2001 TOYOTA SEQUOIA Page 18

± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
DI±2077
2271 Author: Date:
2005 SEQUOIA (RM1146U)
3 Clean the infrared ray emitted portion.
CHECK:
(a) Clean the infrared ray emitting portion on the rear seat audio controller.
(b) Check whether the same malfunction occurs.
OK:
The function returns to normal.
OK End.
NG
4 Replace switch assy.
CHECK:
Replace the switch assy and check if it operates normally.
OK:
Normal operation.
OK End.
NG
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2050).

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

DIDAW±01
Vehicle brought into a workshop
4. Check the diagnostic trouble codes
DTC is not output (Go to step 6)
5. Diagnostic trouble code chart.
Go to step 7
7. Circuit inspection and part inspection
10. Perform confirmation test
ENDItems inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the pages for detailed explanations.
P. DI±2097
P. DI±2107 ± DI±2157 P. DI±2103 1. Customer problem analysis
P. DI±2084
2. Problem Symptom Confirmation
Symptom does
not occur
Malfunction
code
6. Problem symptoms table
P. DI±2087
8. Identification of problem
Symptom occursGo to step 4
3. Symptom Simulation
P. IN±24
9. Repair or replace
Normal system
code
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2083
2277 Author: Date:
2005 SEQUOIA (RM1146U)
HOW TO PROCEED WITH TROUBLESHOOTING

I28282
*2 *1
I28283
The entire screen is
changed to the color
which is selected in
the color bar check
mode.
Press ENTER
on remote
control Select color by
remote control
operation
I28284
DI±2086
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2280 Author: Date:
2005 SEQUOIA (RM1146U)
(a) Display Check Mode
DisplayContents
Color Bar Check/*1Color display is checked.
Remote Commander/*2Operating condition of remote command-
er display is checked.
HINT:
In Display Check Mode, above checks can be performed.
(b) Display Color Bar Check
(1) Start the Diagnosis System (See page DI±2097).
(2) Select ºMENUº.
(3) Select ºDisplay Checkº.
(4) Select ºColor Bar Checkº.
(5) Make sure that each color name is corresponding
to each color on the bar.
HINT:
Select Black, Red, Green, Blue, White and Stripe to display se-
lected colors and stripe on the entire screen.
(6) Compare the color with the Color Bar Check, and
make sure that the color is the same.
(c) Display Remote Commander Check
(1) Start the Diagnosis system (See page DI±2097).
(2) Select ºMENUº.
(3) Select ºDisplay Checkº.
(4) Select ºRemote Commanderº.
(5) Press each switch and make sure that it corre-
sponds to the display on the screen.

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
±
±

DI±2088
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2282 Author: Date:
2005 SEQUOIA (RM1146U) Only sound quality input from the external device is poor or no
sound can be heard.
1. Power source circuit (multi±display controller sub±assy)
2. Power source circuit (television display assy)
3. Sound signal circuit (multi±display controller sub±assy ±
VTR terminal)
4. VTR terminal
5. Multi±display controller sub±assyDI±2110
DI±2107
DI±2131
±
±
The operation the external device cannot be performed
1. Power source circuit (multi±display controller sub±assy)
2. Power source circuit (television display assy)
3. VTR terminal set signal circuit
4. VTR terminal
5. Multi±display controller sub±assyDI±2110
DI±2107
DI±2155
±
±
RSE SYSTEM
SymptomSuspect AreaSee page
Quality of sound from wireless headphone is poor or no sound
can be heard (all sound).
1. Power source circuit (multi±display controller sub±assy)
2. Power source circuit (television display assy)
3. Sound signal circuit (multi±display controller sub±assy ±
television display assy)
4. Mute signal circuit (radio receiver assy ± multi±display
controller sub±assy)
5. Mute signal circuit (disc player controller ± multi±display
controller sub±assy)
6. Multi±display controller sub±assy
7. Television display assyDI±2110
DI±2107
DI±2135
DI±2147
DI±2153
±
±
Quality of sound from headphone connected to headphone termi-
nal is poor or no sound can be heard (all sound).
1. Power source circuit (multi±display controller sub±assy)
2. Power source circuit (television display assy)
3. Sound signal circuit (multi±display controller sub±assy ±
headphone terminal)
4. Mute signal circuit
5. Multi±display controller sub±assy
6. Television display assyDI±2110
DI±2107
DI±2133
DI±2147
±
±
Quality of sound from wireless headphone is poor or no sound
can be heard (DVD sound only).
1. Power source circuit (disc player controller)
2. Sound signal circuit (multi±display controller sub±assy ±
disc player controller)
3. Disc player controller
4. Multi±display controller sub±assyDI±2112
DI±2137
±
±
Quality of sound from headphone connected is poor or no sound
can be heard (DVD sound only).
1. Power source circuit (disc player controller)
2. Sound signal circuit (multi±display controller sub±assy ±
disc player controller)
3. Disc player controller
4. Multi±display controller sub±assyDI±2112
DI±2137
±
±

± 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

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.