Toyota Sequoia (2005). Manual - part 563

DIDAG–01

I28272

AVC–LAN:

Stereo Component 
Amplifier Assy

 Radio Receiver Assy 

   (w/o Navigation) 

 Radio and Navigation Assy 

   (w/ Navigation)

Rear Seat Audio Controller

: AVC LAN

–

DIAGNOSTICS

REAR SEAT AUDIO SYSTEM

DI–2047

2241

SYSTEM DESCRIPTION

1.

OUTLINE

(a)

Rear Seat Audio (RSA) system, which consists of a rear seat audio controller and a remote controller
(switch assy), enables the rear seat occupants to use headphones to listen simultaneously to a differ-
ent audio mode than the one that is selected in the front audio head unit.

2.

COMMUNICATION SYSTEM

DIDAI–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

END

Items inside

are titles of pages in this manual,

with the page number in the bottom portion. See
the pages for detailed explanations.

P. 

DI–2053

P. 

DI–2058

 – 

DI–2076

P. 

DI–1979

, 

DI–2203

1. Customer problem analysis

P. 

DI–2049

2. Problem Symptoms Confirmation

Symptom does 
not occur

Malfunction 
code

6. Problem symptoms table

P. 

DI–2050

8. Identification of problem

Symptom occurs

Go to step 4

3. Symptom Simulation

P. 

IN–24

9. Repair or replace

Normal system
code

DI–2048

–

DIAGNOSTICS

REAR SEAT AUDIO SYSTEM

2242

HOW TO PROCEED WITH TROUBLESHOOTING

DIDAJ–01

RSA SYSTEM Check Sheet

Inspector’s name:

Customer’s Name

VIN

Production Date

Licence Plate No.

Odometer Reading

             /               /

km
mile

Frequency of Problem Occurrence

                              /                                /

 Constant      

 Intermittent (      Times a day)

Brought–in Date

Problem

Symptom

 Headphone

DTC

Check

Parts name

DTC (1st time)

DTC (2nd time)

 Switch Assy

 Headphone Terminal

 Rear Seat Audio Controller Assy

–

DIAGNOSTICS

REAR SEAT AUDIO SYSTEM

DI–2049

2243

CUSTOMER PROBLEM ANALYSIS CHECK

DIDAK–01

DI–2050

–

DIAGNOSTICS

REAR SEAT AUDIO SYSTEM

2244

PROBLEM SYMPTOMS TABLE

RSA SYSTEM

Symptom

Suspected Areas

See page

RSA system cannot be powered.

1. Power source circuit (rear seat controller assy)

DI–2058

Quality of sound from wireless headphone is poor or no sound

can be heard.

1. Power source circuit (rear seat controller assy)

2. Mute signal circuit (to rear seat audio controller)

3. Sound signal circuit (to rear seat audio controller)

4. Rear seat audio controller

DI–2058

DI–2066

DI–2070

–

Quality of sound from headphone connected to headphone termi-

nal is poor or no sound can be heard.

1. Power source circuit (rear seat controller assy)

2. Mute signal circuit (to rear seat audio controller)

3. Sound signal circuit (Rear seat audio controller – head-

phone terminal)

4. Sound signal circuit (Radio receiver assy / radio and

navigation assy – rear seat audio controller)

DI–2058

DI–2066

DI–2073

DI–2070

REMOTE CONTROL

Symptom

Suspected Areas

See page

A remote control system does not operate.

1. Power source circuit (rear seat controller assy)

2. A remote control system does not operate

3. AVC–LAN circuit

DI–2058

DI–2076

DI–2061