TOYOTA SEQUOIA 2001 Service Repair Manual

± DIAGNOSTICSNAVIGATION SYSTEM
DI±2209
2403 Author: Date:
2005 SEQUOIA (RM1146U)E2
ON/OFF indication parameter
errorWhen the command for ON/OFF control from the
master device has a problem.Replace radio and navigation assy.±
E3
*1Registration demand transmis-
sion
When the registration demand command from the
slave device is output, or when the registration
demand command is output by receiving connec-
tion confirmation command from the sub master
device.
NOTE: This DTC may not be directly related to
the problem.
±±
E4
*1Multiple frame incomplete
When the multiple frame transmission ends in-
complete.
NOTE: This DTC may not be directly related to
the problem.
±±
HINT:

*1: This code may be recorded depending on the battery condition or engine start voltage even if no
failure is detected.

*2: This code may be stored if the ignition key is turned to the START position again with the engine
running.

*3: This code may be stored if the ignition key is held in the START position for 1 minute or more before
returning to the ON position.

*4: If the device is reported as not existing during verification, check the power source circuit and AVC±
LAN circuit for the device.

*5: w/ Rear seat audio system only.

*6: w/ Rear seat entertainment system only.
3. Multi±display controller sub±assy (Physical address: 1F6) [RSE ECU, MAIN]
(a) Logical address: 01 (Communication control)
DTCNameDiagnosisVerificationSee page
21ROM ErrorAbnormal condition of ROM is detected.Replace multi±display controller
sub±assy.±
22ROM ErrorAbnormal condition of RAM is detected.Replace multi±display controller
sub±assy.±
D1
*1
*4Registered component discon-
nected
AVC±LAN transmitting abnor-
malitiesComponent shown by sub±code is or was discon-
nected from system with ignition switch in ACC or
ON.
Communication with component shown by sub±
code is not ensured when engine is started.
1. Power source circuit (Multi±dis-
play controller sub±assy).
2. AVC±LAN (Radio and navigation
assy ± Multi±display controller
sub±assy).
3. Replace Multi±display controller
sub±assy.DI±2110
DI±2139
±
D7
*2AVC±LAN 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 was disconnected.
1. Power source circuit (radio and
navigation assy).
2. Power source circuit (Multi±dis-
play controller sub±assy).
3. AVC±LAN (Radio and navigation
assy ± Multi±display controller
sub±assy).
4. Replace Multi±display controller
sub±assy.DI±2256
DI±2110
DI±2139
±
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,
multi±display controller was disconnected.
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
±

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
±

± DIAGNOSTICSNAVIGATION SYSTEM
DI±2211
2405 Author: Date:
2005 SEQUOIA (RM1146U)D7
*2
Connection Check Error
Component in which this code is recorded has
been disconnected from system after engine start.
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
±
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 ± Rear seat audio control-
ler).
3. Replace Rear seat audio control-
ler.DI±2256
DI±2061
±
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 ± Rear seat audio control-
ler).
3. Replace Rear seat audio control-
ler.DI±2256
DI±2061
±
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.
±
D8
*2No Response To Connection
CheckComponent shown by sub±code is or had been
disconnected from system after engine start.
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
±
D9
*1Last Mode Error
Component operated (sound and/or image was
provided) before engine stop is or was discon-
nected with ignition switch in ACC or ON.
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
±

DI±2212
± DIAGNOSTICSNAVIGATION SYSTEM
2406 Author: Date:
2005 SEQUOIA (RM1146U)DA
No Response to ON/OFF
Instruction
No response is identified when changing mode
(audio and visual mode change).
Detected when sound and picture does not
change by button operation
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
±
DB
*1Mode Status ErrorDual alarm is detected.
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
±
DE
*4Slave Reset (Momentary Inter-
ruption)After engine start, slave component has been dis-
connected.
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
±
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: When 210 sec. has passed after pulling out the power supply connector of the master component
with the ignition switch in ACC or ON, this code is stored.

*3: This code may be stored when the engine key is turned 1 min. again after engine start.

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

DIDC8±01
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2213
2407 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
Pressing power switch does not turn on system
INSPECTION PROCEDURE
1 Check cabin.
CHECK:
Check that conditions in the cabin are not likely to cause condensation.
HINT:
This problem occurs when the cabin is humid and the temperature rapidly changes. This condition may pro-
duce condensation, resulting in a short circuit.
OK:
Condensation is not likely.
NG Dry cabin and recheck conditions.
OK
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2184).

DI±2214
± DIAGNOSTICSNAVIGATION SYSTEM
2408 Author: Date:
2005 SEQUOIA (RM1146U)
Black screen (No image appears on navigation and audio screen)
INSPECTION PROCEDURE
1 Check display setting.
CHECK:
Check that the display is not in ºScreen OFFº mode.
OK:
The display setting is not in ºScreen OFFº mode.
NG Change screen to ºscreen onº mode.
OK
2 Check image quality setting.
CHECK:
Check if screen color quality can be set.
OK:
Screen color quality can be set.
OK Press panel switch ºdisplayº and set screen
color quality to normal.
NG
DIDC9±01

± DIAGNOSTICSNAVIGATION SYSTEM
DI±2215
2409 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check cabin.
CHECK:
Check if condensation is likely to occur, or the temperature is high or low (extremely cold) in the cabin.
HINT:
This problem occurs when the cabin is humid and the temperature rapidly changes. This condition may pro-
duce condensation, resulting in a short circuit.
OK:
The above conditions are not observed.
NG Set cabin temperature to appropriate degrees
(20 to 30
C) (68 to 86
F).
OK
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2184).

PKB OFF
REV OFFSPEED 49km/h
TAIL OFF
I28975
DI±2216
± DIAGNOSTICSNAVIGATION SYSTEM
2410 Author: Date:
2005 SEQUOIA (RM1146U)
Illumination for panel switch does not come on with tail switch on
INSPECTION PROCEDURE
1 Display check mode (Vehicle signal check mode).
PREPARATION:
Enter the ºDisplay Checkº mode (Vehicle Signal Check Mode)
(See page DI±2176).
CHECK:
Turn the light control switch to the TAIL, HEAD or OFF position.
OK:
Light Control SwitchDisplay
TAIL or HEADON
OFFOFF
HINT:
The display is updated once per second. As a result, it is normal
for the display to lag behind the actual change in the switch.
OK Replace radio and navigation assy.
NG
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2184).
DIDCA±01

I28248
PKB OFF
REV OFFSPEED 49km/h
TAIL OFF
I28975
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2217
2411 Author: Date:
2005 SEQUOIA (RM1146U)
Display does not dim (Night screen) with tail switch on
INSPECTION PROCEDURE
1 Check image quality setting.
PREPARATION:
(a) Enter the display adjustment screen by pressing the ºDIS-
PLAYº switch.
(b) Turn the light control switch to the TAIL position.
CHECK:
Check if ºDAY MODEº on the display adjustment is ON.
OK:
ºDAY MODEº is ON.
OK Turn forced ºDAY MODEº setting off.
NG
2 Display check mode (Vehicle signal check mode).
PREPARATION:
Enter the ºDisplay Checkº mode (Vehicle Signal Check Mode)
(See page DI±2176).
CHECK:
Turn the light control switch to the TAIL, HEAD or OFF position.
OK:
Light Control SwitchDisplay
TAIL or HEADON
OFFOFF
HINT:
The display is updated once per second. As a result, it is normal
for the display to lag behind the actual change in the switch.
OK Replace radio and navigation assy.
NG
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2184).
DIDCC±01

I28249
DI±2218
± DIAGNOSTICSNAVIGATION SYSTEM
2412 Author: Date:
2005 SEQUOIA (RM1146U)
Panel switch does not function
INSPECTION PROCEDURE
1 Check panel switch.
CHECK:
Check for foreign matter around the switch that might prevent operation.
OK:
No foreign matter is found.
NG Remove any foreign matter found.
OK
2 Display check mode (Panel switch check mode).
PREPARATION:
Enter the ºDisplay Checkº mode (Panel Switch Check Mode)
(See page DI±2176).
CHECK:
Operate the abnormal switch and check if the switch name and
status are correctly displayed.
OK:
The switch name and status are correctly displayed
as operated.
OK Replace radio and navigation assy.
NG
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2184).
DIDCD±01