navigation system TOYOTA SEQUOIA 2001 Service Owner's Manual

I28687
Main AVC±LAN:
Sub AVC±LAN: Radio Receiver Assy (w/o Navigation System)
Radio and Navigation Assy (w/ Navigation System)
Disc
Player
Controller
(*2) (*1)(*2, 3)
Television
Display Assy (*2)
(*2)
(*2) Stereo
Component
AmplifierMulti±display
Controller (*2)
Rear Seat Audio
Controller (*3)
*1: Separate Type Amplifier
*2: w/ RSE System
*3: w/ RSA System
: AVC±LAN DI±2082
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2276 Author: Date:
2005 SEQUOIA (RM1146U)
3. COMMUNICATION SYSTEM
(a) This system has 2 kinds of AVC±LAN, Main AVC±LAN and Sub AVC±LAN.
(b) Multi±display controller sub±assy works as a master unit in the Sub AVC±LAN, but not in the Main
AVC±LAN.

DIDAZ±01
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2087
2281 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
TELEVISION DISPLAY ASSY
SymptomSuspect AreaSee page
Black screen.
1. Power source circuit (multi±display controller sub±assy)
2. Power source circuit (television display assy)
3. AVC±LAN circuitDI±2110
DI±2107
DI±2139
Display screen not stabilized (Synchronous error).
1. Power source circuit (television display assy)
2. Power source circuit (multi±display controller sub±assy)
3. Display signal circuit (multi±display controller sub±assy
± television display assy)
4. Television display assy
5. Multi±display controller sub±assyDI±2107
DI±2110
DI±2115
±
±
Color on display screen is unusual (RGB signal error).
1. Rear display color bar check of display check mode
2. Display signal circuit (multi±display controller sub±assy
± television display assy)
3. Television display assy
4. Multi±display controller sub±assyDI±2085
DI±2115
±
±
DISC PLAYER CONTROLLER
SymptomSuspect AreaSee page
Only DVD screen is not displayed or not stabilized.
1. Power source circuit (multi±display controller sub±assy)
2. Power source circuit (disc player controller)
3. Display signal circuit (multi±display controller sub±assy
± disc player controller)
4. Display signal circuit (multi±display controller sub±assy
± radio and navigation assy)
5. Disc player controller
6. Multi±display controller sub±assyDI±2110
DI±2112
DI±2117
DI±2119
±
±
Only DVD is not heard or the sound quality is poor.
1. Power source circuit (multi±display controller sub±assy)
2. Power source circuit (disc player controller)
3. Sound signal circuit (multi±display controller sub±assy ±
disc player controller)
4. w/o Navigation system:
Sound signal circuit (multi±display controller sub±assy ±
radio receiver assy)
w/ Navigation:
Sound signal circuit (multi±display controller sub±assy ±
radio and navigation assy)
5. Mute signal circuit
6. Multi±display controller sub±assy
7. Disc player controllerDI±2110
DI±2112
DI±2137
DI±2123
DI±2125
DI±2153
±
±
VTR TERMINAL
SymptomSuspect AreaSee page
Only display screen input from the external device is not stabi-
lized.
1. Power source circuit (multi±display controller sub±assy)
2. Power source circuit (television display assy)
3. Display signal circuit (multi±display controller sub±assy
± television display assy)
4. VTR terminal
5. Multi±display controller sub±assyDI±2110
DI±2107
DI±2115
±
±

± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2089
2283 Author: Date:
2005 SEQUOIA (RM1146U) Quality of sound from wireless headphone is poor or no sound
can be heard (radio sound only).
1. w/o Navigation System:
Sound signal circuit (multi±display controller sub±assy ±
radio receiver assy)
w/ Navigation System:
Sound signal circuit (multi±display controller sub±assy ±
radio and navigation assy)
2. Multi±display controller sub±assy
3. w/o Navigation System:
Radio receiver assy
4. w/ Navigation System:
Radio and navigation assy
DI±2123
DI±2125
±
±
±
Quality of sound from headphone connected is poor or no sound
can be heard (radio sound only).
1. w/o Navigation System:
Sound signal circuit (multi±display controller sub±assy ±
radio receiver assy)
w/ Navigation System:
Sound signal circuit (multi±display controller sub±assy ±
radio and navigation assy)
2. Multi±display controller sub±assy
3. w/o Navigation System:
Radio receiver assy
4. w/ Navigation System:
Radio and navigation assy
DI±2123
DI±2125
±
±
±
REMOTE CONTROL
SymptomSuspect AreaSee page
A remote control system does not operate.
1. A remote control system does not operate
2. Remote commander check of display check mode
3. Power source circuit (multi±display controller sub±assy)
4. Power source circuit (television display assy)
5. AVC±LAN circuitDI±2157
DI±2085
DI±2110
DI±2107
DI±2139

I28286
R25
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2093
2287 Author: Date:
2005 SEQUOIA (RM1146U)AUXR ± GND
(R21±12 ± R23±29)
BR ± YSound signalExternal device system is playing
(At that time of VTR jack use)
A waveform
synchronized
with sound is
output
R2 ± GND
(R21±13 ± R23±29)B ± YDisplay signal (Red)Display is on
(Television display assy)Pulse genera-
tion
G2 ± GND
(R21±14 ± R23±29)B ± YDisplay signal (Green)Display is on
(Television display assy)Pulse genera-
tion
B2 ± GND
(R21±15 ± R23±29)B ± YDisplay signal (Blue)Display is on
(Television display assy)Pulse genera-
tion
SYN2 ± GND
(R21±16 ± R23±29)B ± YDisplay signal
(Synchronize)Display is on
(Television display assy)Pulse genera-
tion
VR2 ± Body ground
(R21±17 ± Body ground)B ± Body groundGroundAlwaysBelow 1 V
VG2 ± Body ground
(R21±18 ± Body ground)Shielded ± Body groundGroundAlwaysBelow 1 V
SG6 ± Body ground
(R21±19 ± Body ground)Shielded ± Body groundGroundAlwaysBelow 1 V
HP2L ± GND
(R21±20 ± R23±29)BR ± YSound signal (Output)Audio system is playing (Head-
phone)
A waveform
synchronized
with sound is
output
HP2R ± GND
(R21±21 ± R23±29)BR ± YSound signal (Output)Audio system is playing (Head-
phone)
A waveform
synchronized
with sound is
output
SG6 ± Body ground
(R21±22 ± Body ground)Shielded ± Body groundGroundAlwaysBelow 1 V
SGN5 ± Body ground
(R21±23 ± Body ground)BR ± Body groundGroundAlwaysBelow 1 V
NTS4 ± GND
(R21±24 ± R23±29)BR ± YDisplay signalExternal device system displayed
(At that time of VTR jack use)Pulse genera-
tion
*1: w/ Navigation System
2. TELEVISION DISPLAY ASSY
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecification
GND ± Body ground
(R25±1 ± Body ground)Y ± Body groundGroundAlwaysBelow 1 V
SGND ± Body ground
(R25±2 ± Body ground)Shielded ± Body groundGroundAlwaysBelow 1 V

DIDB1±01
I28273
RSE system normal operation
Diagnosis start±up (w/ Navigation system: See page DI±2191)
Select ºMENUº and enter
ºDiagnosis MENUº using a
remote controller.
ºService Check Modeº
screen to section
(See page DI±2099) ºDisplay Checkº
screen to section
(See page DI±2085)Start±up of the diagnostics function for the ºaudio system
and TOYOTA navigation systemº is linked with the start±
up of the diagnostics function of the ºrear displayº.
(w/o Navigation system: See page DI±1974)
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.
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2097
2291 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSIS SYSTEM
DIAGNOSIS CHECK
HINT:
Diagnosis system mode is operated as follows.

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
±
±

I28667
Multi±display
Controller Sub±assy
NTS1
SGN1
SG3 R2321
R2320
R2319 R
G
(Shielded) Radio and Navigation Assy
BR
BR
(Shielded) R261
R264
R265 NTSC
SGD1
SGNDIF322
IF323
IF324
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2119
2313 Author: Date:
2005 SEQUOIA (RM1146U)
Display signal circuit (Multi±display sub±assy ± Radio and navi-
gation assy)
CIRCUIT DESCRIPTION
This is the display signal circuit from the multi±display controller sub±assy to the radio and navigation assy.
WIRING DIAGRAM
DIDB9±01

I28751
NTSC
R26
Radio and Navigation Assy:
SGNDSGD1
I28614NTS1R23
Multi±display Controller Sub±assy:
SGN1SG3
DI±2120
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2314 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check harness and connector (Multi±display controller sub±assy ± Radio and
navigation assy).
PREPARATION:
Disconnect the R26 and R23 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol (Tester connection)ConditionSpecified condition
NTS1 (R23±21) ± NTSC (R26±1)AlwaysBelow 1 W
SGN1 (R23±20) ± SGD1 (R26±4)AlwaysBelow 1 W
SG3 (R23±19) ± SGND (R26±5)AlwaysBelow 1 W
NTS1 (R23±21) ± Body groundAlways10 kW or higher
SGN1 (R23±20) ± Body groundAlways10 kW or higher
SG3 (R23±19) ± Body groundAlways10 kW or higher
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2087).

I28597
IF3
L+ R±
R+
L± 6
W
(Shielded)Multi±display
Controller Sub±assy
R2310
R239
R238
R237
R2311 W
W
W IF37
IF38
IF39
IF35
(Shielded) W
G
B
R CDL+ CDR± CDR+
CDL±R282
R283
R284
R285
R281
CSLDSG1 Radio and Navigation Assy
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2125
2319 Author: Date:
2005 SEQUOIA (RM1146U)
Sound signal circuit (From multi±display controller sub±assy to
radio and navigation assy)
CIRCUIT DESCRIPTION
This is the sound signal circuit from the multi±display controller sub±assy to the radio and navigation assy.
WIRING DIAGRAM
DIDBC±01

I28612
Radio and Navigation Assy
Wire Harness View:
R28
CDL+CDR±
CSLDCDL±
CDR+
I28614
R23
L+ SG1
R±L±
R+
Multi±display Controller Sub±assy:
DI±2126
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2320 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check harness and connector (Radio and navigation assy ± Multi±display con-
troller sub±assy).
PREPARATION:
Disconnect the R23 and R28 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol (Tester connection)ConditionSpecified condition
CDL+ (R28±4) ± L+ (R23±8)AlwaysBelow 1 W
CDL± (R28±5) ± L± (R23±7)AlwaysBelow 1 W
CDR+ (R28±2) ± R+ (R23±10)AlwaysBelow 1 W
CDR± (R28±3) ± R± (R23±9)AlwaysBelow 1 W
CSLD (R28±1) ± SG1 (R23±11)AlwaysBelow 1 W
CDL+ (R28±4) ± Body groundAlways10 kW or higher
CDL± (R28±5) ± Body groundAlways10 kW or higher
CDR+ (R28±2) ± Body groundAlways10 kW or higher
CDR± (R28±3) ± Body groundAlways10 kW or higher
CSLD (R28±1) ± Body groundAlways10 kW or higher
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2087).