2001 TOYOTA SEQUOIA ESP

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.

DIDBX±01
I28218
I28223
*1
*2 *3
I28224
DI±2178
± DIAGNOSTICSNAVIGATION SYSTEM
2372 Author: Date:
2005 SEQUOIA (RM1146U)
DISPLAY CHECK MODE (Panel Switch Check)
HINT:

This mode checks the panel switch operation response on the radio and navigation assy.

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.
1. Enter diagnostic mode (See page DI±2191).
2. Select ºDisplay Checkº from the ºDiagnosis MENUº
screen.
3. Select ºPanel Switch Checkº from the ºDisplay
Checkº screen.
4. Operate each switch and check that the switch name
and condition are correctly displayed.
HINT:

Pressing the ºDISPLAYº switch for 3 seconds will exit the
diagnostic mode.

ºOPENº and ºTILTº switches are not displayed. To test
these switches, they must be operated.
DisplayContents
Push switch name/*1
Name of the pressed switch is displayed.

If more than one switch is pressed, ºMULTIPLEº is displayed.
Rotary switch name/*2Name of the rotary switch is displayed.
Rotary switch direction/*3Direction of the rotary switch is rotated.

I28237
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2193
2387 Author: Date:
2005 SEQUOIA (RM1146U)
Check Result/*2
HINT:
Result codes for all devices are displayed.
ResultMeaningAction
OKThe device did not respond with a DTC (excluding commu-
nication DTCs from the AVC±LAN).±
EXCHThe device responds with a ºreplaceº±type DTC.Look up the DTC in ºUnit Check Modeº and replace the de-
vice.
CHEKThe device responds with a ºcheckº±type DTC.Look up the DTC in Unit Check Modeº.
NCONThe device was previously present, but does not respond in
diagnostic mode.1. Check power supply wire harness of the device.
2. Check the AVC±LAN of the device.
OldThe device responds with an ºoldº±type DTC.Look up the DTC in ºUnit Check Modeº.
NRESThe device responds in diagnostic mode, but gives no DTC
information.1. Check power supply wire harness of the device.
2. Check the AVC±LAN of the device.
Code Clear/*3
Present DTCs are cleared.
Memory Clear/*4
Present and past DTCs and registered connected device names are cleared.
(1) Diagnosis MENU Screen
HINT:
Each item is grayed out or not displayed based on the device settings.

I28238
*1
*2
*3 *5
*4
*6
I28239
*1
DI±2194
± DIAGNOSTICSNAVIGATION SYSTEM
2388 Author: Date:
2005 SEQUOIA (RM1146U)
(2) Unit Check Mode Screen
Screen Description
DisplayContents
Device name/*1Target device
Segment/*2Target device logical address
DTC/*3DTC (Diagnostic Trouble Code)
Timestamp/*4The time and date of past DTCs are displayed (The year is displayed in 2 digit
format.).
Present Code/*5The DTC output at the service check is displayed.
Past Code/*6Diagnostic memory results and recorded DTCs are displayed.
(3) LAN Monitor (Original) Screen
Check Result/*1
HINT:
Check results of all the devices are displayed.
ResultMeaningAction
No Err
(OK)There are no communication DTCs.±
CHEKThe device responds with a ºcheckº±type DTC.Look up the DTC in ºUnit Check Modeº.
NCONThe device was previously present, but does not respond in
diagnostic mode.1. Check power supply wire harness of the device.
2. Check the AVC±LAN of the device.
OldThe device responded with an old±type DTC.Look up the DTC in ºUnit Check Modeº.
NRESDevice responds in diagnostic mode, but gives no DTC
information.1. Check power supply wire harness of the device.
2. Check the AVC±LAN of the device.

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
±
±
±

± DIAGNOSTICSNAVIGATION SYSTEM
DI±2205
2399 Author: Date:
2005 SEQUOIA (RM1146U) DA
*5
No response against ON/OFF
command
No response is identified when changing mode
(audio and visual mode change). Detected when
sound and image do not change by switch opera-
tion.
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
±
±
±
DB
*1
*5
Mode status errorThis code detects a dual alarm.
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
±
±
±

± 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.