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Toyota Sequoia (2005). Manual - part 546

DID9T–01

–

DIAGNOSTICS

AUDIO SYSTEM

DI–1979

2173

DIAGNOSTIC TROUBLE CODE CHART

Terms

Meaning

Physical address

Three–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 address

Two–digit code (shown in hexadecimal) which is given to each function comprising

the inner system of the AVC–LAN.

HINT:
Titles for each unit are stated in the following order: parts name (physical address) and [Name indicated on
the DTC display]
1.

Radio receiver assy (physical address: 190) [AUDIO H/U]

(a)

Logical address: 01 (Communication control)

DTC

Name

Diagnosis

Verification

See page

Absence of Master

Component in which this code is recorded was
disconnected from system or master component
with ignition switch in ACC or ON.

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 receiver

assy – Stereo component ampli-

fier assy).

5. AVC–LAN (Radio receiver assy

– Rear seat audio controller). *6

6. AVC–LAN (Radio receiver 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. *7

–

No Response to Connection

Check

Component shown by sub code is or was discon-
nected from 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 receiver

assy – Stereo component ampli-

fier assy).

5. AVC–LAN (Radio receiver assy

– Rear seat audio controller). *6

6. AVC–LAN (Radio receiver 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. *7

–

DI–1980

–

DIAGNOSTICS

AUDIO SYSTEM

2174

Last Mode Error

Audio or visual component operated before en-
gine stop is or was disconnected with ignition
switch in ACC or ON.

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 receiver

assy – Stereo component ampli-

fier assy).

5. AVC–LAN (Radio receiver assy

– Rear seat audio controller). *6

6. AVC–LAN (Radio receiver 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. *7

–

No Response to ON/OFF

Instruction

No response is identified when changing mode
(audio and visual mode change).
Sound and picture does not change by button op-
eration.

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 receiver

assy – Stereo component ampli-

fier assy).

5. AVC–LAN (Radio receiver assy

– Rear seat audio controller). *6

6. AVC–LAN (Radio receiver 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. *7

–

–

DIAGNOSTICS

AUDIO SYSTEM

DI–1981

2175

Mode Status Error

Dual alarm is detected.

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 receiver

assy – Stereo component ampli-

fier assy).

5. AVC–LAN (Radio receiver assy

– Rear seat audio controller). *6

6. AVC–LAN (Radio receiver 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. *7

–

Transmission Error

Transmission to component shown by auxiliary
code has been failed.
(Detecting this DTC does not necessarily mean
actual failure.)

1. Power source circuit (Rear seat

audio controller). *6

2. Power source circuit (Multi–dis-

play controller sub–assy) *7

3. AVC–LAN circuit (Radio receiver

assy – Stereo component ampli-

fier assy).

4. AVC–LAN (Radio receiver assy

– Rear seat audio controller). *6

5. AVC–LAN (Radio receiver assy

– Multi–display controller sub–

assy). *7

6. Replace stereo component am-

plifier assy.

7. Replace rear seat audio control-

ler. *6

8. Replace multi–display controller

sub–assy. *7

–

Master Reset (Momentary Inter-

ruption)

After the engine was started, master component
was disconnected from system.

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 receiver

assy – Stereo component ampli-

fier assy).

5. AVC–LAN (Radio receiver assy

– Rear seat audio controller). *6

6. AVC–LAN (Radio receiver 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. *7

–

DI–1982

–

DIAGNOSTICS

AUDIO SYSTEM

2176

Slave Reset (Momentary Inter-

ruption)

After the engine was started, component shown
by sub code was disconnected from system.

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 receiver

assy – Stereo component ampli-

fier assy).

5. AVC–LAN (Radio receiver assy

– Rear seat audio controller). *6

6. AVC–LAN (Radio receiver 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. *7

–

Master Error

Due to defective cognition of component with a
display, master function is switched to audio
equipment.

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 receiver

assy – Stereo component ampli-

fier assy).

5. AVC–LAN (Radio receiver assy

– Rear seat audio controller). *6

6. AVC–LAN (Radio receiver 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. *7

–

HINT:

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

*2: If the power connector is disconnected after the engine starts, this code is recorded after 180 se-
conds.

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

*4: 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.

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

*6: w/ Rear seat audio system only.

*7: w/ Rear seat entertainment system only.

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