLumbar Support Operationº does not operate.
1. Power Seat Switch (D)
2. Lumbar Support Motor (D)
3. Wire HarnessBE±109
BE±109
±
(D): Driver's Seat
(P): Passenger's Seat
POWER SEAT CONTROL SYSTEM (w/ Driving Position Memory)
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspected AreaSee Page
Power seat control system abnormal operation.See DIAGNOSIS SYSTEMDI±1505
POWER MIRROR CONTROL SYSTEM (w/o Driving Position Memory)
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspect AreaSee page
Mirror does not operate.1. Mirror Switch
2. Wire HarnessBE±115
±
Mirror operates abnormally.
1. Mirror Switch
2. Mirror Motor
3. Wire HarnessBE±115
BE±115
±
POWER MIRROR CONTROL SYSTEM (w/ Driving Position Memory)
SymptomSuspect AreaSee page
Remote control mirror LH only does not operate.
(w/ Driving position memory)1. Remote control mirror motor LH circuit
2. Remote control mirror position sensor LH circuit
3. Driver door ECUDI±1808
DI±1810
±
Remote control mirror RH only does not operate.
(w/ Driving position memory)1. Remote control mirror motor RH circuit
2. Remote control mirror position sensor RH circuit
3. Passenger door ECUDI±1845
DI±1847
±
ELECTRO CHROMIC MIRROR SYSTEM
SymptomSuspect AreaSee page
Electro Chromic Inner Mirror does not operate.
1. ECU±IG Fuse
2. Electro Chromic Inner Mirror
3. Wire HarnessBE±14
BE±122
±
SEAT HEATER SYSTEM
SymptomSuspect AreaSee page
Seat heaters do not operate.
(Driver's and Passenger's)
1. SEAT HTR Fuse
2. Seat Heater Switch (D, P)
3. Seat Heater
4. Wire HarnessBE±14
BE±124
BE±124
±
Driver's seat heater does not operate.1. Seat Heater Switch (D, P)
2. Wire HarnessBE±124
±
Passenger's seat heater does not operate.1. Seat Heater Switch (D, P)
2. Wire HarnessBE±124
±
Seat heater temperature is too hot.Seat HeaterBE±124
AUDIO SYSTEM
SymptomSuspect AreaSee page
Audio system abnormal operation.See DIAGNOSIS SYSTEMDI±1962

BE268±04
I08215
Lifter
Up
Down
Reclining Tilt
Up
Down
Front BackForward
Rear
I18601
Forward
FrontRear
Back
± BODY ELECTRICALPOWER SEAT CONTROL SYSTEM
BE±109
3513 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT DRIVER'S POWER SEAT SWITCH CONTI-
NUITY (w/o Driving Position Memory)
Slide Switch:
Switch positionTester connectionSpecified condition
FRONT1 ± 9, 4 ± 6Continuity
OFF4 ± 6 ± 9Continuity
BACK1 ± 6, 4 ± 9Continuity
Front Tilt Switch:
Switch positionTester connectionSpecified condition
UP1 ± 10, 4 ± 5Continuity
OFF4 ± 5 ± 10Continuity
DOWN1 ± 5, 4 ± 10Continuity
Rear Lifter Switch:
Switch positionTester connectionSpecified condition
UP1 ± 7, 4 ± 8Continuity
OFF4 ± 7 ± 8Continuity
DOWN1 ± 8, 4 ± 7Continuity
Reclining Switch:
Switch positionTester connectionSpecified condition
FORWARD1 ± 3, 2 ± 4Continuity
OFF2 ± 3 ± 4Continuity
REAR1 ± 2, 3 ± 4Continuity
If continuity is not as specified, replace the switch.
2. INSPECT PASSENGER'S POWER SEAT SWITCH
CONTINUITY
Slide Switch:
Switch positionTester connectionSpecified condition
FRONT1 ± 9, 4 ± 6Continuity
OFF4 ± 6 ± 9Continuity
BACK1 ± 6, 4 ± 9Continuity
Reclining Switch:
Switch positionTester connectionSpecified condition
FORWARD1 ± 3, 2 ± 4Continuity
OFF2 ± 3 ± 4Continuity
REAR1 ± 2, 3 ± 4Continuity
If continuity is not as specified, replace the switch.