engine TOYOTA SEQUOIA 2001 Service Repair Manual

DIDAT±01
I27728
Radio and Navigation Assy (*1)
Radio Receiver Assy (*2)
Rear Door
SpeakerSteering Pad Switch
Instrument Panel J/B

RAD NO. 2 Fuse

ECU±B Fuse

AM1 FuseEngine Room J/B

RAD NO. 1 Fuse

RAD NO. 3 Fuse
Ignition Switch
Headphone
Terminal
Front Door
Speaker and
Woofer
Stereo Component Amplifier
Multi±display
Controller
Sub±assy
*1: w/ Navigation System
*2: w/o Navigation SystemVTR TerminalDisc Player
Controller
Rear Door
Speaker
Front Door
Speaker and
Woofer
Tweeter
Television Display Assy
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2079
2273 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION

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
±
±

DI±2104
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2298 Author: Date:
2005 SEQUOIA (RM1146U)DC
*4
Transmission Error
Transmission to component shown by sub±code
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.
±
DE
*3Slave Reset (Momentary Inter-
ruption)After engine start, slave component has been dis-
connected.
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
±
±
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.
±
2. Television display assy (Physical address: 1B0) [Rr±TV]
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 may be stored when the engine key is turned again in 1 minute after the engine start.

*3: This code may be stored when the engine key is turned again after the engine start.

*4: The code is stored 210 seconds after the power supply connector of the master component is dis-
connected with the ignition switch in the ACC or ON position.
(a) Logical address: 01 (Communication control)
DTCNameDiagnosisVerificationSee page
22RAM ErrorAbnormal condition of RAM is detected.Replace television display assy±
D6
*1Absence of Master
Component in which this code is recorded was
disconnected from system with the ignition switch
in the ACC or ON position. Or, when this code
was recorded, multi±display controller sub±assy
was disconnected.
1. Power source circuit (Television
display assy).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace television display assy.
5. Replace Multi±display controller
sub±assy.DI±2107
DI±2110
DI±2139
±
±
D7
*4Communication Check Error
Component in which this code is recorded is or
was disconnected from system after engine start.
Or, when recording this code, multi±display con-
troller sub±assy was disconnected.
1. Power source circuit (Television
display assy).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace television display assy.
5. Replace Multi±display controller
sub±assy.DI±2107
DI±2110
DI±2139
±
±
DC
*2Transmission Error
Transmission to component shown by sub±code
failed.
(Detecting this DTC does not necessarily mean
actual failure.)If the same sub±code is recorded in
other components, check harness
for power supply and communica-
tion system of all components
shown by code.
±

± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2105
2299 Author: Date:
2005 SEQUOIA (RM1146U)DD
*3
Master Reset (Momentary Inter-
ruption)After engine start, multi±display controller sub±
assy was disconnected from system.
1. Power source circuit (Television
display assy).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace television display assy.
5. Replace Multi±display controller
sub±assy.DI±2107
DI±2110
DI±2139
±
±
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 (Television
display assy).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace television display assy.
5. Replace Multi±display controller
sub±assy.DI±2107
DI±2110
DI±2139
±
±
E0
*1Registration Completion
Instruction ErrorºRegistration Completion Instructionº command
from master cannot be received.Since this DTC is provided for engi-
neering purposes, it may be de-
tected when no actual failure exists.
±
E2ON/OFF Instruction Parameter
ErrorError occurs in ON/OFF controlling command
from multi±display controller sub±assy.Replace multi±display controller
sub±assy.±
E3
*1Registration Request Transmis-
sion

Registration Request command is output from
slave component.

Registration Connection Check Instruction, Reg-
istration Request command is output from sub±
master component.
Since this DTC is provided for engi-
neering purposes, it may be de-
tected when no actual failure exists.
±
E4
*1Multiple Frame AbortMultiple frame transmission is aborted.
Since this DTC is provided for engi-
neering purposes, it may be de-
tected when no actual failure exists.
±
3. Disc player controller (Physical address: 1A0) [DVD±P]
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 may be stored when the engine key is turned again 1 min. after the engine starts.

*3: This code may be stored when the engine key is turned again after the engine starts.

*4: When 210 sec. have passed after pulling out the power supply connector of the master component
with the ignition switch in ACC or ON, this code is stored.
(a) Logical address: 01 (Communication control)
DTCNameDiagnosisVerificationSee page
22RAM ErrorAbnormal condition of RAM is detected.Replace disc player controller±
D6
*1Absence of Master
Component in which this code is recorded was
disconnected from system with the ignition switch
in the ACC or ON position. Or, when this code
was recorded, multi±display controller sub±assy
was disconnected.
1. Power source circuit (Disc play-
er controller).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace disc player controller.
5. Replace Multi±display controller
sub±assy.DI±2112
DI±2110
DI±2139
±
±

DI±2106
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2300 Author: Date:
2005 SEQUOIA (RM1146U)D7
Communication Check Error
Component in which this code is recorded is or
was disconnected from system after engine start.
Or, when recording this code, multi±display con-
troller sub±assy was disconnected.
1. Power source circuit (Disc play-
er controller).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace disc player controller.
5. Replace Multi±display controller
sub±assy.DI±2112
DI±2110
DI±2139
±
±
DC
*2Transmission Error
Transmission to component shown by sub±code
has been failed.
(Detecting this DTC does not necessarily mean
actual failure.)If same sub±code is recorded in
other components, check harness
for power supply and communica-
tion system of all components
shown by code
±
DD
*3Master Reset (Momentary Inter-
ruption)After engine start, radio and player assembly was
disconnected from system.
1. Power source circuit (Disc play-
er controller).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace disc player controller.
5. Replace Multi±display controller
sub±assy.DI±2112
DI±2110
DI±2139
±
±
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 (Disc play-
er controller).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN circuit.
4. Replace disc player controller.
5. Replace Multi±display controller
sub±assy.DI±2112
DI±2110
DI±2139
±
±
E0
*1Registration Completion
Instruction ErrorºRegistration Completion Instructionº command
from master cannot be received.Since this DTC is provided for engi-
neering purpose, it may be detected
when no actual failure exists
±
E2ON/OFF Instruction Parameter
ErrorError occurs in ON/OFF controlling command
from disc player controller.Replace disc player controller±
E3
*1Registration Request Transmis-
sion

Registration Request command is output from
slave component.

Registration Connection Check Instruction, Reg-
istration Request command is output from sub±
master component.
Since this DTC is provided for engi-
neering purpose, it may be detected
when no actual failure exists
±
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
±
(b) Logical address: 44 (DVD)
DTCNameDiagnosisVerificationSee page
42No Disc ReadoutDisc cannot be read.Inspect disc±
44DVD ErrorError is detected in disc player controller.Replace disc player controller±
45EJECT ErrorDisc cannot be ejected.Replace disc player controller±
46Disc CrackA crack and dirt are in a disc.Replace disc player controller±
52Player ErrorClamp unusually generating.Replace disc player controller±

I28486
J/C Sub J/B No.3
R2332 Multi±display Controller Sub±assy
ACC
R2316
+B1
R2329
GND IF3
1
IFC
4 3A36
ACC
Cut Relay
B 1
I18
Ignition SW12
12 3A W±R
W±R
1To ECM
IA126
L±R L±R
2D1
2C8Engine Room J/B
RAD No. 1
ECU±BShort Pin 3
W±L2
W±R 1C
3
1E 1J
W
IL1
IC6AM1
8
F10
FL Block
ALT
54
B
Battery
IM13
LG GR GR
L±Y GR
2 2 Engine Room R/B No. 2
Y
IF33
W±B 3AW±R
1
IF3
22B
P
3
ACCAM1
BB 1 2 W±LB±O
J37 J38
L±YY
RAD No. 2 1Instrument Panel J/B
2
1RSE
2C P DI±2110
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2304 Author: Date:
2005 SEQUOIA (RM1146U)
Power source circuit (Multi±display controller sub±assy)
CIRCUIT DESCRIPTION
This circuit provides power to the multi±display controller sub±assy.
WIRING DIAGRAM
DIDB5±01

DIDBP±01
I27727
Instrument Panel J/B

RAD NO. 2 Fuse

ECU±B Fuse

AM1 FuseEngine Room J/B

RAD NO. 1 Fuse

RAD NO. 3 Fuse
Steering Pad
Switch
Ignition SwitchDisc Player
Controller
(*1)
Stereo
Component
Amplifier
Multi±display
Controller (*1)
VTR
Terminal
(*1)Headphone
Terminal
(*1) (*2)
Radio and
Navigation Assy GPS Antenna
TweeterTelevision Display Assy (*1)
Rear Seat Audio
Controller Assy (*2)
Rear Door SpeakerRear Door Speaker
Front Door Speaker
and Woofer
Front Door Speaker
and Woofer
*1: w/ RSE System
*2: w/ RSA System
DI±2160
± DIAGNOSTICSNAVIGATION SYSTEM
2354 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION

DIDBR±01
I28195
I28196
I28197
DI±2162
± DIAGNOSTICSNAVIGATION SYSTEM
2356 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DESCRIPTION
1. SYSTEM NORMAL CONDITION CHECK
(a) If the symptom is applicable to any of the following, it is intended behavior, and not a malfunction.
SymptomAnswer
A longer route than expected is chosen.Depending on the road conditions, the navigation ECU may determine that a longer
route is quicker.
Even when distance priority is high, the shortest route is not
shown.Some paths may not be advised due to safety concerns.
When the vehicle is put into motion immediately after the
engine starts, the navigation system deviates from the actu-
al position.If the vehicle starts before the navigation system activates, the system may not
react.
When running on certain types of roads, especially new
roads, the vehicle position deviates from the actual position.When the vehicle is driving on new roads not available on the map disc, the system
attempts to match it to another nearby road, causing the position mark to deviate.
(b) The following symptoms are not a malfunction, but are
caused by errors inherent in the GPS, gyro sensor, speed
sensor, and navigation ECU.
(1) The current position mark may be displayed on a
nearby parallel road.
(2) Immediately after a fork in the road, the current ve-
hicle position mark may be displayed on the wrong
road.
(3) When the vehicle turns right or left at an intersec-
tion, the current vehicle position mark may be dis-
played on a nearby parallel road.

DIDC5±01
I28205
I28206
Upper Left
Lower Left
I28207
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2191
2385 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSIS SYSTEM
HINT:

Illustrations may differ from the actual vehicle depending on the device settings and options. There-
fore, some detailed areas may not be shown exactly the same as on the actual vehicle.

After the ignition switch is turned on, check that the map is displayed before starting the diagnostic
mode. Otherwise, some items cannot be checked.
1. There are 2 methods to start diagnostic mode. Start the mode by using one of them.
2. Method 1
(a) Start the engine.
(b) While pressing and holding ºINFOº switch, operate the
light control switch, OFF " TAIL " OFF " TAIL " OFF
" TAIL " OFF.
(c) The diagnostic mode starts and the service check screen
(ºSystem Check Modeº) will be displayed. Service inspec-
tion starts automatically and the result will be displayed.
3. Method 2
(a) Start the engine.
(b) Switch to the ºDisplay quality adjustmentº screen.
(c) From the display quality adjustment screen, touch the
corners of the screen in the following order: upper left "
lower left "upper left " lower left " upper left " lower
left.
(d) The diagnostic mode starts and ºService Checkº screen
will be displayed. Service inspection starts automatically
and the result will be displayed.
4. Diagnosis MENU
(a) Diagnostic screen will be displayed by pressing the menu
switch on the service check screen.

DIDC7±01
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2203
2397 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSTIC TROUBLE CODE CHART
TermsDescription
Physical address
3±digit, hexadecimal code assigned to all components connected to the AVC±LAN.
Individual symbols are specified based on function. Units whose names are un-
known or relevant units are displayed with physical addresses.
Logical address2±digit, hexadecimal code assigned to all the functions in the AVC±LAN system.
HINT:
Titles for each unit are stated in the following order: parts name (physical address) [Name indicated by DTC]
1. Radio and navigation assy (physical address: 140) [AVN]
(a) Logical address: 01 (Communication control)
HINT:
Methods used to verify the cause of the problem are listed in order of probability in the verification column.
DTCNameDiagnosisVerificationSee page
D5
*1
*5Absence of registration unit
A device that the sub code shows is (was) dis-
connected from the system when turning the igni-
tion switch to the ACC or ON position.
The communication condition with the device that
the code shows cannot be obtained when the en-
gine starts.
1. Power source circuit (Stereo
component amplifier assy).
2. Power source circuit (Rear seat
audio controller). *6
3. Power source circuit (Multi±dis-
play controller sub±assy). *7
4. AVC±LAN circuit (Radio and
navigation assy ± Stereo compo-
nent amplifier assy).
5. AVC±LAN (Radio and navigation
assy ± Rear seat audio control-
ler). *6
6. AVC±LAN (Radio and navigation
assy ± Multi±display controller
sub±assy). *7
7. Replace stereo component am-
plifier assy.
8. Replace rear seat audio control-
ler. *6
9. Replace multi±display controller
sub±assy. *7DI±2258
DI±2058
DI±2110
DI±2268
DI±2061
DI±2139
±
±
±
D8
*2
*5No response to connection
checkThe device indicated by the sub code is (was)
disconnected from the system after engine start.
1. Power source circuit (Stereo
component amplifier assy).
2. Power source circuit (Rear seat
audio controller). *6
3. Power source circuit (Multi±dis-
play controller sub±assy). *7
4. AVC±LAN circuit (Radio and
navigation assy ± Stereo compo-
nent amplifier assy).
5. AVC±LAN (Radio and navigation
assy ± Rear seat audio control-
ler). *6
6. AVC±LAN (Radio and navigation
assy ± Multi±display controller
sub±assy). *7
7. Replace stereo component am-
plifier assy.
8. Replace rear seat audio control-
ler. *6
9. Replace multi±display controller
sub±assy. *7DI±2258
DI±2058
DI±2110
DI±2268
DI±2061
DI±2139
±
±
±